Release v1.2.0

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -1,6 +1,9 @@
 name: ci
 on:
+  # Branches only: a release tag points at a commit CI already checked on
+  # main, and release.yml builds it.
   push:
+    branches: ['**']
   pull_request:
 
 jobs:
@@ -55,5 +58,13 @@ jobs:
         run: powershell -NoProfile -ExecutionPolicy Bypass -File tool/setup_flutter_windows.ps1
       - name: Updater tests
         shell: powershell
-        working-directory: apps/desktop
-        run: flutter test test/updater_test.dart
+        working-directory: packages/core
+        run: |
+          dart pub get
+          if ($LASTEXITCODE) { exit 1 }
+          dart test test/updater_test.dart
+      # The release build, without publishing: a broken Windows build shows
+      # here, not only on a tag.
+      - name: Windows build
+        shell: powershell
+        run: powershell -NoProfile -ExecutionPolicy Bypass -File tool/package_windows.ps1

.gitignore

@@ -17,6 +17,7 @@ coverage/
 # Build artifacts that should never be committed
 *.tar.gz
 *.zip
+/dist/
 app.*.symbols
 app.*.map.json
 

README.md

@@ -1,4 +1,8 @@
-# watch-together
+<p align="center">
+  <img src="apps/desktop/assets/icon/icon_256.png" width="128" height="128" alt="Starsync icon">
+</p>
+
+<h1 align="center">Starsync</h1>
 
 Watch a video with friends, in sync, with the quality of a real mpv player.
 Pick from your Jellyfin library, paste any direct video link, or pick a file on your own disk;
@@ -22,7 +26,8 @@ How it fits together: [docs/HOW-IT-WORKS.md](docs/HOW-IT-WORKS.md).
 From the Releases page of this repo:
 
 - Linux: `watch-together-<version>-linux-x64.tar.gz`. Extract, run
-  `watch_together`. Needs mpv's library installed (`mpv` or `libmpv2`).
+  `watch_together`. On start it adds itself to your app launcher (and its
+  icon), so the window shows its own icon on Wayland. Needs mpv's library installed (`mpv` or `libmpv2`).
 - Windows: `watch-together-<version>-windows-x64.zip`. Extract, run
   `watch_together.exe`. mpv is bundled. New and not yet tried on a real
   Windows desktop; reports welcome.
@@ -31,48 +36,88 @@ Update from the app: when a newer version exists, an update indicator
 appears in the strip at the top of the window and opens the update card. "Update and restart" downloads,
 verifies, applies in place and restarts; the install folder must be writable
 by you. Settings has Check now and an auto-check toggle. From a terminal:
-`watch_together --upgrade`, or the shipped `update.sh` / `update.bat`. A
+`./watch-together-server --upgrade` (no display needed, so it works on a
+server box too), `watch_together --upgrade`, or the shipped `update.sh` /
+`update.bat` (which run the first). Each updates the whole folder, app and
+server; restart whichever is running to use the new version. A
 release with a newer protocol is a required update: everyone on a server
 must run the same protocol version, and a mismatch is refused with a message
 telling you to update.
 
+## Getting started
+
+Three ways in, all at the top of the Library when you are not in a server.
+None of them needs Jellyfin or an account.
+
+- **Join a friend** (most people): your friend sends you an address and,
+  maybe, a password. See [Join](#join).
+- **Host**: you have the video and friends watch it with you. See
+  [Host from the app](#host-from-the-app).
+- **Watch solo**: just play something from the Library. It plays for you
+  alone, with everything a server has (Jellyfin progress, next episode,
+  skip buttons); nothing is reachable from outside this computer. Invite
+  friends in the strip turns it into a hosted server (the Host card's port
+  and password) and the video carries on from where it was; Stop ends it.
+
 ## The window
 
 One window. Along the top, the strip: your avatar (click it for your
 profile: name, picture with a crop editor, colour, and links to the
 settings), the Library / Schedule / Settings tabs, and the party. Offline
-the party side has Join and Host; in a server it shows everyone's avatar
+the party side has Join a friend and Host; watching solo it says Solo,
+with Invite friends and Stop; in a server it shows everyone's avatar
 with a ring for their state (green ready, amber buffering, grey not ready,
-dimmed reconnecting; a crown on whoever hosts, a tower on whoever
-passes the video on). Click the avatars for the member list (force ready,
-kick, "Copy invite address"; when you host it lists this computer's
+dimmed reconnecting, dimmed with a moon sitting out; a crown on whoever
+hosts, a tower on whoever passes the video on). Click the avatars for the
+member list (force ready, Nudge, Sit out, "Copy invite address"; when you host it lists this computer's
 network addresses with the port, and friends outside your network need
 that port forwarded or a server they can all reach, like a VPS). Beside them the server and "ready n/m", the chat button with unread
 count, and Leave. Empty strip space drags the window.
 
 The player fills the window under the strip. Pick a tab and it shrinks to
 a mini player in a corner: drag it anywhere and it snaps to the nearest
-corner; double-click or ⤢ makes it big again, × stops watching (you stay in
-the server, muted) and the strip's screen button brings it back. F or
+corner; double-click or ⤢ makes it big again, × sits you out (below) and
+× again closes it; the strip's screen button brings it back. F or
 double-click on the picture goes fullscreen (the strip hides, the party
 shows in a corner while paused, the window buttons sit in the player's top
 bar while its controls are up), Esc leaves it. The controls show the
-show's cover, title and episode top left (guests get the cover too); before
+show's cover, title and episode top left (a web video: its thumbnail and
+name; guests get the art too; right-click to copy the title, or the link
+when you have it, or open it in the browser or Jellyfin); before
 a video first plays, its banner fills the picture until playback starts.
-One pill above the controls says what playback waits for ("Press Space
+One pill bottom centre, just above the controls, says what playback waits for ("Press Space
 when you're ready", "Waiting for Bob and Mika · 2/3 ready", "Bob is
 loading…") or what went wrong, with Retry or Cancel when it helps. Chat and activity open in a panel on the right (chat button or
-Tab); joins, leaves, chat and other news also pop up bottom left with the
-person's avatar.
+Tab), ready to type; it shows messages (select text to copy it, or
+right-click for Copy message and, with a link in it, Copy link / Open in
+browser), and its "Activity" toggle adds
+joins, ready, seeks and the like between them. Joins, leaves, chat and
+other news also pop up bottom left with the person's avatar; click a message to open the chat
+(Settings → Notifications → Chat messages: Only when paused by default,
+or All, or Off; messages always reach the chat). Unread chat shows as a count on the chat
+buttons and, in fullscreen with the controls hidden and the video paused,
+as a small chip top right.
 
 Your name and picture change for everyone in the server right away; the
 colour is yours only.
 
+**Sitting out.** Step away without leaving: Sit out (your profile, your
+row in the member list, or × on the mini player) unloads the video on your
+end, and nobody waits for you any more; you stay in chat. Anyone can sit
+anyone out, the host too ("Alice sat you out" tells you who). The player
+then shows the cover, title and where the others are; Join back (or Space)
+loads the video there and readies you. Settings → Party & network → "When idle,
+sit out instead of just unready" does it after 10 idle minutes.
+
+**Nudge.** Nudge in the member list pokes someone, sitting out or not:
+only they hear it (a sound, a pop-up, and the taskbar entry asks for
+attention when the window is in the background).
+
 ## Host from the app
 
 Host in the strip: set a port and an optional password (blank = anyone can
 join), then Host. The app starts a server inside itself and joins it; you
-are the host and nobody can kick you. Nothing is up yet: pick what to
+are the host (the crown). Nothing is up yet: pick what to
 watch in the Library tab (below) and put it up. Leaving or
 closing the app stops the server. Friends need to reach your machine: open
 the TCP port on your router (or use a LAN or VPN address). Friends open
@@ -83,10 +128,13 @@ disk. Nothing is uploaded or stored anywhere.
 
 ## Library
 
-What to watch, from three sources (the switch at the top; Ctrl+V outside
-a field pastes a link into Link):
+What to watch, from three sources (the switch at the top). Drop a video,
+a folder or a link anywhere on the window, or press Ctrl+V outside a
+text field, and a small card asks how to open it (put it up, add it to
+Up next, add the folder to Files, or fill Link).
 
-- **Jellyfin**: your linked servers (see below). Library chips beside the
+- **Jellyfin**: your linked servers (see below); with none linked it
+  points to Files and Link and offers Jellyfin as optional. Library chips beside the
   switch, then one **Continue** row (what you were watching and what comes
   next, one card per series, the one you watched most recently first;
   series not touched for two months drop out) and **Latest in** each
@@ -98,15 +146,75 @@ a field pastes a link into Link):
   details open on the right with "Put it up · S1E3", mark watched /
   unwatched, remove from Continue and the episode list (click an episode
   to choose it). Double-click a card or an episode to put it up at once.
-- **Link**: paste an http(s) link. The preview shows what it is (title and
-  thumbnail for YouTube, else the file name); in a server, pick how the
+  Right-click a card or an episode to copy its title or open it in
+  Jellyfin's web page (the details panel has that button too).
+- **Link**: paste an http(s) link: a video file, or a web page with a
+  video (YouTube, X, and whatever else yt-dlp knows). The preview shows
+  what it is (a page's title, uploader, length and thumbnail, else the
+  file name); in a server, pick how the
   others get it (everyone fetches it, the server fetches it, or through
-  you). Your last 12 links are listed under it.
-- **Files**: video folders you add on this computer, grouped by series,
-  or any file through Browse. The others stream it from you.
+  you). Your last 12 links are listed under it (right-click one to copy
+  or open it). A link seen before shows its preview at once, without
+  asking the site again. A link that does not
+  open here (needs cookies, 403, 404, not a video) says why and goes up
+  only with "Put it up anyway"; in the player, whoever cannot play it is
+  named ("Bob can't play this: Not allowed (403)") and nobody waits for them.
+- **Files**: video folders you add on this computer, grouped by series
+  (click a series to list its episodes), or any file through Browse. The others stream it from you.
 
-Put it up and the player opens. Offline the library browses but nothing
-goes up until you join or host ("Join or host to watch together").
+Put it up and the player opens. Not in a server, the buttons say Play
+and it plays for you alone ([Watch solo](#getting-started)).
+
+### Up next (the queue)
+
+In a server (solo too), anything can wait its turn instead of going up
+now: **Add to queue** on the Link page (in the way you picked), or
+right-click a Jellyfin card or episode, a video in Files, a recent link
+or an episode on the Schedule for **Add to queue** / **Play next**; the
+Jellyfin details panel has a queue button (right-click it to play next),
+and the card for a dropped or pasted video or link has both. A link is
+checked first, like Put it up. Every app keeps the next item ready,
+its first seconds already loaded, so skipping to it starts at once.
+For a link passed on, a member's file or a link the server fetches,
+the server starts getting the next item while the current one plays
+(from the app of whoever added it, or by fetching the link itself), so
+everyone has its start before it goes up; whoever added it keeps the
+app open for that. Everyone shares one Up next and anyone can change it; what
+you added stays when you leave.
+
+In the player, Up next sits in the top bar next to the chat button: the
+next item's picture and title (or the next episode's). Rest the mouse on
+it for a larger preview (who added it, its length, whether it is ready
+to start); ⏭ plays it now, a click opens the queue: drag rows to reorder, hover a
+row to play it now (▶) or remove it (×), right-click it for more (copy its
+title or link, open it in the browser or in Jellyfin). To add, press
+Ctrl+V with the queue open (a copied link or video file goes in at once,
+its title and picture showing while it is checked), type one after
+**+ Add link**, or drop a link or a video on it. When a video ends, a card shows
+what is up next with a 10 s countdown (Cancel stops it on your screen)
+and it plays; `>` or Shift+N plays it at once. Under the queue,
+**Continues with** shows the next episodes of the Jellyfin series
+playing (greyed: they play only once Up next is empty); **+** adds one,
+**Clear** drops them for this episode.
+
+A link you pass on ("through me") or a file of yours can only be played
+by your app: if you left when its turn comes, it is skipped ("Skipped …:
+Foxyz left"). A Jellyfin item needs someone with an account on that
+server. Up next is kept by the server while it runs; restarting the
+server empties it.
+
+## Schedule
+
+The week's airing anime, one column per day (AniList), each episode
+marked with what the Jellyfin server has of it when AnimeFlow is
+connected (Settings, Jellyfin & integrations): **on Jellyfin** (Put it
+up, right-click to queue), **downloading**, **waiting for release**
+(aired in Japan, AnimeFlow downloads it by itself once a release
+appears; with when AnimeFlow last searched, or **release rejected** when
+it found releases it won't take, the reason on hover), **failed**, **not monitored** (Request asks AnimeFlow for it),
+or the time left until it airs. A show AnimeFlow does not follow can be asked for with **Request
+series**. Episodes you already watched on Jellyfin carry a check on the
+cover; one you started shows how far you got.
 
 ## Dedicated server
 
@@ -125,14 +233,37 @@ then everyone (you included) uses Join.
 | `--name` | `server` | name reported by `/health` |
 | `--media` | none | local file to serve as the starting video |
 | `--advertise-host` | none | host put in file URLs instead of the one each viewer dialled |
-| `--config` | none | YAML or JSON file with the same settings (`port`, `secret`, `name`, `mediaPath`, `advertiseHost`); replaces the flags |
+| `--[no-]yt-dlp` | on | read web pages (YouTube, X, …) with yt-dlp when the server fetches a link |
+| `--yt-dlp-dir` | next to the binary | writable folder for the server's yt-dlp (systemd: the unit's `StateDirectory`) |
+| `--yt-dlp-cookies` | none | cookies.txt or cookie-extension JSON export for that yt-dlp (sites that refuse guests); copied into the yt-dlp folder at start, removed from it when not given. **An account login**: keep it private, use a throwaway account for YouTube |
+| `--log-dir` | `logs` next to `--config`, else next to the binary (systemd: the unit's `StateDirectory`) | folder for the log files (`server-YYYY-MM-DD.log` and the session log `session-YYYY-MM-DD.log`, kept 7 days; passwords, tokens and cookies left out) |
+| `--config` | none | YAML or JSON file with the same settings (`port`, `secret`, `name`, `mediaPath`, `advertiseHost`, `ytDlp`, `ytDlpDir`, `ytDlpCookies`); replaces the flags |
+| `--upgrade` | | update the install folder to the latest release ([Install and update](#install-and-update)), then exit |
+| `--check-update` | | print whether a newer release exists, then exit |
 
 It prints `READY port=... name=...` once listening and stops cleanly on
-Ctrl+C or SIGTERM. A dedicated server has no host: anyone can kick anyone.
+Ctrl+C or SIGTERM. A dedicated server has no host.
 To run it as a service, unpack the tarball to `/opt/watch-together` and use
 [deploy/watch-together.service](deploy/watch-together.service) (copy it to
 `/etc/systemd/system/`, edit the flags, `systemctl enable --now watch-together`).
 
+Something not playing? Settings → About → **Copy diagnostics** puts the
+app's recent log (passwords, tokens and cookies left out) on the
+clipboard: paste it to whoever helps you, from both sides if you can.
+
+While you are in a server, the app also sends its log to that server, which
+merges everyone's lines and its own into one session log
+(`session-YYYY-MM-DD.log` next to the server's logs; the hosting app keeps
+it in its own logs folder), so a problem can be read afterwards from every
+side. Chat is never logged anywhere, nor passwords, tokens and cookies.
+When something goes wrong, press **Mark a problem** (Ctrl+Shift+B, also in
+the player's ⚙ and Settings → About) and add a few words if you like: a
+marker with your name goes in the session log at that moment. In a server,
+Copy diagnostics can add the session log of the last 6 hours (any member
+may read it). Don't want to share? Settings → About → **Share diagnostics
+with the server** off: your log stays on your machine (the server only
+notes that you don't share; a problem you mark still goes in).
+
 ## Join
 
 Join in the strip. Servers you got into are listed first (up to 6), with
@@ -149,9 +280,9 @@ of help: Profile; Party & network (the Host card's default port and
 password, recent servers with remove); Player (below); Jellyfin &
 integrations (linked Jellyfin servers, below, the AnimeFlow connection:
 "connected as <name>" with what you may do, or why not, and playing the
-next episode automatically); Notifications & sounds (what pops up; there
-is nothing to switch yet); Updates; Keyboard shortcuts (read-only); About
-(the version).
+next episode automatically); Notifications & sounds (what pops up; the sound
+volume and sound set, and every sound with a preview, its own set and a switch); Updates; Keyboard shortcuts (read-only); About
+(the version; resting the mouse on the Settings tab shows it too).
 
 Player settings live in the player: ⚙ at the right end of its controls
 (both designs) opens them, and Settings → Player has the same ones (plus
@@ -162,10 +293,13 @@ hardware decoding (auto, off or custom; the env var `SYNC_RELAY_HWDEC`
 overrides it); in the player also the subtitle and audio track. Every
 change applies right away.
 
-Keys while the player fills the window: Space = ready / unready, Tab =
-chat & activity, Left/Right = seek 10 s, Shift+Right = skip 1:30,
+Anywhere in a server (unless you are typing): Space = ready / unready,
+Tab = chat & activity (Tab never moves between buttons). Anywhere:
+Ctrl+Shift+B = mark a problem in the session log. Keys while the
+player fills the window: Left/Right = seek 10 s, Up/Down = volume, Shift+Right = skip 1:30,
 PgUp/PgDn = previous / next chapter (as in mpv), F = fullscreen, Esc =
-close the chat or fullscreen, else ask to leave, Ctrl+R = reload video,
+close the chat, then fullscreen, then shrink the player to mini; from the
+mini it asks to leave, Ctrl+R = reload video,
 `<` / `>` or Shift+P / Shift+N = previous / next Jellyfin episode,
 Ctrl+1..6 = Anime4K mode A, B, C, A+A, B+B, C+A, Ctrl+0 = shaders off.
 Every seek, skip and chapter jump moves everyone.
@@ -174,27 +308,37 @@ Controls: the seek bar marks chapter starts with a diamond; hovering it
 shows the time and the chapter title. The chapters button lists them
 (current one checked; click to jump). "1:30" skips ahead 1:30. Audio and
 Subtitles buttons (with the track count) list tracks as "Japanese · E-AC3
-2.0 · title"; subtitles have Off.
+2.0 · title"; subtitles have Off. Volume (scroll anywhere on the video,
+hover the speaker, or Up/Down) goes to 150 % like mpv: past the tick at
+100 % the bar turns amber and mpv amplifies; a scroll or key shows the
+volume for a moment. Lists and menus under the mouse scroll as usual.
 
 The uosc player design (⚙ → Player design, Standard by default,
-switches right away): video controls modeled on mpv's uosc theme. A thick
-timeline across the bottom shows the played part, the cached part ahead
-(hatched), chapter starts as diamonds and the time; hovering it shows the
-chapter title and the time there. With the controls hidden it stays as a
-thin line (unless "Progress line when hidden" is off). Above it flat buttons: ≡ menu, Subtitles and Audio (with the
+switches right away): video controls modeled on mpv's uosc theme. A
+translucent timeline across the bottom marks the position with a thin
+line, hatches the part not downloaded yet, shows chapter starts as
+diamonds (click one to jump), the elapsed time left, the time remaining
+right and, while less than a minute is buffered, the buffered seconds
+next to the position; hovering it shows the time there and the chapter
+title. With the controls hidden it stays as a thin line (unless
+"Progress line when hidden" is off). Above it flat buttons: ≡ menu, Subtitles and Audio (with the
 track count), the shader badge (the active Anime4K mode, e.g. "A HQ"),
 ready, chapters, 1:30, previous / next episode, change video, volume, ⚙
-and fullscreen; the title top left, chat and back-to-library top right. Keys and skip buttons work
+and fullscreen; the title top left, Up next, chat and back-to-library top right. Keys and skip buttons work
 the same.
 
-Skipping: during the opening a "Skip OP" button floats in the corner (it
+Skipping: during the opening a "Skip OP" button shows bottom right, just
+above the controls (it
 jumps to the end of the opening), during the ending "Skip ED" (to the end
-of the ending only; what comes after is yours to skip). The opening and
+of the ending only; what comes after is yours to skip). "Skip OP" and
+"Skip 1:30" show for 5 seconds when they come up, then only while the
+controls are up (move the mouse); "Skip ED" and "Next episode" show only
+while the controls are up. The opening and
 ending come from Jellyfin's intro / outro segments when your Jellyfin has
 them (needs a segment plugin, e.g. Intro Skipper), else from chapter names
-(OP, Opening, Intro / ED, Ending, Credits, Outro). Without an opening, on
-anything longer than 20 minutes, "Skip 1:30" floats there during the first
-6 minutes.
+(OP, Opening, Intro / ED, Ending, Credits, Outro). Without an opening or
+any chapters, on anything longer than 20 minutes, "Skip 1:30" floats there
+during the first 6 minutes.
 
 ## Ports
 
@@ -236,11 +380,14 @@ Watching:
   directly with their own sign-in. Jellyfin tracks progress per account:
   your watched state, Continue watching and resume point follow what you
   saw (reported on start, every 10 s, on pause, resume, seek and track
-  change, and when it stops).
+  change, and when it stops). Watched means you actually played most of
+  it (or reached the ending after half), not where you stopped: opening
+  a watched episode to check a moment keeps it watched, and a quick peek
+  leaves no resume point.
 - Friends without an account watch through the server: whoever put the
   item up passes it on automatically, with their own sign-in, which never
   leaves their computer (only the current item, only to people in the
-  session). They show "via host" in the member list (click the avatars). When the app hosts,
+  session). They show "via server" in the member list (click the avatars). When the app hosts,
   or a dedicated server has its own login (`--jellyfin <file>`, see
   [docs/ARCHITECTURE.md](docs/ARCHITECTURE.md), Jellyfin relay), the server
   fetches it itself instead.
@@ -251,7 +398,8 @@ Watching:
 Episodes: the ⏮ / ⏭ buttons next to the controls (or `<` / `>`,
 Shift+P / Shift+N) put up the previous or next episode for everyone. From
 the ending (when it is known, see Skipping above; else in the last two
-minutes) a "Next episode" button floats in the corner. When an
+minutes) a "Next episode" button floats in the corner while the controls
+are up. When an
 episode ends, a card shows what is next with Play next; with "Play the
 next episode automatically" (Settings, on by default) it counts down 10 s
 first, and Cancel stops it on your screen (seeking back stops it for
@@ -270,19 +418,46 @@ current season, else where you left it.
 Anyone can put up a file from their own computer, also on a dedicated
 server: it streams from your computer through the server to everyone (the
 server keeps a few minutes in memory, so seeks and skipping the opening
-are quick). Keep the app open while it plays. For a link you choose how
-the others get it:
-- Everyone fetches it (default): each app plays the link itself.
+are quick). Keep the app open while it plays. A link goes up "Through
+me": your computer opens it and passes it on, so it plays for everyone
+whenever it plays for you (you can't tell ahead which sites want cookies,
+and YouTube may start asking any day). Under "Other ways" there are two more:
+- Everyone fetches it: each app plays the link itself.
 - Server fetches it: the server downloads it once for everyone, for links
   that are slow or blocked for some. The server must be able to reach it,
   and it must have a password (an open server refuses: anyone could make
   it fetch addresses only it can reach).
-- Through me: your computer downloads it and passes it on, for links only
-  you can open.
 
-The last two need a link to a video file (not a page like YouTube) and
-never show the link to anyone. Your upload has to beat the video's
-bitrate: a 25-minute 2 GB episode is about 11 Mbit/s.
+Web pages work in all three: the app and the dedicated server each
+download [yt-dlp](https://github.com/yt-dlp/yt-dlp) by themselves (checked
+against the release's checksums, updated once a day; Settings → Player
+shows its version and has "Update now"), so there is nothing to install.
+Sites that refuse guests (Bilibili answers "HTTP Error 412", YouTube may
+ask to sign in) need cookies: Settings → Player → yt-dlp → Cookies reads
+them from a browser, or from a cookies.txt or a cookie extension's JSON
+export (picked or dropped; every site in it is kept). They stay on this
+computer and are used by its yt-dlp only (your own playback, "through
+me", and a server you host). Cookies log yt-dlp in as you on those
+sites: keep the file private, and for YouTube consider a throwaway
+account (Google may flag accounts used with yt-dlp).
+YouTube works in all three too, and so do pages and links that only
+offer streaming playlists (HLS `.m3u8`, DASH `.mpd`, the HLS of X videos).
+Through me and Server fetches it never show the link to anyone; they can't pass on live
+streams or DRM-protected video (use "Everyone fetches it" for live).
+Your upload has to beat the video's bitrate: a 25-minute 2 GB episode is
+about 11 Mbit/s.
+
+The member list (click the avatars) shows where the video comes from on
+top: who passes it on, or that the server fetches it, everyone plays the
+link, or everyone streams it from Jellyfin, with how many watch through
+the server and, for a relay, how fast it arrives against what the video
+needs (the bar's mark; past it is keeping up). It turns amber when the
+source is too slow or reconnecting, red when it left (the others play
+out what the server already has), and whoever passes it on is told once
+when their upload is too slow. Each member's line says how they get it
+("via server" with their speed, or "direct") after a dot for their
+buffer: green enough to play on, amber low, red empty. A red dot on one
+member while the source keeps up is their own connection.
 
 ## Video quality and shaders
 
@@ -306,7 +481,7 @@ fails to load shows a toast and switches shaders off.
 - "host offline - check address and port": wrong address, or the port is not open.
 - "wrong server password": password mismatch.
 - "host runs a different version": update the app on both sides.
-- Picture frozen but sound fine: Ctrl+R reloads the video; the app also does it automatically.
+- Picture frozen but sound fine: Ctrl+R reloads the video.
 - Everyone waits at "waiting for X": X has not buffered 4 seconds yet or has not pressed Space.
 - Windows: the build is new; if something is off there, say so.
 

apps/desktop/assets/icon/icon.svg

@@ -0,0 +1,9 @@
+<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 256 256">
+<defs><linearGradient id="bg" x1="0" y1="0" x2="1" y2="1"><stop offset="0" stop-color="#2d2547"/><stop offset="1" stop-color="#14111d"/></linearGradient><linearGradient id="t1" gradientUnits="userSpaceOnUse" x1="50.7" y1="148.7" x2="184.6" y2="71.4"><stop offset="0" stop-color="#f0795a" stop-opacity="0"/><stop offset="0.45" stop-color="#f0795a" stop-opacity="0.85"/><stop offset="1" stop-color="#ffc56b"/></linearGradient><linearGradient id="t2" gradientUnits="userSpaceOnUse" x1="205.3" y1="107.3" x2="71.4" y2="184.6"><stop offset="0" stop-color="#ffc56b" stop-opacity="0"/><stop offset="0.45" stop-color="#ffc56b" stop-opacity="0.85"/><stop offset="1" stop-color="#f0795a"/></linearGradient></defs>
+<rect x="8" y="8" width="240" height="240" rx="56" fill="url(#bg)"/>
+<circle cx="128" cy="128" r="80" fill="none" stroke="#ffffff" stroke-opacity="0.10" stroke-width="6"/>
+<path d="M205.27 107.29 A80 80 0 0 1 71.43 184.57" fill="none" stroke="url(#t2)" stroke-width="7" stroke-linecap="butt"/><path d="M50.73 148.71 A80 80 0 0 1 184.57 71.43" fill="none" stroke="url(#t1)" stroke-width="7" stroke-linecap="butt"/>
+<path d="M110 96 L110 160 L162 128 Z" fill="#fff1d6" stroke="#fff1d6" stroke-width="16" stroke-linejoin="round"/>
+<path d="M71.4 161.6 Q74.7 181.3 94.4 184.6 Q74.7 187.8 71.4 207.6 Q68.2 187.8 48.4 184.6 Q68.2 181.3 71.4 161.6 Z" fill="#f0795a"/>
+<path d="M184.6 40.4 Q188.9 67.1 215.6 71.4 Q188.9 75.8 184.6 102.4 Q180.2 75.8 153.6 71.4 Q180.2 67.1 184.6 40.4 Z" fill="#ffc56b"/>
+</svg>

apps/desktop/lib/app.dart

@@ -2,6 +2,8 @@ import 'package:flutter/material.dart';
 
 import 'src/screens/home/ui.dart';
 import 'src/shell/app_shell.dart';
+import 'src/widgets/app_keys.dart';
+import 'src/widgets/app_menu.dart';
 
 class WatchTogetherApp extends StatelessWidget {
   const WatchTogetherApp({super.key});
@@ -10,8 +12,11 @@ class WatchTogetherApp extends StatelessWidget {
   Widget build(BuildContext context) {
     return MaterialApp(
       title: appName,
-      theme: ThemeData.dark(),
-      home: const AppShell(),
+      // Material's own menus (the player's track menus, sort) wear the
+      // app menu's surface.
+      theme: AppMenuStyle.theme(ThemeData.dark()),
+      shortcuts: appShortcuts,
+      home: const AppKeys(child: AppShell()),
     );
   }
 }

apps/desktop/lib/main.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:io';
 
 import 'package:flutter/material.dart';
@@ -7,10 +8,14 @@ import 'package:sync_relay_core/core.dart';
 import 'package:window_manager/window_manager.dart';
 
 import 'app.dart';
+import 'src/playback/yt_dlp_app.dart';
+import 'src/platform/app_log.dart';
+import 'src/platform/desktop_entry.dart';
+import 'src/platform/window_memory.dart';
 import 'src/screens/home/ui.dart';
 import 'src/state/session_state.dart';
 import 'src/state/settings.dart';
-import 'src/update/updater.dart';
+import 'src/update/update_controller.dart' show launchArgs;
 
 Future<void> main(List<String> args) async {
   launchArgs = List.unmodifiable(args);
@@ -37,29 +42,36 @@ Future<void> main(List<String> args) async {
         ),
       );
   WidgetsFlutterBinding.ensureInitialized();
+  await startAppLogging();
+  await Hive.initFlutter();
+  await AppSettings.instance.ensureLoaded();
   await windowManager.ensureInitialized();
   await windowManager.setPreventClose(true);
-  windowManager.addListener(_CloseGuard());
-  const windowOptions = WindowOptions(
-    size: Size(1280, 720),
-    minimumSize: Size(160, 90),
-    center: true,
-    backgroundColor: Color(0xFF000000),
+  final memory = WindowMemory(Hive.isBoxOpen(settingsBoxName) ? Hive.box(settingsBoxName) : null);
+  windowManager.addListener(_CloseGuard(memory));
+  final windowOptions = WindowOptions(
+    size: memory.size,
+    minimumSize: const Size(160, 90),
+    center: !memory.hasPosition,
+    backgroundColor: const Color(0xFF000000),
     titleBarStyle: TitleBarStyle.hidden,
     title: appName,
   );
   windowManager.waitUntilReadyToShow(windowOptions, () async {
+    await memory.restore();
     await windowManager.show();
     await windowManager.focus();
   });
-  await Hive.initFlutter();
-  await AppSettings.instance.ensureLoaded();
   try {
     await SessionState.instance.loadForm();
   } catch (e, st) {
     debugPrint('load connect form failed: $e\n$st');
   }
   MediaKit.ensureInitialized();
+  // yt-dlp for web page links: downloaded on first run, kept current.
+  AppYtDlp.instance.warmUp();
+  // Linux: the launcher entry and icon Wayland needs (release installs).
+  unawaited(installDesktopEntry());
   runApp(const WatchTogetherApp());
 }
 
@@ -67,12 +79,15 @@ Future<void> main(List<String> args) async {
 /// hosted server shuts down), bounded so a hung socket can't keep the
 /// window open.
 class _CloseGuard with WindowListener {
+  final WindowMemory memory;
   bool _closing = false;
+  _CloseGuard(this.memory);
 
   @override
   Future<void> onWindowClose() async {
     if (_closing) return;
     _closing = true;
+    await memory.save();
     try {
       await SessionState.instance.leave().timeout(const Duration(seconds: 2));
     } catch (e) {

apps/desktop/lib/src/controls/controls_probe.dart

@@ -2,16 +2,92 @@ import 'dart:async';
 
 import 'package:flutter/material.dart';
 
+/// What keeps the player's controls up besides the mouse on them: the
+/// mouse on a floating element over the picture (a pill, a card, the
+/// status pill: [ControlsHoldRegion]) or an open popover. While anything
+/// holds, the controls stay up; on release they hide on their usual
+/// countdown. Both designs follow it ([ControlsHoverProbe] with
+/// media_kit's controls, `UoscControls`).
+class ControlsHold extends ChangeNotifier {
+  final _by = <Object>{};
+  bool _told = false;
+  bool _queued = false;
+  bool _disposed = false;
+
+  bool get held => _told;
+
+  /// [who] holds ([on]) or lets go. Listeners hear it in a microtask, never
+  /// during a build or a dispose.
+  void set(Object who, bool on) {
+    if (on ? !_by.add(who) : !_by.remove(who)) return;
+    if (_queued) return;
+    _queued = true;
+    scheduleMicrotask(() {
+      _queued = false;
+      if (_disposed) return;
+      final now = _by.isNotEmpty;
+      if (now == _told) return;
+      _told = now;
+      notifyListeners();
+    });
+  }
+
+  @override
+  void dispose() {
+    _disposed = true;
+    super.dispose();
+  }
+}
+
+/// The mouse on [child] counts as the mouse on the controls: it holds
+/// [hold] while it is there.
+class ControlsHoldRegion extends StatefulWidget {
+  final ControlsHold? hold;
+  final Widget child;
+  const ControlsHoldRegion({super.key, required this.hold, required this.child});
+
+  @override
+  State<ControlsHoldRegion> createState() => _ControlsHoldRegionState();
+}
+
+class _ControlsHoldRegionState extends State<ControlsHoldRegion> {
+  @override
+  void didUpdateWidget(ControlsHoldRegion oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.hold != widget.hold) oldWidget.hold?.set(this, false);
+  }
+
+  @override
+  void dispose() {
+    widget.hold?.set(this, false);
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final hold = widget.hold;
+    if (hold == null) return widget.child;
+    return MouseRegion(
+      onEnter: (_) => hold.set(this, true),
+      onExit: (_) => hold.set(this, false),
+      child: widget.child,
+    );
+  }
+}
+
 /// Follows whether media_kit's desktop controls around [child] are up,
 /// by the same rule they use: up on mount and on any mouse movement,
 /// down [hideAfter] later or when the mouse leaves. media_kit does not
 /// expose its visibility; this lets the player draw a progress line while
-/// they are down. Never takes input.
+/// they are down. With [hold] held it keeps them (and itself) up. Never
+/// takes input.
 class ControlsHoverProbe extends StatefulWidget {
   final ValueNotifier<bool> shown;
   final Duration hideAfter;
+  final ControlsHold? hold;
   final Widget child;
-  const ControlsHoverProbe({super.key, required this.shown, required this.hideAfter, required this.child});
+  const ControlsHoverProbe(
+      {super.key, required this.shown, required this.hideAfter, this.hold, required this.child});
 
   @override
   State<ControlsHoverProbe> createState() => _ControlsHoverProbeState();
@@ -19,22 +95,67 @@ class ControlsHoverProbe extends StatefulWidget {
 
 class _ControlsHoverProbeState extends State<ControlsHoverProbe> {
   Timer? _timer;
+  // While held: media_kit's own countdown is restarted before it ends.
+  Timer? _keep;
+
+  bool get _held => widget.hold?.held ?? false;
 
   @override
   void initState() {
     super.initState();
+    widget.hold?.addListener(_holdChanged);
     // Not during this build: the line listening to [shown] may be built.
     WidgetsBinding.instance.addPostFrameCallback((_) {
       if (mounted) _wake();
     });
   }
 
+  @override
+  void didUpdateWidget(ControlsHoverProbe oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.hold != widget.hold) {
+      oldWidget.hold?.removeListener(_holdChanged);
+      widget.hold?.addListener(_holdChanged);
+      _holdChanged();
+    }
+  }
+
   @override
   void dispose() {
+    widget.hold?.removeListener(_holdChanged);
     _timer?.cancel();
+    _keep?.cancel();
     super.dispose();
   }
 
+  void _holdChanged() {
+    if (!mounted) return;
+    _keep?.cancel();
+    _keep = null;
+    if (_held) {
+      _keep = Timer.periodic(widget.hideAfter * 0.5, (_) => _pokeControls());
+    }
+    _pokeControls();
+    _wake();
+  }
+
+  /// media_kit's controls state is private: a guarded dynamic call to its
+  /// hover handler, as a mouse movement on it would make.
+  void _pokeControls() {
+    if (!mounted) return;
+    void visit(Element e) {
+      if (e is StatefulElement && e.state.runtimeType.toString() == '_MaterialDesktopVideoControlsState') {
+        try {
+          (e.state as dynamic).onHover();
+        } catch (_) {}
+        return;
+      }
+      e.visitChildElements(visit);
+    }
+
+    context.visitChildElements(visit);
+  }
+
   void _wake() {
     widget.shown.value = true;
     _timer?.cancel();
@@ -43,7 +164,8 @@ class _ControlsHoverProbeState extends State<ControlsHoverProbe> {
 
   void _hide() {
     _timer?.cancel();
-    if (mounted) widget.shown.value = false;
+    if (!mounted || _held) return;
+    widget.shown.value = false;
   }
 
   @override
@@ -52,7 +174,9 @@ class _ControlsHoverProbeState extends State<ControlsHoverProbe> {
         hitTestBehavior: HitTestBehavior.translucent,
         onEnter: (_) => _wake(),
         onHover: (_) => _wake(),
-        onExit: (_) => _hide(),
+        // Held (the mouse went onto a pill or the popover): media_kit's
+        // controls just hid on their own exit; bring them straight back.
+        onExit: (_) => _held ? _pokeControls() : _hide(),
         child: widget.child,
       );
 }

apps/desktop/lib/src/controls/player_settings.dart

@@ -8,8 +8,10 @@ import '../jellyfin/track_prefs.dart' show MpvTrack;
 import '../playback/playback_controller.dart' show PlaybackController, RenderMode;
 import '../shaders/shader_presets.dart';
 import '../state/session_state.dart';
+import '../shell/mark_problem.dart';
 import '../shell/motion.dart';
 import '../state/settings.dart';
+import '../widgets/app_menu.dart';
 import 'uosc/buttons.dart';
 import 'uosc/controls.dart';
 
@@ -56,27 +58,14 @@ class SettingRow extends StatelessWidget {
   }
 }
 
-DropdownButton<T> _dropdown<T>({
+AppSelect<T> _dropdown<T>({
   required Key key,
   required T value,
   required List<(T, String)> items,
   required ValueChanged<T> onChanged,
   bool expanded = false,
 }) =>
-    DropdownButton<T>(
-      key: key,
-      value: value,
-      isExpanded: expanded,
-      underline: const SizedBox.shrink(),
-      borderRadius: BorderRadius.circular(10),
-      items: [
-        for (final (v, label) in items)
-          DropdownMenuItem(value: v, child: Text(label, maxLines: 1, overflow: TextOverflow.ellipsis)),
-      ],
-      onChanged: (v) {
-        if (v != null) onChanged(v);
-      },
-    );
+    AppSelect<T>(key: key, value: value, items: items, onChanged: onChanged, expanded: expanded);
 
 /// Standard (our bars over media_kit's controls) or uosc. Live.
 class PlayerDesignSetting extends StatelessWidget {
@@ -324,19 +313,18 @@ class PlayerSettingsCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    return Material(
+    // The app's glass, like the Up next popover and the menus.
+    return AppGlass(
       key: const ValueKey('player-settings-card'),
-      elevation: 12,
-      borderRadius: BorderRadius.circular(16),
       child: SizedBox(
         width: 420,
         child: Padding(
-          padding: const EdgeInsets.fromLTRB(18, 14, 18, 10),
+          padding: const EdgeInsets.fromLTRB(16, 12, 16, 10),
           child: Column(
             mainAxisSize: MainAxisSize.min,
             crossAxisAlignment: CrossAxisAlignment.stretch,
             children: [
-              const Text('Player', style: TextStyle(fontWeight: FontWeight.w700, fontSize: 16)),
+              const Text('Player', style: TextStyle(fontWeight: FontWeight.w600, fontSize: 14)),
               const SizedBox(height: 4),
               ...playerSettingRows(renderMode: renderMode),
               if (tracks) ...[
@@ -345,10 +333,17 @@ class PlayerSettingsCard extends StatelessWidget {
                 const TrackSetting(type: JellyfinStreamType.audio),
               ],
               const SizedBox(height: 4),
-              Text(
+              Row(
+                children: [
+                  Expanded(
+                    child: Text(
                       'Custom shader files: Settings → Player',
                       style: TextStyle(color: Theme.of(context).colorScheme.onSurfaceVariant, fontSize: 12),
                     ),
+                  ),
+                  const MarkProblemButton(),
+                ],
+              ),
             ],
           ),
         ),

apps/desktop/lib/src/controls/uosc/buttons.dart

@@ -1,4 +1,3 @@
-import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:signals/signals_flutter.dart';
 import 'package:sync_relay_core/core.dart' show JellyfinStreamType;
@@ -10,6 +9,7 @@ import '../../screens/session/player_controls.dart' show TrackPick;
 import '../../shaders/shader_menu.dart';
 import '../../shaders/shader_presets.dart';
 import '../../state/settings.dart';
+import '../volume.dart';
 import 'controls.dart';
 import 'menu.dart';
 import 'style.dart';
@@ -166,9 +166,10 @@ class _UoscBadgeButtonState extends State<UoscBadgeButton> {
   }
 }
 
-/// Volume: click mutes / unmutes, the wheel steps 5 %.
+/// Volume: click mutes / unmutes, hovering shows a [VolumeBar] up to
+/// [maxVolume], the wheel steps [volumeStep].
 class UoscVolumeButton extends StatefulWidget {
-  /// 0..100.
+  /// 0..[maxVolume].
   final double volume;
   final ValueChanged<double> onChanged;
   const UoscVolumeButton({super.key, required this.volume, required this.onChanged});
@@ -178,21 +179,42 @@ class UoscVolumeButton extends StatefulWidget {
 }
 
 class _UoscVolumeButtonState extends State<UoscVolumeButton> {
+  final _steps = WheelSteps();
   double _beforeMute = 100;
+  bool _hover = false;
 
   @override
   Widget build(BuildContext context) {
     final v = widget.volume;
     final icon = v <= 0 ? Icons.volume_off_rounded : (v < 50 ? Icons.volume_down_rounded : Icons.volume_up_rounded);
-    return Listener(
-      onPointerSignal: (e) {
-        if (e is PointerScrollEvent && e.scrollDelta.dy != 0) {
-          widget.onChanged((v + (e.scrollDelta.dy < 0 ? 5 : -5)).clamp(0.0, 100.0));
-        }
-      },
-      child: UoscButton(
+    return MouseRegion(
+      onEnter: (_) => setState(() => _hover = true),
+      onExit: (_) => setState(() => _hover = false),
+      child: Listener(
+        // Claimed here, so the player's own wheel handler skips it.
+        onPointerSignal: (e) => _steps.handle(e, (step) => widget.onChanged(stepVolume(v, step * volumeStep))),
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            AnimatedSize(
+              duration: const Duration(milliseconds: 150),
+              child: _hover
+                  ? Padding(
+                      padding: const EdgeInsets.only(left: 6, right: 2),
+                      child: VolumeBar(
+                        key: const ValueKey('uosc-volume-bar'),
+                        volume: v,
+                        onChanged: widget.onChanged,
+                        color: UoscStyle.text,
+                        trackColor: UoscStyle.dim.withValues(alpha: 0.5),
+                      ),
+                    )
+                  : const SizedBox.shrink(),
+            ),
+            UoscButton(
               key: const ValueKey('uosc-volume'),
               icon: icon,
+              color: v > 100 ? boostColor : null,
               tooltip: 'Volume ${v.round()} % (scroll to change)',
               onPressed: () {
                 if (v > 0) {
@@ -203,6 +225,9 @@ class _UoscVolumeButtonState extends State<UoscVolumeButton> {
                 }
               },
             ),
+          ],
+        ),
+      ),
     );
   }
 }

apps/desktop/lib/src/controls/uosc/controls.dart

@@ -4,13 +4,14 @@ import 'package:flutter/material.dart';
 import 'package:signals/signals_flutter.dart';
 
 import '../../state/settings.dart';
+import '../controls_probe.dart' show ControlsHold;
 
 // The mpv-style (uosc) controls frame: a full-width timeline at the
 // bottom with a row of flat buttons above it, the title top left and a
 // corner widget top right.
 // Mouse movement shows them; after [UoscControls.hideAfter] without any
-// they fade out, the timeline shrinks to a 2 px line (gone when "Progress
-// line when hidden" is off) and the cursor hides. Our own frame: no
+// they fade out, the timeline shrinks to uosc's progress line (gone when
+// "Progress line when hidden" is off) and the cursor hides. Our own frame: no
 // media_kit controls state to reach into.
 
 class UoscControls extends StatefulWidget {
@@ -26,6 +27,10 @@ class UoscControls extends StatefulWidget {
   final Widget? topLeft;
   final VoidCallback? onDoubleTap;
   final Duration hideAfter;
+  /// Follows whether the controls are up (for overlays outside them).
+  final ValueNotifier<bool>? shown;
+  /// Keeps them up while held (the mouse on an overlay, an open popover).
+  final ControlsHold? holdBy;
   const UoscControls({
     super.key,
     required this.timeline,
@@ -35,9 +40,13 @@ class UoscControls extends StatefulWidget {
     this.topLeft,
     this.onDoubleTap,
     this.hideAfter = const Duration(seconds: 3),
+    this.shown,
+    this.holdBy,
   });
 
   static const buttonRowHeight = 40.0;
+  /// Under the button row, above the timeline.
+  static const rowBottomPadding = 4.0;
 
   /// The controls around [context], for widgets that need them kept up
   /// (a timeline drag, an open menu).
@@ -51,6 +60,7 @@ class UoscControls extends StatefulWidget {
 class UoscControlsState extends State<UoscControls> {
   bool _visible = true;
   int _holds = 0;
+  bool _heldBy = false;
   Timer? _timer;
 
   bool get visible => _visible;
@@ -58,18 +68,44 @@ class UoscControlsState extends State<UoscControls> {
   @override
   void initState() {
     super.initState();
+    widget.holdBy?.addListener(_holdByChanged);
+    // Not during this build: an overlay listening to [shown] may be built.
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (mounted) widget.shown?.value = true;
+    });
     _hideLater();
   }
 
+  @override
+  void didUpdateWidget(UoscControls oldWidget) {
+    super.didUpdateWidget(oldWidget);
+    if (oldWidget.holdBy != widget.holdBy) {
+      oldWidget.holdBy?.removeListener(_holdByChanged);
+      widget.holdBy?.addListener(_holdByChanged);
+      _holdByChanged();
+    }
+  }
+
   @override
   void dispose() {
+    widget.holdBy?.removeListener(_holdByChanged);
     _timer?.cancel();
     super.dispose();
   }
 
+  void _holdByChanged() {
+    final on = widget.holdBy?.held ?? false;
+    if (on == _heldBy || !mounted) return;
+    _heldBy = on;
+    hold(on);
+  }
+
   /// Show the controls and restart the hide countdown.
   void wake() {
-    if (!_visible && mounted) setState(() => _visible = true);
+    if (!_visible && mounted) {
+      setState(() => _visible = true);
+      widget.shown?.value = true;
+    }
     _hideLater();
   }
 
@@ -98,6 +134,7 @@ class UoscControlsState extends State<UoscControls> {
   void _hide() {
     if (!mounted || _holds > 0 || !_visible) return;
     setState(() => _visible = false);
+    widget.shown?.value = false;
   }
 
   @override
@@ -174,8 +211,9 @@ class UoscControlsState extends State<UoscControls> {
                 child: AnimatedOpacity(
                   duration: fade,
                   opacity: visible ? 1 : 0,
+                  // The buttons centred on the title, like the standard
+                  // design's top bar.
                   child: Row(
-                    crossAxisAlignment: CrossAxisAlignment.start,
                     children: [
                       Expanded(
                         child: Padding(
@@ -185,7 +223,8 @@ class UoscControlsState extends State<UoscControls> {
                               : Align(alignment: AlignmentDirectional.centerStart, child: widget.topLeft),
                         ),
                       ),
-                      ?widget.top,
+                      if (widget.top != null)
+                        Padding(padding: const EdgeInsets.fromLTRB(0, 12, 6, 0), child: widget.top),
                     ],
                   ),
                 ),
@@ -206,7 +245,7 @@ class UoscControlsState extends State<UoscControls> {
                     duration: fade,
                     opacity: visible ? 1 : 0,
                     child: Padding(
-                      padding: const EdgeInsets.fromLTRB(6, 0, 6, 4),
+                      padding: const EdgeInsets.fromLTRB(6, 0, 6, UoscControls.rowBottomPadding),
                       child: SizedBox(
                         height: UoscControls.buttonRowHeight,
                         child: Row(children: [...widget.left, const Spacer(), ...widget.right]),

apps/desktop/lib/src/controls/uosc/style.dart

@@ -4,9 +4,7 @@ import 'package:flutter/material.dart';
 // owner runs it: flat black panels, white icons, a muted blue fill.
 
 abstract final class UoscStyle {
-  /// Timeline background and the boxes on it.
-  static const bar = Color(0xCC000000);
-  /// Played part of the timeline; also the active menu row.
+  /// The active menu row.
   static const fill = Color(0xFF4C6A8E);
   /// Menus and tooltips.
   static const panel = Color(0xF0101010);
@@ -51,8 +49,8 @@ class UoscTooltip extends StatelessWidget {
   }
 }
 
-/// A small dark box with one line of text (the timeline's times, the
-/// hover chapter title).
+/// A small dark box with one line of text (the timeline's hover time and
+/// chapter title).
 class UoscBox extends StatelessWidget {
   final String text;
   final Color color;

apps/desktop/lib/src/controls/uosc/timeline.dart

@@ -1,3 +1,4 @@
+import 'dart:async';
 import 'dart:math' as math;
 
 import 'package:flutter/material.dart';
@@ -6,6 +7,66 @@ import '../../playback/media_marks.dart';
 import 'controls.dart';
 import 'style.dart';
 
+// A port of uosc's timeline (`elements/Timeline.lua`, defaults from
+// `uosc.conf` / `main.lua`), style `line`, scale 1: a translucent black
+// band, the position a thin white line (no filled progress), the
+// uncached part hatched, chapter diamonds on the top edge, elapsed time
+// left and the time remaining right, the buffered seconds next to the
+// position while under the threshold, and a tooltip with the time (and
+// the chapter title) under the mouse.
+
+/// uosc's defaults at scale 1.
+abstract final class UoscTimelineSpec {
+  /// `timeline_size`: the band's height when expanded.
+  static const size = 40.0;
+
+  /// `timeline_border`: band above the line, also the diamonds' border.
+  static const border = 1.0;
+
+  /// `timeline_line_width`: the position line.
+  static const lineWidth = 2.0;
+
+  /// `progress_size`: what is left when the controls hide.
+  static const progressSize = 2.0;
+
+  /// `progress_line_width`: the position line once minimized.
+  static const progressLineWidth = 20.0;
+
+  /// floor(min((size + 60) * 0.2, size * 0.96)).
+  static const fontSize = 20.0;
+
+  /// max(floor((size - fontSize) / 2.5), 4): the times' inset.
+  static const spacing = 8.0;
+
+  /// `text_border`: the outline of text drawn on the band.
+  static const textBorder = 1.2;
+
+  /// `opacity.timeline` (the band) and `opacity.chapters` (diamond fill).
+  static const opacity = 0.9;
+  static const chaptersOpacity = 0.8;
+
+  /// Gap between the band and its tooltips, and between tooltips.
+  static const tooltipGap = 2.0;
+
+  /// `buffered_time_threshold`: the cache label shows below this.
+  static const bufferedThreshold = Duration(seconds: 60);
+
+  /// max((size + border) / 10, 3): diamond radius cap.
+  static const chapterSize = (size + border) / 10;
+}
+
+/// uosc's `format_time(seconds, duration)`: mpv's "HH:MM:SS", trimmed to
+/// "MM:SS" for media under an hour and "SS" under a minute; negative
+/// values keep their minus ("-01:47:30").
+String uoscClock(Duration d, Duration max) {
+  final neg = d.isNegative && d.inSeconds != 0;
+  final t = d.abs();
+  String two(int n) => n.toString().padLeft(2, '0');
+  final full = '${two(t.inHours)}:${two(t.inMinutes % 60)}:${two(t.inSeconds % 60)}';
+  final trim = max < const Duration(minutes: 1) ? 6 : (max < const Duration(hours: 1) ? 3 : 0);
+  return '${neg ? '-' : ''}${full.substring(trim)}';
+}
+
 /// Fraction of [total] at [d], 0..1 (0 without a duration).
 double timelineFraction(Duration d, Duration total) {
   final t = total.inMicroseconds;
@@ -13,36 +74,104 @@ double timelineFraction(Duration d, Duration total) {
   return (d.inMicroseconds / t).clamp(0.0, 1.0);
 }
 
-/// The cached-ahead part of a timeline of [size]: from the playing
-/// position to the end of mpv's cache. Null when nothing is cached ahead.
-Rect? cacheRect(Size size, {required Duration position, required Duration buffered, required Duration duration}) {
-  final from = timelineFraction(position, duration) * size.width;
-  final to = timelineFraction(buffered, duration) * size.width;
-  if (to - from < 0.5) return null;
-  return Rect.fromLTRB(from, 0, to, size.height);
+/// Where the uncached part starts (it runs to the end), as a fraction;
+/// null when nothing known is uncached. We know only the end of mpv's
+/// cache ahead ([buffered]); without it (0) uosc draws no ranges either,
+/// and a cache that reaches the end (within uosc's 0.5 s) leaves none.
+double? uncachedFrom({required Duration position, required Duration buffered, required Duration duration}) {
+  if (duration <= Duration.zero || buffered <= Duration.zero) return null;
+  final from = buffered > position ? buffered : position;
+  if (duration - from <= const Duration(milliseconds: 500)) return null;
+  return timelineFraction(from, duration);
 }
 
-/// The hatching of [r]: 45° strokes from bottom-left to top-right,
-/// [spacing] apart along x, across all of [r] (the painter clips them).
-/// The first starts half a step in, so none just grazes the corner.
-List<(Offset, Offset)> hatchLines(Rect r, {double spacing = 6}) {
-  if (r.isEmpty || spacing <= 0) return const [];
-  final h = r.height;
-  return [
-    for (var x = r.left - h + spacing / 2; x < r.right; x += spacing) (Offset(x, r.bottom), Offset(x + h, r.top)),
-  ];
+/// The cache label next to the position ("12s"): the seconds buffered
+/// ahead, shown while under [UoscTimelineSpec.bufferedThreshold] and the
+/// cache does not reach the end (uosc drops it at eof-cached).
+String? cacheLabel({required Duration position, required Duration buffered, required Duration duration}) {
+  if (duration <= Duration.zero || buffered <= Duration.zero) return null;
+  if (duration - buffered <= const Duration(milliseconds: 500)) return null;
+  final ahead = buffered > position ? buffered - position : Duration.zero;
+  if (ahead >= UoscTimelineSpec.bufferedThreshold) return null;
+  return '${(ahead.inMilliseconds / 1000).round()}s';
 }
 
-/// The uosc timeline: full width, elapsed part filled, the cached range
-/// ahead hatched, chapter starts as white diamonds on the top edge, the
-/// current time in a box at the left and the duration at the right.
-/// Hover shows the chapter title over the hover time. When the controls
-/// hide ([expanded] false) it shrinks to a thin line with chapter ticks.
-/// Like the media_kit bar it reports a seek on every drag move and on
-/// release ([onSeek]); the session sends those through the user-seek path.
+/// The band's geometry at one size, as uosc lays it out: the position
+/// line takes [lineWidth] pixels, and times map around it (`t2x`) so no
+/// time lies inside the line.
+class UoscTimelineGeometry {
+  final double width;
+
+  /// The foreground height (without the top border).
+  final double size;
+
+  /// The playing position, 0..1.
+  final double progress;
+  final double lineWidth;
+  const UoscTimelineGeometry({
+    required this.width,
+    required this.size,
+    required this.progress,
+    this.lineWidth = UoscTimelineSpec.lineWidth,
+  });
+
+  /// [size] while the band animates between hidden (0) and shown (1)
+  /// (`get_effective_size`).
+  static double sizeAt(double visibility) =>
+      UoscTimelineSpec.progressSize +
+      ((UoscTimelineSpec.size - UoscTimelineSpec.progressSize) * visibility).ceilToDouble();
+
+  /// The position line's width at [size]: it grows to
+  /// [UoscTimelineSpec.progressLineWidth] over the last eighth of the
+  /// collapse.
+  static double lineWidthAt(double size) {
+    const p = UoscTimelineSpec.progressSize;
+    final minimized = 1 - math.min((size - p) / ((UoscTimelineSpec.size - p) / 8), 1.0);
+    return UoscTimelineSpec.lineWidth + (UoscTimelineSpec.progressLineWidth - UoscTimelineSpec.lineWidth) * minimized;
+  }
+
+  double get height => size + UoscTimelineSpec.border;
+
+  /// Top of the foreground (below the border).
+  double get top => UoscTimelineSpec.border;
+  double get lineLeft => ((width - lineWidth) * progress).roundToDouble();
+  double get lineRight => ((width - lineWidth) * progress + lineWidth).roundToDouble();
+
+  /// x of [fraction] (uosc's `t2x`): past the position, shifted over the line.
+  double x(double fraction) {
+    final lw = lineWidth - 1;
+    final at = 0.5 + (width - lw - 1) * fraction;
+    return fraction <= progress ? at : at + lw;
+  }
+
+  /// The fraction at [x] (uosc's `get_time_at_x`): x on the line is the
+  /// position.
+  double fractionAt(double x) {
+    const lw = UoscTimelineSpec.lineWidth - 1;
+    final timeWidth = width - lw - 1;
+    if (timeWidth <= 0) return 0;
+    final a = timeWidth * progress, b = a + lw;
+    var at = x - 0.5;
+    if (at > b) {
+      at -= lw;
+    } else if (at > a) {
+      at = a;
+    }
+    return (at / timeWidth).clamp(0.0, 1.0);
+  }
+
+  /// Chapter diamond radius at this size; doubled while hovered.
+  double get diamondRadius => math.min(math.max(1.0, size * 0.8), UoscTimelineSpec.chapterSize);
+}
+
+/// The uosc timeline. [expanded] false (the controls hidden) shrinks it,
+/// animated, to the progress line. Seeks ([onSeek]) on press, on every
+/// drag move and on release; a press on a hovered chapter diamond jumps
+/// to that chapter. The session sends those through the user-seek path.
 class UoscTimeline extends StatefulWidget {
   final Duration position;
   final Duration duration;
+
   /// End of the cached range ([PlaybackController.buffered]).
   final Duration buffered;
   final List<MediaChapter> chapters;
@@ -58,24 +187,32 @@ class UoscTimeline extends StatefulWidget {
     required this.onSeek,
   });
 
-  static const height = 30.0;
-  static const collapsedHeight = 2.0;
+  static const height = UoscTimelineSpec.size + UoscTimelineSpec.border;
+  static const collapsedHeight = UoscTimelineSpec.progressSize + UoscTimelineSpec.border;
+
+  /// uosc's `animation_duration`.
+  static const animation = Duration(milliseconds: 100);
 
   @override
   State<UoscTimeline> createState() => _UoscTimelineState();
 }
 
 class _UoscTimelineState extends State<UoscTimeline> {
-  double? _hoverX;
+  Offset? _hover;
   bool _dragging = false;
   double _dragFraction = 0;
+  Duration? _lastSent;
+  // A released seek, shown until the position catches up (else the line
+  // jumps back to the old position for a moment).
+  double? _pending;
+  Timer? _pendingTimer;
 
   Duration _at(double fraction) => widget.duration * fraction.clamp(0.0, 1.0);
 
-  void _seekTo(double x, double width) {
-    if (widget.duration <= Duration.zero || width <= 0) return;
-    _dragFraction = (x / width).clamp(0.0, 1.0);
-    widget.onSeek(_at(_dragFraction));
+  void _send(Duration d) {
+    if (d == _lastSent) return;
+    _lastSent = d;
+    widget.onSeek(d);
   }
 
   void _drag(bool on) {
@@ -84,204 +221,425 @@ class _UoscTimelineState extends State<UoscTimeline> {
     UoscControls.maybeOf(context)?.hold(on);
   }
 
+  void _settle(double fraction) {
+    _pending = fraction;
+    _pendingTimer?.cancel();
+    _pendingTimer = Timer(const Duration(seconds: 2), () {
+      if (mounted) setState(() => _pending = null);
+    });
+  }
+
   @override
   void didUpdateWidget(UoscTimeline old) {
     super.didUpdateWidget(old);
-    if (!widget.expanded && old.expanded) _hoverX = null;
+    if (!widget.expanded && old.expanded) _hover = null;
+    final p = _pending;
+    if (p != null && widget.duration > Duration.zero) {
+      final off = (widget.position - _at(p)).abs();
+      if (off < const Duration(milliseconds: 1500)) {
+        _pending = null;
+        _pendingTimer?.cancel();
+      }
+    }
   }
 
   @override
   void dispose() {
+    _pendingTimer?.cancel();
     // A drag cut short by a rebuild must not keep the controls up.
     if (_dragging) UoscControls.maybeOf(context)?.hold(false);
     super.dispose();
   }
 
+  /// The chapter whose diamond is within twice its radius of [at].
+  int? _hoveredChapter(UoscTimelineGeometry geo, List<MediaChapter> marks, Offset? at) {
+    if (at == null || _dragging) return null;
+    final reach = geo.diamondRadius * 2;
+    int? best;
+    var bestD = double.infinity;
+    for (var i = 0; i < marks.length; i++) {
+      final cx = geo.x(timelineFraction(marks[i].start, widget.duration));
+      final d = (Offset(cx, 0) - at).distance;
+      if (d <= reach && d < bestD) {
+        best = i;
+        bestD = d;
+      }
+    }
+    return best;
+  }
+
   @override
   Widget build(BuildContext context) {
-    return LayoutBuilder(builder: (context, constraints) {
+    final font = DefaultTextStyle.of(context).style.fontFamily ?? Theme.of(context).textTheme.bodyMedium?.fontFamily;
+    return LayoutBuilder(
+      builder: (context, constraints) {
         final width = constraints.maxWidth;
+        return TweenAnimationBuilder<double>(
+          tween: Tween(end: widget.expanded ? 1 : 0),
+          duration: UoscTimeline.animation,
+          builder: (context, visibility, _) => _band(width, visibility, font),
+        );
+      },
+    );
+  }
+
+  Widget _band(double width, double visibility, String? font) {
     final expanded = widget.expanded;
-      final h = expanded ? UoscTimeline.height : UoscTimeline.collapsedHeight;
-      final played = _dragging ? _dragFraction : timelineFraction(widget.position, widget.duration);
-      final hoverX = expanded ? _hoverX : null;
-      final hoverAt = hoverX == null || width <= 0 ? null : _at(hoverX / width);
+    final duration = widget.duration;
+    final size = UoscTimelineGeometry.sizeAt(visibility);
+    final progress = _dragging ? _dragFraction : (_pending ?? timelineFraction(widget.position, duration));
+    final shown = _at(progress);
+    final geo = UoscTimelineGeometry(
+      width: width,
+      size: size,
+      progress: progress,
+      lineWidth: UoscTimelineGeometry.lineWidthAt(size),
+    );
+    final marks = duration > Duration.zero ? widget.chapters : const <MediaChapter>[];
+    final hover = expanded ? _hover : null;
+    final hovered = _hoveredChapter(geo, marks, hover);
+    final hoverFraction = hovered != null
+        ? timelineFraction(marks[hovered].start, duration)
+        : (hover == null || duration <= Duration.zero ? null : geo.fractionAt(hover.dx));
+    final hoverAt = hoverFraction == null ? null : _at(hoverFraction);
+    final cursorX = hovered != null ? geo.x(hoverFraction!) : hover?.dx;
     final hoverChapter = hoverAt == null ? null : chapterIndexAt(widget.chapters, hoverAt);
     final hoverTitle = hoverChapter == null ? '' : widget.chapters[hoverChapter].title;
-      final withHours = widget.duration >= const Duration(hours: 1);
-      final marks = [
-        for (final c in widget.chapters)
-          if (c.start > Duration.zero && widget.duration > Duration.zero) c,
-      ];
+    // Text fades out just before it would overflow the shrinking band.
+    const hideBelow = UoscTimelineSpec.fontSize * 0.8;
+    final textOpacity = (size - hideBelow).clamp(0.0, hideBelow / 2) / (hideBelow / 2);
+    final radius = geo.diamondRadius;
+    final timestampGap = UoscTimelineSpec.tooltipGap + (hovered != null ? radius * 2 : radius).roundToDouble();
+    final painter = UoscTimelinePainter(
+      geometry: geo,
+      visibility: visibility,
+      uncached: uncachedFrom(position: widget.position, buffered: widget.buffered, duration: duration),
+      chapters: [for (final c in marks) timelineFraction(c.start, duration)],
+      hoveredChapter: hovered,
+      hoverX: cursorX,
+      textOpacity: textOpacity,
+      elapsed: duration > Duration.zero ? uoscClock(shown, duration) : null,
+      remaining: duration > Duration.zero ? uoscClock(shown - duration, duration) : null,
+      cache: cacheLabel(position: widget.position, buffered: widget.buffered, duration: duration),
+      fontFamily: font,
+    );
     final bar = SizedBox(
       key: const ValueKey('uosc-timeline'),
       width: width,
-        height: h,
+      height: geo.height,
       child: Stack(
         clipBehavior: Clip.none,
         children: [
           Positioned.fill(
-              child: CustomPaint(
-                painter: UoscTimelinePainter(
-                  played: played,
-                  cache: (size) => cacheRect(size,
-                      position: widget.position, buffered: widget.buffered, duration: widget.duration),
-                  cacheKey: (widget.position, widget.buffered, widget.duration),
-                  hoverX: _dragging ? null : hoverX,
-                  hatched: expanded,
+            child: RepaintBoundary(child: CustomPaint(painter: painter)),
           ),
-              ),
-            ),
-            for (final c in marks)
-              if (expanded)
+          if (hoverAt != null && cursorX != null)
             Positioned(
-                  key: ValueKey('uosc-chapter-${c.index}'),
-                  left: width * timelineFraction(c.start, widget.duration) - 4,
-                  top: -4,
-                  width: 8,
-                  height: 8,
+              left: 0,
+              right: 0,
+              bottom: geo.height + timestampGap,
+              height: 160,
               child: IgnorePointer(
-                    child: Transform.rotate(
-                      angle: math.pi / 4,
-                      child: Container(
-                        margin: const EdgeInsets.all(1.2),
-                        decoration: BoxDecoration(
-                          color: Colors.white,
-                          border: Border.all(color: Colors.black54, width: 0.6),
-                        ),
-                      ),
-                    ),
-                  ),
-                )
-              else
-                Positioned(
-                  key: ValueKey('uosc-chapter-tick-${c.index}'),
-                  left: width * timelineFraction(c.start, widget.duration) - 1,
-                  top: -2,
-                  width: 2,
-                  height: h + 2,
-                  child: const IgnorePointer(child: ColoredBox(color: Colors.white70)),
-                ),
-            if (expanded) ...[
-              Positioned(
-                left: 4,
-                top: 0,
-                bottom: 0,
-                child: IgnorePointer(
-                  child: Center(
-                    child: UoscBox(formatUoscTime(_at(played), withHours: withHours),
-                        key: const ValueKey('uosc-time'), color: UoscStyle.bar),
-                  ),
-                ),
-              ),
-              Positioned(
-                right: 4,
-                top: 0,
-                bottom: 0,
-                child: IgnorePointer(
-                  child: Center(
-                    child: UoscBox(formatUoscTime(widget.duration, withHours: withHours),
-                        key: const ValueKey('uosc-duration'), color: UoscStyle.bar),
-                  ),
-                ),
-              ),
-            ],
-            if (hoverAt != null)
-              Positioned(
-                // Kept clear of the window edges (the tip is centred).
-                left: hoverX!.clamp(math.min(60.0, width / 2), math.max(width - 60, width / 2)),
-                bottom: h + 8,
-                child: IgnorePointer(
-                  child: FractionalTranslation(
-                    translation: const Offset(-0.5, 0),
-                    child: Column(
-                      mainAxisSize: MainAxisSize.min,
-                      spacing: 4,
+                child: CustomMultiChildLayout(
+                  delegate: _TooltipLayout(x: cursorX),
                   children: [
-                        if (hoverTitle.isNotEmpty) UoscBox(hoverTitle, key: const ValueKey('uosc-hover-chapter')),
-                        UoscBox(formatUoscTime(hoverAt, withHours: withHours),
-                            key: const ValueKey('uosc-hover-time')),
-                      ],
+                    LayoutId(
+                      id: #time,
+                      child: UoscBox(
+                        uoscClock(hoverAt, duration),
+                        key: const ValueKey('uosc-hover-time'),
+                        color: Colors.black,
+                        style: _tipStyle,
                       ),
                     ),
+                    if (hoverTitle.isNotEmpty)
+                      LayoutId(
+                        id: #chapter,
+                        child: UoscBox(
+                          hoverTitle,
+                          key: const ValueKey('uosc-hover-chapter'),
+                          color: Colors.black,
+                          style: _tipStyle.copyWith(fontWeight: FontWeight.bold),
+                        ),
+                      ),
+                  ],
+                ),
               ),
             ),
         ],
       ),
     );
     if (!expanded) return IgnorePointer(child: bar);
+    Offset clampTo(Offset p) => Offset(p.dx.clamp(0.0, width), p.dy);
     return MouseRegion(
       cursor: SystemMouseCursors.click,
-        onEnter: (e) => setState(() => _hoverX = e.localPosition.dx.clamp(0, width)),
-        onHover: (e) => setState(() => _hoverX = e.localPosition.dx.clamp(0, width)),
-        onExit: (_) => setState(() => _hoverX = null),
+      onEnter: (e) => setState(() => _hover = clampTo(e.localPosition)),
+      onHover: (e) => setState(() => _hover = clampTo(e.localPosition)),
+      onExit: (_) {
+        if (!_dragging) setState(() => _hover = null);
+      },
       child: Listener(
         behavior: HitTestBehavior.opaque,
         onPointerDown: (e) {
-            _dragFraction = width <= 0 ? 0 : (e.localPosition.dx / width).clamp(0.0, 1.0);
+          if (duration <= Duration.zero || width <= 0) return;
+          final at = clampTo(e.localPosition);
+          final chapter = _hoveredChapter(geo, marks, at);
+          _lastSent = null;
+          if (chapter != null) {
+            final f = timelineFraction(marks[chapter].start, duration);
+            _settle(f);
+            _send(marks[chapter].start);
+            setState(() {});
+            return;
+          }
+          _pending = null;
+          _dragFraction = geo.fractionAt(at.dx);
           _drag(true);
+          _send(_at(_dragFraction));
         },
         onPointerMove: (e) {
-            setState(() => _hoverX = e.localPosition.dx.clamp(0, width));
-            _seekTo(e.localPosition.dx, width);
+          if (!_dragging) return;
+          final at = clampTo(e.localPosition);
+          setState(() {
+            _hover = at;
+            _dragFraction = geo.fractionAt(at.dx);
+          });
+          _send(_at(_dragFraction));
         },
         onPointerUp: (e) {
-            _seekTo(e.localPosition.dx, width);
+          if (!_dragging) return;
+          _send(_at(_dragFraction));
+          _settle(_dragFraction);
+          final p = e.localPosition;
+          if (p.dx < 0 || p.dx > width || p.dy < 0 || p.dy > geo.height) _hover = null;
           _drag(false);
         },
         onPointerCancel: (_) => _drag(false),
         child: bar,
       ),
     );
-    });
+  }
+
+  static const _tipStyle = TextStyle(color: UoscStyle.text, fontSize: UoscTimelineSpec.fontSize, height: 1);
+}
+
+/// The hover tooltips: the time centred on [x], the chapter title over
+/// it; each kept [UoscTimelineSpec.tooltipGap] inside the band's ends.
+class _TooltipLayout extends MultiChildLayoutDelegate {
+  final double x;
+  _TooltipLayout({required this.x});
+
+  @override
+  void performLayout(Size size) {
+    const gap = UoscTimelineSpec.tooltipGap;
+    double left(double w) => (x - w / 2).clamp(gap, math.max(gap, size.width - gap - w));
+    final loose = BoxConstraints.loose(size);
+    final time = layoutChild(#time, loose);
+    final timeTop = size.height - time.height;
+    positionChild(#time, Offset(left(time.width), timeTop));
+    if (hasChild(#chapter)) {
+      final chapter = layoutChild(#chapter, loose);
+      positionChild(#chapter, Offset(left(chapter.width), timeTop - gap - chapter.height));
     }
   }
 
-/// Background, cached range (hatched, or a faint band when collapsed),
-/// the played part and the hover line.
+  @override
+  bool shouldRelayout(_TooltipLayout old) => old.x != x;
+}
+
+/// Paints the band as uosc does: background, the position line, the
+/// uncached hatching, chapter diamonds, the times, the hover line.
 class UoscTimelinePainter extends CustomPainter {
-  final double played;
-  final Rect? Function(Size size) cache;
-  /// What [cache] depends on (repaint when it changes).
-  final Object cacheKey;
+  final UoscTimelineGeometry geometry;
+
+  /// 0 hidden .. 1 shown (picks the hatching texture and its strength).
+  final double visibility;
+
+  /// Start of the uncached part (to the end), as a fraction.
+  final double? uncached;
+
+  /// Chapter starts, as fractions.
+  final List<double> chapters;
+  final int? hoveredChapter;
+
+  /// The hover line (the mouse, or the hovered chapter).
   final double? hoverX;
-  final bool hatched;
+  final double textOpacity;
+  final String? elapsed;
+  final String? remaining;
+  final String? cache;
+  final String? fontFamily;
   const UoscTimelinePainter({
-    required this.played,
-    required this.cache,
-    required this.cacheKey,
+    required this.geometry,
+    this.visibility = 1,
+    this.uncached,
+    this.chapters = const [],
+    this.hoveredChapter,
     this.hoverX,
-    this.hatched = true,
+    this.textOpacity = 1,
+    this.elapsed,
+    this.remaining,
+    this.cache,
+    this.fontFamily,
   });
 
+  double get played => geometry.progress;
+
   @override
   void paint(Canvas canvas, Size size) {
-    final all = Offset.zero & size;
-    canvas.drawRect(all, Paint()..color = UoscStyle.bar);
-    final c = cache(size);
-    if (c != null) {
-      if (hatched) {
-        canvas.save();
-        canvas.clipRect(c);
-        final stroke = Paint()
-          ..color = const Color(0x40FFFFFF)
-          ..strokeWidth = 1.5;
-        for (final (a, b) in hatchLines(c)) {
-          canvas.drawLine(a, b, stroke);
-        }
-        canvas.restore();
-      } else {
-        canvas.drawRect(c, Paint()..color = const Color(0x40FFFFFF));
-      }
-    }
-    canvas.drawRect(Rect.fromLTWH(0, 0, size.width * played, size.height), Paint()..color = UoscStyle.fill);
+    final g = geometry;
+    final w = size.width, bottom = size.height, top = g.top;
+    final line = Rect.fromLTRB(g.lineLeft, top, g.lineRight, bottom);
+    // Background (`opacity.timeline`) around the position line.
+    final bg = Path()
+      ..fillType = PathFillType.evenOdd
+      ..addRect(Offset.zero & size)
+      ..addRect(line);
+    canvas.drawPath(bg, Paint()..color = Colors.black.withValues(alpha: UoscTimelineSpec.opacity));
+    canvas.drawRect(line, Paint()..color = Colors.white);
+    _hatch(canvas, w, top, bottom);
+    _chapters(canvas);
+    if (textOpacity > 0) _times(canvas, w, top, bottom, line);
     final x = hoverX;
     if (x != null) {
-      canvas.drawRect(Rect.fromLTWH(x - 0.5, 0, 1, size.height), Paint()..color = Colors.white70);
+      final onLine = line.left - 0.5 < x && x < line.right + 0.5;
+      canvas.drawRect(
+        Rect.fromLTRB(x - 0.5, top, x + 0.5, bottom),
+        Paint()..color = (onLine ? Colors.black : Colors.white).withValues(alpha: 0.33),
+      );
     }
   }
 
-  @override
-  bool shouldRepaint(UoscTimelinePainter old) =>
-      old.played != played || old.cacheKey != cacheKey || old.hoverX != hoverX || old.hatched != hatched;
+  /// uosc's texture "b" (shown) or "a" (hidden) at 80 px: "/" stripes
+  /// 1.6 px thick, white then black shifted by size / 24 (or / 28).
+  void _hatch(Canvas canvas, double w, double top, double bottom) {
+    final from = uncached;
+    if (from == null) return;
+    final ax = from * (geometry.width) < 0.5 ? 0.0 : geometry.x(from).floorToDouble();
+    if (ax >= w) return;
+    final shown = visibility > 0;
+    const tile = 80.0, unit = tile / 100;
+    final period = (shown ? 100 / 12 : 100 / 14) * unit;
+    final phase = shown ? 0.0 : 5.727 * unit;
+    final offset = tile / (shown ? 24 : 28);
+    final h = bottom - top;
+    canvas.save();
+    canvas.clipRect(Rect.fromLTRB(ax, top, w, bottom));
+    void stripes(Color color, double opacity, double anchor) {
+      final paint = Paint()
+        ..color = color.withValues(alpha: opacity)
+        ..strokeWidth = 2 * unit;
+      // x + (y - bottom) = anchor + phase + k * period.
+      final base = anchor + phase;
+      final k0 = ((ax - h - base) / period).floor() - 1;
+      for (var k = k0; base + k * period <= w + 1; k++) {
+        final c = base + k * period;
+        canvas.drawLine(Offset(c, bottom), Offset(c + h, top), paint);
+      }
+    }
+
+    stripes(Colors.white, 0.4 - 0.2 * visibility, 0);
+    stripes(Colors.black, 0.6 - 0.2 * visibility, offset);
+    canvas.restore();
+  }
+
+  void _chapters(Canvas canvas) {
+    final g = geometry;
+    final r = g.diamondRadius;
+    if (r <= 0) return;
+    void diamond(double fraction, double radius) {
+      final c = Offset(g.x(fraction), 0);
+      Path shape(double r) => Path()
+        ..moveTo(c.dx - r, c.dy)
+        ..lineTo(c.dx, c.dy - r)
+        ..lineTo(c.dx + r, c.dy)
+        ..lineTo(c.dx, c.dy + r)
+        ..close();
+      final inner = shape(radius);
+      // A 1 px border outside the fill (`\bord`), the fill translucent.
+      final outer = shape(radius + UoscTimelineSpec.border * math.sqrt2);
+      canvas.drawPath(Path.combine(PathOperation.difference, outer, inner), Paint()..color = Colors.black);
+      canvas.drawPath(inner, Paint()..color = Colors.white.withValues(alpha: UoscTimelineSpec.chaptersOpacity));
+    }
+
+    for (var i = 0; i < chapters.length; i++) {
+      if (i != hoveredChapter) diamond(chapters[i], r);
+    }
+    final h = hoveredChapter;
+    if (h != null && h < chapters.length) diamond(chapters[h], r * 2);
+  }
+
+  TextPainter _text(String s, double fontSize, Color color, {Paint? foreground}) => TextPainter(
+    text: TextSpan(
+      text: s,
+      style: TextStyle(
+        fontFamily: fontFamily,
+        fontSize: fontSize,
+        height: 1,
+        color: foreground == null ? color : null,
+        foreground: foreground,
+        fontFeatures: const [FontFeature.tabularFigures()],
+      ),
+    ),
+    textDirection: TextDirection.ltr,
+  )..layout();
+
+  /// Text on the band: white with a black outline, inverted where it
+  /// crosses the position line (uosc clips one copy to each).
+  void _label(Canvas canvas, String s, double fontSize, double opacity, Offset at, Rect line, Size size) {
+    void copy(Color fill, Color outline) {
+      _text(
+        s,
+        fontSize,
+        fill,
+        foreground: Paint()
+          ..style = PaintingStyle.stroke
+          ..strokeWidth = UoscTimelineSpec.textBorder * 2
+          ..strokeJoin = StrokeJoin.round
+          ..color = outline.withValues(alpha: opacity),
+      ).paint(canvas, at);
+      _text(s, fontSize, fill.withValues(alpha: opacity)).paint(canvas, at);
+    }
+
+    canvas.save();
+    canvas.clipPath(
+      Path()
+        ..fillType = PathFillType.evenOdd
+        ..addRect(Rect.fromLTWH(-20, -20, size.width + 40, size.height + 40))
+        ..addRect(line),
+    );
+    copy(Colors.white, Colors.black);
+    canvas.restore();
+    canvas.save();
+    canvas.clipRect(line);
+    copy(Colors.black, Colors.white);
+    canvas.restore();
+  }
+
+  void _times(Canvas canvas, double w, double top, double bottom, Rect line) {
+    const fs = UoscTimelineSpec.fontSize, spacing = UoscTimelineSpec.spacing;
+    final size = Size(w, bottom);
+    final cy = top + (bottom - top) / 2;
+    final e = elapsed, r = remaining;
+    final ew = e == null ? 0.0 : _text(e, fs, Colors.white).width;
+    final rw = r == null ? 0.0 : _text(r, fs, Colors.white).width;
+    final c = cache;
+    if (c != null) {
+      const cfs = fs * 0.8, margin = 5.0;
+      final cw = _text(c, cfs, Colors.white).width;
+      var x = line.right + margin;
+      final minX = spacing + margin + ew, maxX = w - spacing - margin - rw;
+      if (x < minX) {
+        x = minX;
+      } else if (x + cw > maxX) {
+        x = maxX - cw;
+      }
+      _label(canvas, c, cfs, textOpacity * 0.6, Offset(x, cy - cfs / 2), line, size);
+    }
+    if (e != null) _label(canvas, e, fs, textOpacity, Offset(spacing, cy - fs / 2), line, size);
+    if (r != null) _label(canvas, r, fs, textOpacity, Offset(w - spacing - rw, cy - fs / 2), line, size);
+  }
+
+  @override
+  bool shouldRepaint(UoscTimelinePainter old) => true;
 }

apps/desktop/lib/src/controls/uosc/volume_flash.dart

@@ -0,0 +1,128 @@
+import 'dart:math' as math;
+
+import 'package:flutter/material.dart';
+
+import '../volume.dart' show maxVolume;
+
+// uosc's volume slider (`elements/Volume.lua`) as it flashes on a volume
+// change: a vertical band at the right edge, black at `opacity.slider`
+// with a white gauge from the bottom, notches at 100 %, the value at the
+// bottom (black on the gauge, white off it).
+
+/// The flashed uosc volume slider; size it with [UoscVolumeSlider.width]
+/// and the height uosc gives it (see [UoscVolumeSlider.heightFor]).
+class UoscVolumeSlider extends StatelessWidget {
+  /// 0..[maxVolume].
+  final double volume;
+  const UoscVolumeSlider({super.key, required this.volume});
+
+  /// `volume_size`.
+  static const width = 40.0;
+
+  /// uosc: min(size * 8, 80 % of the room between the bars), less the
+  /// mute button (one [width]) below it.
+  static double heightFor(double room) => math.min(width * 8, room * 0.8) - width;
+
+  @override
+  Widget build(BuildContext context) => CustomPaint(
+    key: const ValueKey('uosc-volume-flash'),
+    painter: UoscVolumePainter(
+      volume: volume,
+      fontFamily: DefaultTextStyle.of(context).style.fontFamily ?? Theme.of(context).textTheme.bodyMedium?.fontFamily,
+    ),
+  );
+}
+
+class UoscVolumePainter extends CustomPainter {
+  final double volume;
+  final String? fontFamily;
+  const UoscVolumePainter({required this.volume, this.fontFamily});
+
+  /// `volume_border`, `border_radius`.
+  static const border = 1.0;
+  static const radius = 4.0;
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    final w = size.width, h = size.height;
+    if (w <= 0 || h <= w) return;
+    final v = volume.clamp(0.0, maxVolume);
+    final nudgeY = h - (h * (100 / maxVolume)).roundToDouble();
+    final nudge = (w * 0.18).roundToDouble();
+    final spacing = (w * 0.2).roundToDouble();
+    Path notches(double inset) {
+      final n = nudge - inset;
+      return Path()
+        ..moveTo(0, nudgeY - nudge)
+        ..lineTo(inset + n, nudgeY)
+        ..lineTo(0, nudgeY + nudge)
+        ..close()
+        ..moveTo(w, nudgeY - nudge)
+        ..lineTo(w - inset - n, nudgeY)
+        ..lineTo(w, nudgeY + nudge)
+        ..close();
+    }
+
+    final bg = RRect.fromRectAndRadius(Offset.zero & size, const Radius.circular(radius + border));
+    final volumeY = border + (h - border * 2) * (1 - math.min(v / maxVolume, 1));
+    final gauge = RRect.fromRectAndRadius(
+      Rect.fromLTRB(border, math.min(volumeY, h - border), w - border, h - border),
+      const Radius.circular(radius),
+    );
+    // The notches cut into both.
+    canvas.save();
+    canvas.clipPath(
+      Path()
+        ..fillType = PathFillType.evenOdd
+        ..addRect(Offset.zero & size)
+        ..addPath(notches(0), Offset.zero),
+    );
+    canvas.drawPath(
+      Path()
+        ..fillType = PathFillType.evenOdd
+        ..addRRect(bg)
+        ..addRRect(gauge),
+      Paint()..color = Colors.black.withValues(alpha: 0.9),
+    );
+    canvas.restore();
+    canvas.save();
+    canvas.clipPath(
+      Path()
+        ..fillType = PathFillType.evenOdd
+        ..addRect(Offset.zero & size)
+        ..addPath(notches(border), Offset.zero),
+    );
+    canvas.drawRRect(gauge, Paint()..color = Colors.white);
+    canvas.restore();
+
+    // round(volume * 10) / 10, as Lua prints it ("85", "85.5").
+    final tenths = (v * 10).round();
+    final text = tenths % 10 == 0 ? '${tenths ~/ 10}' : (tenths / 10).toString();
+    final fontSize = (w * 0.6 - text.length * (w / 20)).roundToDouble();
+    TextPainter label(Color color) => TextPainter(
+      text: TextSpan(
+        text: text,
+        style: TextStyle(fontFamily: fontFamily, fontSize: fontSize, height: 1, color: color),
+      ),
+      textDirection: TextDirection.ltr,
+    )..layout();
+    final dark = label(Colors.black), light = label(Colors.white);
+    final at = Offset((w - dark.width) / 2, h - spacing - dark.height);
+    canvas.save();
+    canvas.clipRRect(gauge);
+    dark.paint(canvas, at);
+    canvas.restore();
+    canvas.save();
+    canvas.clipPath(
+      Path()
+        ..fillType = PathFillType.evenOdd
+        ..addRect(Offset.zero & size)
+        ..addRRect(gauge),
+    );
+    light.paint(canvas, at);
+    canvas.restore();
+  }
+
+  @override
+  bool shouldRepaint(UoscVolumePainter old) => old.volume != volume || old.fontFamily != fontFamily;
+}

apps/desktop/lib/src/controls/volume.dart

@@ -0,0 +1,317 @@
+import 'dart:async';
+
+import 'package:flutter/foundation.dart' show ValueListenable;
+import 'package:flutter/gestures.dart';
+import 'package:flutter/material.dart';
+import 'package:media_kit/media_kit.dart';
+
+import '../playback/playback_controller.dart' show PlaybackController;
+import '../widgets/app_menu.dart' show AppGlass;
+
+/// The player's top volume (mpv's `volume-max`): past 100 % mpv amplifies.
+const maxVolume = PlaybackController.maxVolume * 1.0;
+
+/// The part of the volume bar above 100 %.
+const boostColor = Color(0xFFFFB74D);
+
+/// One wheel notch or arrow key.
+const volumeStep = 5.0;
+
+/// [volume] moved by [delta] (wheel, keys), kept within 0..[maxVolume].
+double stepVolume(double volume, double delta) => (volume + delta).clamp(0.0, maxVolume);
+
+/// Turns wheel deltas into volume steps: a mouse notch (a big delta) is
+/// one step, small smooth-scroll deltas add up to one. Mostly horizontal
+/// scrolls (Shift+wheel, sideways pans) are no steps.
+class WheelSteps {
+  // Flutter makes a notch 53 px on Linux, 60 on Windows (3 lines).
+  static const _notch = 50.0;
+  double _sum = 0;
+
+  /// Whether [e] is a vertical scroll (the only kind that steps).
+  static bool vertical(PointerSignalEvent e) =>
+      e is PointerScrollEvent && e.scrollDelta.dy != 0 && e.scrollDelta.dy.abs() > e.scrollDelta.dx.abs();
+
+  /// +1 louder (wheel up), -1 quieter, 0 not a step yet.
+  int take(PointerScrollEvent e) {
+    final dy = e.scrollDelta.dy;
+    if (dy.abs() >= _notch) {
+      _sum = 0;
+      return dy < 0 ? 1 : -1;
+    }
+    if (_sum != 0 && _sum.sign != dy.sign) _sum = 0;
+    _sum += dy;
+    if (_sum.abs() < _notch) return 0;
+    final step = _sum < 0 ? 1 : -1;
+    _sum = 0;
+    return step;
+  }
+
+  /// Claims [e] if it is a vertical scroll that nothing under the mouse
+  /// claimed first (a list, a menu), then calls [onStep] per step.
+  void handle(PointerSignalEvent e, ValueChanged<int> onStep) {
+    if (!vertical(e)) return;
+    GestureBinding.instance.pointerSignalResolver.register(e, (event) {
+      final step = take(event as PointerScrollEvent);
+      if (step != 0) onStep(step);
+    });
+  }
+}
+
+/// The wheel anywhere over [child] steps the volume ([onStep]: +1 / -1),
+/// unless something under the mouse scrolls (it claims the event first)
+/// or [enabled] is off.
+class VolumeWheel extends StatefulWidget {
+  final ValueChanged<int> onStep;
+  final bool enabled;
+  final Widget child;
+  const VolumeWheel({super.key, required this.onStep, this.enabled = true, required this.child});
+
+  @override
+  State<VolumeWheel> createState() => _VolumeWheelState();
+}
+
+class _VolumeWheelState extends State<VolumeWheel> {
+  final _steps = WheelSteps();
+
+  @override
+  Widget build(BuildContext context) => Listener(
+    onPointerSignal: (e) {
+      if (widget.enabled) _steps.handle(e, widget.onStep);
+    },
+    child: widget.child,
+  );
+}
+
+/// Shows [builder] for a second after each [trigger] tick (a wheel or
+/// key volume step), fading in and out; ignores the mouse.
+class VolumeFlash extends StatefulWidget {
+  final ValueListenable<int> trigger;
+  final WidgetBuilder builder;
+  const VolumeFlash({super.key, required this.trigger, required this.builder});
+
+  /// uosc's `flash_duration`.
+  static const hold = Duration(seconds: 1);
+
+  @override
+  State<VolumeFlash> createState() => _VolumeFlashState();
+}
+
+class _VolumeFlashState extends State<VolumeFlash> {
+  bool _on = false;
+  Timer? _timer;
+
+  @override
+  void initState() {
+    super.initState();
+    widget.trigger.addListener(_flash);
+  }
+
+  @override
+  void didUpdateWidget(VolumeFlash old) {
+    super.didUpdateWidget(old);
+    if (old.trigger != widget.trigger) {
+      old.trigger.removeListener(_flash);
+      widget.trigger.addListener(_flash);
+    }
+  }
+
+  @override
+  void dispose() {
+    widget.trigger.removeListener(_flash);
+    _timer?.cancel();
+    super.dispose();
+  }
+
+  void _flash() {
+    if (!mounted) return;
+    setState(() => _on = true);
+    _timer?.cancel();
+    _timer = Timer(VolumeFlash.hold, () {
+      if (mounted) setState(() => _on = false);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) => IgnorePointer(
+    child: AnimatedOpacity(
+      duration: const Duration(milliseconds: 150),
+      opacity: _on ? 1 : 0,
+      child: _on || _timer != null ? widget.builder(context) : const SizedBox.shrink(),
+    ),
+  );
+}
+
+/// The standard design's volume readout for [VolumeFlash]: a glass pill
+/// (the player's pill look) with the icon, a [VolumeBar] and the
+/// percentage.
+class VolumeReadout extends StatelessWidget {
+  final double volume;
+  const VolumeReadout({super.key, required this.volume});
+
+  @override
+  Widget build(BuildContext context) {
+    final v = volume.clamp(0.0, maxVolume);
+    return AppGlass.pill(
+      key: const ValueKey('volume-readout'),
+      child: Padding(
+        padding: const EdgeInsets.fromLTRB(12, 4, 14, 4),
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Icon(
+              v <= 0 ? Icons.volume_off : (v < 50 ? Icons.volume_down : Icons.volume_up),
+              size: 20,
+              color: v > 100 ? boostColor : Colors.white,
+            ),
+            const SizedBox(width: 8),
+            VolumeBar(volume: v, onChanged: (_) {}, width: 96),
+            const SizedBox(width: 10),
+            SizedBox(
+              width: 44,
+              child: Text(
+                '${v.round()} %',
+                textAlign: TextAlign.right,
+                style: const TextStyle(color: Colors.white, fontSize: 13, fontFeatures: [FontFeature.tabularFigures()]),
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+/// A thin volume track over 0..[maxVolume]: filled up to the volume, the
+/// part above 100 % in [boostColor], a tick at 100 %. Click or drag sets
+/// it.
+class VolumeBar extends StatelessWidget {
+  final double volume;
+  final ValueChanged<double> onChanged;
+  final double width;
+  final Color color;
+  final Color trackColor;
+  const VolumeBar({
+    super.key,
+    required this.volume,
+    required this.onChanged,
+    this.width = 64,
+    this.color = Colors.white,
+    this.trackColor = Colors.white30,
+  });
+
+  @override
+  Widget build(BuildContext context) {
+    void at(double x) => onChanged((x / width * maxVolume).clamp(0.0, maxVolume).roundToDouble());
+    return GestureDetector(
+      behavior: HitTestBehavior.opaque,
+      onTapDown: (e) => at(e.localPosition.dx),
+      onHorizontalDragUpdate: (e) => at(e.localPosition.dx),
+      child: SizedBox(
+        width: width,
+        height: 24,
+        child: CustomPaint(painter: _VolumePainter(volume.clamp(0.0, maxVolume), color, trackColor)),
+      ),
+    );
+  }
+}
+
+class _VolumePainter extends CustomPainter {
+  final double volume;
+  final Color color, trackColor;
+  _VolumePainter(this.volume, this.color, this.trackColor);
+
+  @override
+  void paint(Canvas canvas, Size size) {
+    final y = size.height / 2;
+    double x(double v) => size.width * v / maxVolume;
+    final line = Paint()
+      ..strokeWidth = 3
+      ..strokeCap = StrokeCap.round;
+    canvas.drawLine(Offset(0, y), Offset(size.width, y), line..color = trackColor);
+    final full = x(100);
+    canvas.drawLine(
+      Offset(full, y - 5),
+      Offset(full, y + 5),
+      Paint()
+        ..color = trackColor
+        ..strokeWidth = 1.5,
+    );
+    if (volume > 0) canvas.drawLine(Offset(0, y), Offset(x(volume.clamp(0, 100)), y), line..color = color);
+    if (volume > 100) canvas.drawLine(Offset(full, y), Offset(x(volume), y), line..color = boostColor);
+    canvas.drawCircle(Offset(x(volume), y), 5, Paint()..color = volume > 100 ? boostColor : color);
+  }
+
+  @override
+  bool shouldRepaint(_VolumePainter old) => old.volume != volume || old.color != color || old.trackColor != trackColor;
+}
+
+/// Volume for the standard bar (instead of media_kit's, which stops at
+/// 100): the icon mutes / unmutes, hovering shows a [VolumeBar], the
+/// wheel steps [volumeStep].
+class VolumeButton extends StatefulWidget {
+  final Player player;
+  final FocusNode? focusNode;
+  const VolumeButton({super.key, required this.player, this.focusNode});
+
+  @override
+  State<VolumeButton> createState() => _VolumeButtonState();
+}
+
+class _VolumeButtonState extends State<VolumeButton> {
+  final _steps = WheelSteps();
+  bool _hover = false;
+  double _beforeMute = 100;
+
+  @override
+  Widget build(BuildContext context) {
+    final player = widget.player;
+    return StreamBuilder<double>(
+      stream: player.stream.volume,
+      initialData: player.state.volume,
+      builder: (context, snap) {
+        final v = snap.data ?? 100;
+        return MouseRegion(
+          onEnter: (_) => setState(() => _hover = true),
+          onExit: (_) => setState(() => _hover = false),
+          child: Listener(
+            // Claimed here, so the player's own wheel handler skips it.
+            onPointerSignal: (e) =>
+                _steps.handle(e, (step) => player.setVolume(stepVolume(player.state.volume, step * volumeStep))),
+            child: Row(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                const SizedBox(width: 4),
+                IconButton(
+                  key: const ValueKey('volume-button'),
+                  focusNode: widget.focusNode,
+                  tooltip: 'Volume ${v.round()} %',
+                  iconSize: 22,
+                  color: Colors.white,
+                  onPressed: () {
+                    if (v > 0) {
+                      _beforeMute = v;
+                      player.setVolume(0);
+                    } else {
+                      player.setVolume(_beforeMute <= 0 ? 100 : _beforeMute);
+                    }
+                  },
+                  icon: Icon(v <= 0 ? Icons.volume_off : (v < 50 ? Icons.volume_down : Icons.volume_up)),
+                ),
+                AnimatedSize(
+                  duration: const Duration(milliseconds: 150),
+                  child: _hover
+                      ? Padding(
+                          padding: const EdgeInsets.only(left: 4, right: 12),
+                          child: VolumeBar(volume: v, onChanged: player.setVolume),
+                        )
+                      : const SizedBox.shrink(),
+                ),
+              ],
+            ),
+          ),
+        );
+      },
+    );
+  }
+}

apps/desktop/lib/src/files/ui/file_tiles.dart

@@ -10,9 +10,6 @@ import 'thumb.dart';
 // The Files page's rows and cards: a series header, an episode row (also
 // used for Recent), a loose-video card, and the empty states.
 
-/// Shown on play controls while there is nobody to watch with.
-const offlinePlayHint = 'Join or host to watch';
-
 /// What a play control is doing right now.
 enum PlayState { idle, starting, playing }
 
@@ -28,14 +25,14 @@ String parentName(String path) => baseName(File(path).parent.path);
 /// Cleaned title of a loose video: `Title (2019)`.
 String cleanTitle(ParsedName p) => p.year == null ? p.series : '${p.series} (${p.year})';
 
-/// Disabled with [offlinePlayHint] when [onTap] is null because offline.
-Widget _offlineTip(bool offline, Widget child) =>
-    offline ? Tooltip(message: offlinePlayHint, child: child) : child;
-
 class SeriesHeader extends StatelessWidget {
   final SeriesGroup group;
   final ThumbCache thumbs;
-  const SeriesHeader({super.key, required this.group, required this.thumbs});
+  /// Its episodes are listed below; [onTap] opens or closes them.
+  final bool expanded;
+  final VoidCallback? onTap;
+  const SeriesHeader(
+      {super.key, required this.group, required this.thumbs, this.expanded = true, this.onTap});
 
   @override
   Widget build(BuildContext context) {
@@ -49,7 +46,12 @@ class SeriesHeader extends StatelessWidget {
       ?first.parsed.group,
     ].join(' · ');
     return Padding(
-      padding: const EdgeInsets.only(top: 18, bottom: 4),
+      padding: const EdgeInsets.only(top: 14),
+      child: InkWell(
+        onTap: onTap,
+        borderRadius: BorderRadius.circular(10),
+        child: Padding(
+          padding: const EdgeInsets.symmetric(vertical: 4),
           child: Row(
             children: [
               ClipRRect(
@@ -76,8 +78,17 @@ class SeriesHeader extends StatelessWidget {
                   ],
                 ),
               ),
+              if (onTap != null)
+                AnimatedRotation(
+                  turns: expanded ? 0.5 : 0,
+                  duration: const Duration(milliseconds: 200),
+                  child: Icon(Icons.expand_more, color: scheme.onSurfaceVariant),
+                ),
+              const SizedBox(width: 8),
             ],
           ),
+        ),
+      ),
     );
   }
 }
@@ -92,9 +103,8 @@ class FileRow extends StatelessWidget {
   final String? size;
   final PlayState state;
   final ThumbCache thumbs;
-  /// Null disables the row ([offline] adds the reason as a tooltip).
+  /// Null disables the row.
   final VoidCallback? onTap;
-  final bool offline;
   final bool indent;
   final Widget? trailing;
   const FileRow({
@@ -106,7 +116,6 @@ class FileRow extends StatelessWidget {
     required this.state,
     required this.thumbs,
     required this.onTap,
-    required this.offline,
     this.indent = true,
     this.trailing,
   });
@@ -130,9 +139,7 @@ class FileRow extends StatelessWidget {
       builder: (context, t, _) {
         final duration = durationText(t);
         final meta = [?duration, ?size].join(' · ');
-        return _offlineTip(
-          offline,
-          Material(
+        return Material(
           color: playing ? scheme.primary.withValues(alpha: 0.08) : Colors.transparent,
           borderRadius: BorderRadius.circular(10),
           child: InkWell(
@@ -188,7 +195,6 @@ class FileRow extends StatelessWidget {
               ),
             ),
           ),
-          ),
         );
       },
     );
@@ -205,14 +211,12 @@ class VideoCard extends StatelessWidget {
   final PlayState state;
   final ThumbCache thumbs;
   final VoidCallback? onTap;
-  final bool offline;
   const VideoCard({
     super.key,
     required this.video,
     required this.state,
     required this.thumbs,
     required this.onTap,
-    required this.offline,
   });
 
   @override
@@ -224,9 +228,7 @@ class VideoCard extends StatelessWidget {
       path: video.path,
       builder: (context, t, _) {
         final duration = durationText(t);
-        return _offlineTip(
-          offline,
-          InkWell(
+        return InkWell(
           onTap: onTap,
           borderRadius: BorderRadius.circular(12),
           child: Column(
@@ -283,7 +285,6 @@ class VideoCard extends StatelessWidget {
                   style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12)),
             ],
           ),
-          ),
         );
       },
     );

apps/desktop/lib/src/files/ui/files_page.dart

@@ -6,6 +6,7 @@ import 'package:flutter/material.dart';
 import 'package:signals/signals_flutter.dart';
 
 import '../../shell/motion.dart';
+import '../../widgets/app_menu.dart';
 import '../folder_store.dart';
 import '../name_parser.dart';
 import '../scanner.dart';
@@ -17,7 +18,8 @@ export 'thumb.dart' show ThumbnailLoader;
 // The Files source: watched folders on the left (chips on top when
 // narrow), the open one on the right grouped into series and loose
 // videos, or Recent. A folder is scanned when first opened and on Rescan;
-// scans are kept for the app session. Playing goes through [onPlay].
+// scans are kept for the app session. Series start collapsed; the ones
+// opened stay open for the app session. Playing goes through [onPlay].
 
 /// Below this width the sidebar turns into chips above the list.
 const filesNarrowWidth = 700.0;
@@ -26,22 +28,35 @@ const filesNarrowWidth = 700.0;
 final _scans = <String, FolderScan>{};
 final _running = <String, Future<FolderScan>>{};
 String? _lastOpen;
+/// Series opened this session, by `folder\nseries key`.
+final _expanded = <String>{};
+final _showRequests = ValueNotifier(0);
 
-/// Forgets the session's scans and the open folder.
+/// Opens [dir] (null: Recent) in the Files page: now if one is showing,
+/// else when it next opens.
+void showFilesFolder(String? dir) {
+  _lastOpen = dir;
+  _showRequests.value++;
+}
+
+/// Forgets the session's scans, open series and the open folder.
 @visibleForTesting
 void resetFilesPageSession() {
   _scans.clear();
   _running.clear();
+  _expanded.clear();
   _lastOpen = null;
 }
 
 class FilesPage extends StatefulWidget {
-  /// In a session: false disables playing (browsing still works).
-  final bool online;
+  /// Nobody else watches (offline or solo): no relay notice.
+  final bool solo;
   /// The file will stream from this computer through the server.
   final bool relayed;
   /// Plays [path] in the session; returns an error text, or null.
   final Future<String?> Function(String path) onPlay;
+  /// Adds [path] to Up next (right-click on a video); null: no server.
+  final Future<String?> Function(String path, {bool next})? onAddToQueue;
   final String? nowPlayingPath;
   /// Defaults to [thumbnailFor].
   final ThumbnailLoader? thumbnails;
@@ -55,9 +70,10 @@ class FilesPage extends StatefulWidget {
 
   const FilesPage({
     super.key,
-    required this.online,
+    this.solo = false,
     required this.relayed,
     required this.onPlay,
+    this.onAddToQueue,
     this.nowPlayingPath,
     this.thumbnails,
     this.scan,
@@ -73,22 +89,21 @@ class FilesPage extends StatefulWidget {
 /// A scan grouped for display, made once per scan.
 class _Library {
   final GroupedVideos grouped;
-  /// Series rows in order: a header (video null), then its episodes and
-  /// extras.
-  final List<(SeriesGroup, VideoFile?)> rows;
   final int subtitleFiles;
 
   _Library(FolderScan scan)
       : grouped = groupBySeries(scan.videos),
-        rows = [],
-        subtitleFiles = {for (final l in scan.subtitles.values) ...l}.length {
-    for (final g in grouped.series) {
-      rows.add((g, null));
-      for (final v in [...g.episodes, ...g.extras]) {
-        rows.add((g, v));
-      }
-    }
-  }
+        subtitleFiles = {for (final l in scan.subtitles.values) ...l}.length;
+
+  /// Series rows in order: a header (video null), then, for the series
+  /// [open] says, its episodes and extras.
+  List<(SeriesGroup, VideoFile?)> rows(bool Function(SeriesGroup g) open) => [
+        for (final g in grouped.series) ...[
+          (g, null),
+          if (open(g))
+            for (final v in [...g.episodes, ...g.extras]) (g, v),
+        ],
+      ];
 }
 
 final _libraries = Expando<_Library>();
@@ -107,6 +122,7 @@ class _FilesPageState extends State<FilesPage> {
   @override
   void initState() {
     super.initState();
+    _showRequests.addListener(_shown);
     _store.ensureLoaded().then((_) {
       if (!mounted) return;
       final open = _open;
@@ -118,6 +134,14 @@ class _FilesPageState extends State<FilesPage> {
     });
   }
 
+  @override
+  void dispose() {
+    _showRequests.removeListener(_shown);
+    super.dispose();
+  }
+
+  void _shown() => _select(_lastOpen);
+
   Future<FolderScan> _runScan(String dir) => (widget.scan ?? scanFolder)(dir);
 
   void _select(String? dir) {
@@ -187,7 +211,7 @@ class _FilesPageState extends State<FilesPage> {
   }
 
   Future<void> _play(String path) async {
-    if (!widget.online || _starting != null) return;
+    if (_starting != null) return;
     setState(() {
       _starting = path;
       _error = null;
@@ -216,7 +240,36 @@ class _FilesPageState extends State<FilesPage> {
           ? PlayState.playing
           : PlayState.idle;
 
-  VoidCallback? _tapOf(String path) => widget.online ? () => _play(path) : null;
+  VoidCallback _tapOf(String path) => () => _play(path);
+
+  /// Right-click on a video ([context]: its tile): Put it up, Add to
+  /// queue, Play next.
+  Future<void> _menu(BuildContext context, String path) async {
+    final add = widget.onAddToQueue;
+    if (add == null) return;
+    final pick = await showAppMenu<int>(context, items: [
+      AppMenuItem(value: 0, label: widget.solo ? 'Play' : 'Put it up'),
+      const AppMenuItem(value: 1, label: 'Add to queue'),
+      const AppMenuItem(value: 2, label: 'Play next'),
+    ]);
+    if (pick == null || !mounted) return;
+    if (pick == 0) return _play(path);
+    String? error;
+    try {
+      error = await add(path, next: pick == 2);
+    } catch (e) {
+      error = '$e';
+    }
+    if (error != null) _showError(error);
+  }
+
+  /// [child] with the right-click menu (when there is a server).
+  Widget _menuable(String path, Widget child) => widget.onAddToQueue == null
+      ? child
+      : KeyedSubtree(
+          key: ValueKey('menu:$path'),
+          child: Builder(
+              builder: (context) => GestureDetector(onSecondaryTap: () => _menu(context, path), child: child)));
 
   @override
   Widget build(BuildContext context) => LayoutBuilder(
@@ -244,9 +297,7 @@ class _FilesPageState extends State<FilesPage> {
         },
       );
 
-  Widget _browseButton(Widget Function(VoidCallback? onPressed) build) => widget.online
-      ? build(_browse)
-      : Tooltip(message: offlinePlayHint, child: build(null));
+  Widget _browseButton(Widget Function(VoidCallback? onPressed) build) => build(_browse);
 
   Widget _sidebar(BuildContext context, List<String> folders, String? open) {
     final scheme = Theme.of(context).colorScheme;
@@ -325,7 +376,7 @@ class _FilesPageState extends State<FilesPage> {
     final top = <Widget>[
       _header(context, open),
       if (narrow) _chips(folders, open),
-      if (widget.online && widget.relayed) const _RelayNotice(),
+      if (!widget.solo && widget.relayed) const _RelayNotice(),
       AnimatedSize(
         duration: easeTime,
         curve: ease,
@@ -450,15 +501,16 @@ class _FilesPageState extends State<FilesPage> {
         itemCount: recent.length,
         itemBuilder: (context, i) {
           final path = recent[i];
-          return _RecentRow(
+          return _menuable(
+              path,
+              _RecentRow(
                 key: ValueKey(path),
                 path: path,
                 state: _stateOf(path),
                 thumbs: _thumbs,
                 onTap: _tapOf(path),
-            offline: !widget.online,
                 onRemove: () => _store.removeRecent(path),
-          );
+              ));
         },
       ),
     ];
@@ -477,6 +529,8 @@ class _FilesPageState extends State<FilesPage> {
       if (scan.truncated) 'stopped after $maxScannedFiles files',
     ].join(' · ');
     final loose = lib.grouped.loose;
+    String seriesId(SeriesGroup g) => '$dir\n${g.key}';
+    final rows = lib.rows((g) => _expanded.contains(seriesId(g)));
     return [
       SliverToBoxAdapter(
         child: Wrap(
@@ -547,15 +601,25 @@ class _FilesPageState extends State<FilesPage> {
                   'It may have been moved, renamed or be on a drive that is not connected.',
                 ),
         ),
-      // Series: files whose names carry an episode number.
+      // Series: files whose names carry an episode number; a header
+      // click opens or closes its episodes.
       SliverList.builder(
-        itemCount: lib.rows.length,
+        itemCount: rows.length,
         itemBuilder: (context, i) {
-          final (group, v) = lib.rows[i];
+          final (group, v) = rows[i];
           if (v == null) {
-            return SeriesHeader(key: ValueKey('series:${group.key}'), group: group, thumbs: _thumbs);
+            final id = seriesId(group);
+            return SeriesHeader(
+              key: ValueKey('series:${group.key}'),
+              group: group,
+              thumbs: _thumbs,
+              expanded: _expanded.contains(id),
+              onTap: () => setState(() => _expanded.contains(id) ? _expanded.remove(id) : _expanded.add(id)),
+            );
           }
-          return FileRow(
+          return _menuable(
+              v.path,
+              FileRow(
                 key: ValueKey(v.path),
                 path: v.path,
                 title: v.parsed.label.isEmpty ? v.parsed.series : v.parsed.label,
@@ -564,8 +628,7 @@ class _FilesPageState extends State<FilesPage> {
                 state: _stateOf(v.path),
                 thumbs: _thumbs,
                 onTap: _tapOf(v.path),
-            offline: !widget.online,
-          );
+              ));
         },
       ),
       // Everything else (movies, clips) as a thumbnail grid.
@@ -594,14 +657,15 @@ class _FilesPageState extends State<FilesPage> {
             itemCount: loose.length,
             itemBuilder: (context, i) {
               final v = loose[i];
-              return VideoCard(
+              return _menuable(
+                  v.path,
+                  VideoCard(
                     key: ValueKey(v.path),
                     video: v,
                     state: _stateOf(v.path),
                     thumbs: _thumbs,
                     onTap: _tapOf(v.path),
-                offline: !widget.online,
-              );
+                  ));
             },
           );
         }),
@@ -617,7 +681,6 @@ class _RecentRow extends StatefulWidget {
   final PlayState state;
   final ThumbCache thumbs;
   final VoidCallback? onTap;
-  final bool offline;
   final VoidCallback onRemove;
   const _RecentRow({
     super.key,
@@ -625,7 +688,6 @@ class _RecentRow extends StatefulWidget {
     required this.state,
     required this.thumbs,
     required this.onTap,
-    required this.offline,
     required this.onRemove,
   });
 
@@ -658,7 +720,6 @@ class _RecentRowState extends State<_RecentRow> {
       state: widget.state,
       thumbs: widget.thumbs,
       onTap: missing ? null : widget.onTap,
-      offline: widget.offline && !missing,
       indent: false,
       trailing: IconButton(
         tooltip: 'Remove from recent',

apps/desktop/lib/src/jellyfin/accounts.dart

@@ -8,8 +8,6 @@ import 'package:hive_ce/hive.dart';
 import 'package:sync_relay_core/core.dart';
 
 import '../screens/home/picked_media.dart';
-import '../screens/home/ui.dart' show appName;
-import '../update/updater.dart' show appVersion;
 
 // Linked Jellyfin servers, one account per ServerId, in their own Hive box.
 //
@@ -196,6 +194,13 @@ class JellyfinAccounts extends ChangeNotifier {
   JellyfinAccount? account(String serverId) =>
       _accounts.where((a) => a.serverId == serverId).firstOrNull;
 
+  /// [itemId]'s page in the web UI of linked server [serverId] ("Open in
+  /// Jellyfin"); null when that server is not linked here.
+  String? webUrlOf(String serverId, String itemId) {
+    final a = account(serverId);
+    return a == null ? null : jellyfinWebUrl(a.baseUrl, itemId, serverId: serverId);
+  }
+
   /// The chosen default, else the first linked server.
   JellyfinAccount? get defaultAccount =>
       (_defaultServerId == null ? null : account(_defaultServerId!)) ?? _accounts.firstOrNull;
@@ -215,7 +220,8 @@ class JellyfinAccounts extends ChangeNotifier {
   String get deviceId => _deviceId;
 
   JellyfinClientInfo get clientInfo => JellyfinClientInfo(
-        client: appName,
+        // The old name on purpose: Jellyfin lists devices under it.
+        client: 'Watch Together',
         device: deviceName ?? _hostname(),
         deviceId: _deviceId.isEmpty ? 'unknown' : _deviceId,
         version: appVersion,
@@ -544,6 +550,17 @@ class JellyfinAccounts extends ChangeNotifier {
   /// Drops cached browse results (refresh button, after a pick).
   void invalidate(String serverId) => _clearMemo(serverId);
 
+  final _watched = StreamController<String>.broadcast();
+
+  /// Server ids whose watched state this app just changed (a stop report):
+  /// their cached lists are gone, and browse views reload.
+  Stream<String> get watched => _watched.stream;
+
+  void watchedChanged(String serverId) {
+    _clearMemo(serverId);
+    _watched.add(serverId);
+  }
+
   @override
   void dispose() {
     _disposed = true;

apps/desktop/lib/src/jellyfin/browse_scope.dart

@@ -6,6 +6,8 @@ import 'package:sync_relay_core/core.dart';
 
 import 'accounts.dart';
 import 'format.dart';
+import '../widgets/app_menu.dart';
+import '../widgets/copy_open.dart';
 
 /// One level of the library browser's back stack.
 sealed class BrowseRoute {
@@ -156,7 +158,14 @@ class BrowseController extends ChangeNotifier {
   final JellyfinAccounts accounts;
   /// Clock for the Continue row's age cut-off (tests pin it).
   final DateTime Function() now;
-  BrowseController(this.accounts, {this.now = DateTime.now});
+  BrowseController(this.accounts, {this.now = DateTime.now}) {
+    // Back from watching: the rows show what was just watched.
+    _watchedSub = accounts.watched.listen((id) {
+      if (!_disposed && id == serverId) dataChanged();
+    });
+  }
+
+  late final StreamSubscription<String> _watchedSub;
 
   String? _serverId;
   List<BrowseRoute> _stack = const [HomeRoute()];
@@ -258,10 +267,19 @@ class BrowseController extends ChangeNotifier {
   @override
   void dispose() {
     _disposed = true;
+    unawaited(_watchedSub.cancel());
     super.dispose();
   }
 }
 
+/// An item's title to copy: an episode with its series ("Show · Name").
+String jellyfinCopyTitle(JellyfinItem item) {
+  final series = item.seriesName;
+  return item.kind == JellyfinItemKind.episode && series != null && series.isNotEmpty
+      ? '$series · ${item.name}'
+      : item.name;
+}
+
 /// What every browser page needs, provided by [JellyfinBrowser].
 class BrowseScope extends InheritedWidget {
   final JellyfinAccounts accounts;
@@ -274,6 +292,9 @@ class BrowseScope extends InheritedWidget {
   final ValueChanged<JellyfinItem> onSelect;
   /// Double-click: put it up (a series: its next episode).
   final ValueChanged<JellyfinItem> onPutUp;
+  /// Adds it to Up next (with next: right after what plays); null: no
+  /// server (the cards' menu then only copies and opens).
+  final void Function(JellyfinItem item, {bool next})? onAddToQueue;
   /// Home shows the library chips itself (the Library tab has them in its
   /// header instead).
   final bool libraryStrip;
@@ -287,6 +308,7 @@ class BrowseScope extends InheritedWidget {
     required this.selectedItemId,
     required this.onSelect,
     required this.onPutUp,
+    this.onAddToQueue,
     this.libraryStrip = true,
     required super.child,
   });
@@ -296,6 +318,33 @@ class BrowseScope extends InheritedWidget {
 
   void onOpen(BrowseRoute route) => controller.open(route);
 
+  /// Right-click on a card ([context]: the card): Put it up, Add to queue,
+  /// Play next (playable, in a server), Copy title, Open in Jellyfin.
+  Future<void> cardMenu(BuildContext context, JellyfinItem item) async {
+    final queue = isSelectable(item) ? onAddToQueue : null;
+    final pick = await showAppMenu<int>(context, items: [
+      if (queue != null) ...const [
+        AppMenuItem(value: 0, label: 'Put it up'),
+        AppMenuItem(value: 1, label: 'Add to queue'),
+        AppMenuItem(value: 2, label: 'Play next'),
+      ],
+      const AppMenuItem(value: 3, label: ReuseText.copyTitle),
+      const AppMenuItem(value: 4, label: ReuseText.openInJellyfin),
+    ]);
+    switch (pick) {
+      case 0:
+        onPutUp(item);
+      case 1:
+        queue!(item);
+      case 2:
+        queue!(item, next: true);
+      case 3:
+        await copyToClipboard(jellyfinCopyTitle(item), done: 'Title copied');
+      case 4:
+        await openLink(jellyfinWebUrl(client.baseUrl, item.id, serverId: account.serverId));
+    }
+  }
+
   /// Cached browse call on this server.
   Future<T> load<T>(String key, Future<T> Function(JellyfinClient c) fn) =>
       accounts.cached(account.serverId, key, () => fn(client));

apps/desktop/lib/src/jellyfin/browser.dart

@@ -30,6 +30,8 @@ class JellyfinBrowser extends StatefulWidget {
   final JellyfinSelection? selected;
   final ValueChanged<JellyfinSelection> onSelect;
   final ValueChanged<JellyfinSelection> onPutUp;
+  /// Right-click on a card: Add to queue / Play next; null: no server.
+  final void Function(JellyfinSelection item, {bool next})? onAddToQueue;
   final VoidCallback? onOpenIntegrations;
   final Duration searchDebounce;
   /// Opens here instead of the remembered location (the series of the
@@ -43,6 +45,7 @@ class JellyfinBrowser extends StatefulWidget {
     required this.accounts,
     required this.onSelect,
     required this.onPutUp,
+    this.onAddToQueue,
     this.controller,
     this.selected,
     this.onOpenIntegrations,
@@ -221,6 +224,10 @@ class _JellyfinBrowserState extends State<JellyfinBrowser> {
       selectedItemId: sel != null && sel.serverId == account.serverId ? sel.itemId : null,
       onSelect: (item) => widget.onSelect(JellyfinSelection(account.serverId, item.id, item)),
       onPutUp: (item) => widget.onPutUp(JellyfinSelection(account.serverId, item.id, item)),
+      onAddToQueue: widget.onAddToQueue == null
+          ? null
+          : (item, {next = false}) =>
+              widget.onAddToQueue!(JellyfinSelection(account.serverId, item.id, item), next: next),
       libraryStrip: widget.libraryStrip,
       child: Focus(
         onKeyEvent: _onKey,

apps/desktop/lib/src/jellyfin/cards.dart

@@ -186,6 +186,7 @@ class _MediaCardState extends State<MediaCard> {
         focusColor: Colors.transparent,
         hoverColor: Colors.transparent,
         onTap: () => _tap(scope),
+        onSecondaryTap: () => scope.cardMenu(context, item),
         onHover: (h) => setState(() => _hover = h),
         onFocusChange: (f) => setState(() => _focus = f),
         child: Column(

apps/desktop/lib/src/jellyfin/details_panel.dart

@@ -2,6 +2,8 @@ import 'package:flutter/material.dart';
 import 'package:sync_relay_core/core.dart';
 
 import '../shell/motion.dart';
+import '../widgets/app_menu.dart';
+import '../widgets/copy_open.dart';
 import 'accounts.dart';
 import 'browse_scope.dart';
 import 'cards.dart' show doubleClickTime, kindIcon;
@@ -32,26 +34,30 @@ typedef _Data = ({
 });
 
 /// The selected card's details, at the right of the library: banner,
-/// title, meta, "Put it up · S1E3" (a disabled Play with [offlineHint]
-/// offline), mark watched / unwatched, remove from Continue, overview and,
+/// title, meta, "Put it up · S1E3" ("Play · S1E3" when watching
+/// [solo]), mark watched / unwatched, remove from Continue, overview and,
 /// for a series or an episode, the episode list (click picks which
 /// episode goes up, double-click puts it up). Reloads when the
 /// [controller]'s data version moves.
 class JellyfinDetailsPanel extends StatefulWidget {
   final BrowseController controller;
   final JellyfinSelection selection;
-  /// Null when online; else why nothing can go up.
-  final String? offlineHint;
+  /// Nobody else watches (offline or solo): the button says Play.
+  final bool solo;
   /// Puts [item] (playable) up; returns an error text, or null when sent.
   final Future<String?> Function(JellyfinSelection item) onPutUp;
+  /// Adds [item] to Up next (with next: right after what plays); null: no
+  /// server, no queue actions.
+  final Future<String?> Function(JellyfinSelection item, {bool next})? onAddToQueue;
   final VoidCallback onClose;
   const JellyfinDetailsPanel({
     super.key,
     required this.controller,
     required this.selection,
     required this.onPutUp,
+    this.onAddToQueue,
     required this.onClose,
-    this.offlineHint,
+    this.solo = false,
   });
 
   @override
@@ -104,7 +110,7 @@ class _JellyfinDetailsPanelState extends State<JellyfinDetailsPanel> {
       _cached('episodes:$seriesId:$seasonId', (c) => c.episodes(seriesId, seasonId: seasonId));
 
   Future<void> _putUp(JellyfinItem target) async {
-    if (_busy || widget.offlineHint != null) return;
+    if (_busy) return;
     setState(() {
       _busy = true;
       _error = null;
@@ -122,6 +128,55 @@ class _JellyfinDetailsPanelState extends State<JellyfinDetailsPanel> {
     });
   }
 
+  Future<void> _queue(JellyfinItem target, {bool next = false}) async {
+    final add = widget.onAddToQueue;
+    if (add == null || _busy) return;
+    setState(() {
+      _busy = true;
+      _error = null;
+    });
+    String? error;
+    try {
+      error = await add(JellyfinSelection(_serverId, target.id, target), next: next);
+    } catch (e) {
+      error = '$e';
+    }
+    if (!mounted) return;
+    setState(() {
+      _busy = false;
+      _error = error;
+    });
+  }
+
+  /// Right-click on an episode ([context]: its row): Put it up, Add to
+  /// queue, Play next (in a server), Copy title, Open in Jellyfin.
+  Future<void> _episodeMenu(BuildContext context, JellyfinItem e) async {
+    final queue = widget.onAddToQueue != null;
+    if (queue) setState(() => _targetId = e.id);
+    final client = _client;
+    final pick = await showAppMenu<int>(context, items: [
+      if (queue) ...[
+        AppMenuItem(value: 0, label: widget.solo ? 'Play' : 'Put it up'),
+        const AppMenuItem(value: 1, label: 'Add to queue'),
+        const AppMenuItem(value: 2, label: 'Play next'),
+      ],
+      const AppMenuItem(value: 3, label: ReuseText.copyTitle),
+      if (client != null) const AppMenuItem(value: 4, label: ReuseText.openInJellyfin),
+    ]);
+    switch (pick) {
+      case 0:
+        await _putUp(e);
+      case 1:
+        await _queue(e);
+      case 2:
+        await _queue(e, next: true);
+      case 3:
+        await copyToClipboard(jellyfinCopyTitle(e), done: 'Title copied');
+      case 4:
+        await openLink(jellyfinWebUrl(client!.baseUrl, e.id, serverId: _serverId));
+    }
+  }
+
   /// Runs a watched-state change, then lets every row reload.
   Future<void> _change(Future<void> Function(JellyfinClient c) action) async {
     final c = _client;
@@ -253,14 +308,8 @@ class _JellyfinDetailsPanelState extends State<JellyfinDetailsPanel> {
       if (shown.communityRating != null) '★ ${shown.communityRating!.toStringAsFixed(1)}',
       if (!isSeries && shown.userData.played) 'Watched',
     ].join(' · ');
-    final hint = widget.offlineHint;
-    final label = playable == null
-        ? (hint == null ? 'Put it up' : 'Play')
-        : hint != null
-            ? 'Play'
-            : isSeries
-                ? 'Put it up · ${playable.episodeLabel ?? playable.name}'
-                : 'Put it up';
+    final verb = widget.solo ? 'Play' : 'Put it up';
+    final label = playable != null && isSeries ? '$verb · ${playable.episodeLabel ?? playable.name}' : verb;
     final inContinue = playable != null &&
         (playable.userData.isResumable || _c.continueKeys.contains(continueKey(playable)));
     final left = playable == null ? null : timeLeft(playable);
@@ -307,12 +356,22 @@ class _JellyfinDetailsPanelState extends State<JellyfinDetailsPanel> {
                 children: [
                   FilledButton.icon(
                     key: const ValueKey('details-put-up'),
-                    onPressed: playable == null || hint != null || _busy ? null : () => _putUp(playable),
+                    onPressed: playable == null || _busy ? null : () => _putUp(playable),
                     icon: _busy
                         ? const SizedBox.square(dimension: 16, child: CircularProgressIndicator(strokeWidth: 2))
                         : const Icon(Icons.play_arrow),
                     label: Text(label, overflow: TextOverflow.ellipsis),
                   ),
+                  if (playable != null && widget.onAddToQueue != null)
+                    GestureDetector(
+                      onSecondaryTap: _busy ? null : () => _queue(playable, next: true),
+                      child: IconButton(
+                        key: const ValueKey('details-add-queue'),
+                        onPressed: _busy ? null : () => _queue(playable),
+                        tooltip: 'Add to queue (right-click: play next)',
+                        icon: const Icon(Icons.playlist_add_rounded),
+                      ),
+                    ),
                   if (playable != null)
                     IconButton(
                       key: const ValueKey('details-watched'),
@@ -334,14 +393,21 @@ class _JellyfinDetailsPanelState extends State<JellyfinDetailsPanel> {
                       onPressed: () => _c.open(SeriesRoute(d.series!, seasonId: seasonId)),
                       icon: const Icon(Icons.open_in_new),
                     ),
+                  if (client != null)
+                    IconButton(
+                      key: const ValueKey('details-open-jellyfin'),
+                      tooltip: ReuseText.openInJellyfin,
+                      onPressed: () => openLink(jellyfinWebUrl(client.baseUrl, shown.id, serverId: _serverId)),
+                      icon: const Icon(Icons.open_in_browser_rounded),
+                    ),
                 ],
               ),
-              if (hint != null || _error != null) ...[
+              if (_error != null) ...[
                 const SizedBox(height: 6),
                 Text(
-                  _error ?? hint!,
+                  _error!,
                   key: const ValueKey('details-hint'),
-                  style: t.bodySmall?.copyWith(color: _error != null ? scheme.error : Colors.grey),
+                  style: t.bodySmall?.copyWith(color: scheme.error),
                 ),
               ],
               if (isSeries && playable != null) ...[
@@ -398,18 +464,14 @@ class _JellyfinDetailsPanelState extends State<JellyfinDetailsPanel> {
       children: [
         const Expanded(child: Text('Episodes', style: TextStyle(fontWeight: FontWeight.w600))),
         if (seasons.length > 1)
-          DropdownButton<String>(
+          Flexible(
+            child: AppSelect<String?>(
               key: const ValueKey('details-season'),
               value: seasonId,
-            isDense: true,
-            underline: const SizedBox.shrink(),
-            borderRadius: BorderRadius.circular(10),
-            items: [
-              for (final s in seasons)
-                DropdownMenuItem(value: s.id, child: Text(s.name, overflow: TextOverflow.ellipsis)),
-            ],
+              items: [for (final s in seasons) (s.id, s.name)],
               onChanged: (id) => setState(() => _seasonId = id),
             ),
+          ),
       ],
     );
   }
@@ -422,10 +484,12 @@ class _JellyfinDetailsPanelState extends State<JellyfinDetailsPanel> {
     return Material(
       color: isTarget ? scheme.primary.withValues(alpha: 0.10) : Colors.transparent,
       borderRadius: BorderRadius.circular(8),
-      child: InkWell(
+      // The row's own context: its menu opens at the row.
+      child: Builder(builder: (context) => InkWell(
         key: ValueKey('details-episode-${e.id}'),
         borderRadius: BorderRadius.circular(8),
         onTap: () => _tapEpisode(e),
+        onSecondaryTap: () => _episodeMenu(context, e),
         child: Padding(
           padding: const EdgeInsets.symmetric(vertical: 5, horizontal: 4),
           child: Row(
@@ -470,7 +534,7 @@ class _JellyfinDetailsPanelState extends State<JellyfinDetailsPanel> {
             ],
           ),
         ),
-      ),
+      )),
     );
   }
 }

apps/desktop/lib/src/jellyfin/home_page.dart

@@ -3,6 +3,7 @@ import 'package:signals/signals_flutter.dart';
 import 'package:sync_relay_core/core.dart';
 
 import '../state/settings.dart';
+import '../widgets/app_menu.dart';
 import 'browse_scope.dart';
 import 'cards.dart';
 import 'home_rows.dart';
@@ -184,18 +185,18 @@ class _LatestRow extends StatelessWidget {
                   onPressed: () => scope.onOpen(LibraryRoute(view, sort: 'added')),
                   child: const Text('Show all'),
                 ),
-                PopupMenuButton<void>(
+                AppMenuButton<bool>(
                   key: ValueKey('latest-menu-${view.id}'),
                   tooltip: 'Row options',
-                  icon: const Icon(Icons.more_vert, size: 18),
-                  itemBuilder: (context) => [
-                    CheckedPopupMenuItem(
+                  items: () => [
+                    AppMenuItem(
                       key: const ValueKey('hide-rereleases'),
+                      value: !hide,
                       checked: hide,
-                      onTap: () => AppSettings.instance.setHideReReleases(!hide),
-                      child: const Text('Hide re-releases in Latest'),
+                      label: 'Hide re-releases in Latest',
                     ),
                   ],
+                  onSelected: AppSettings.instance.setHideReReleases,
                 ),
               ],
             ),

apps/desktop/lib/src/jellyfin/picker_source.dart

@@ -7,26 +7,31 @@ import 'browser.dart';
 import 'sign_in_panel.dart';
 
 /// The Library's Jellyfin source: the library browser once a server is
-/// linked, else an inline add-server panel.
+/// linked, else [empty] (default: an inline add-server panel).
 class JellyfinPickerSource extends StatefulWidget {
   final JellyfinAccounts accounts;
   final BrowseController? controller;
   final JellyfinSelection? selected;
   final ValueChanged<JellyfinSelection> onSelect;
   final ValueChanged<JellyfinSelection> onPutUp;
+  final void Function(JellyfinSelection item, {bool next})? onAddToQueue;
   final VoidCallback? onOpenIntegrations;
   final BrowseStart? start;
   final bool libraryStrip;
+  /// Shown while no server is linked.
+  final WidgetBuilder? empty;
   const JellyfinPickerSource({
     super.key,
     this.start,
     required this.accounts,
     required this.onSelect,
     required this.onPutUp,
+    this.onAddToQueue,
     this.controller,
     this.selected,
     this.onOpenIntegrations,
     this.libraryStrip = true,
+    this.empty,
   });
 
   @override
@@ -49,6 +54,7 @@ class _JellyfinPickerSourceState extends State<JellyfinPickerSource> {
         if (!a.loaded) {
           return const Center(child: CircularProgressIndicator(strokeWidth: 2));
         }
+        if (a.isEmpty && widget.empty != null) return widget.empty!(context);
         if (a.isEmpty) return _LinkFirst(accounts: a, onOpenIntegrations: widget.onOpenIntegrations);
         return JellyfinBrowser(
           key: const ValueKey('media-jellyfin'),
@@ -57,6 +63,7 @@ class _JellyfinPickerSourceState extends State<JellyfinPickerSource> {
           selected: widget.selected,
           onSelect: widget.onSelect,
           onPutUp: widget.onPutUp,
+          onAddToQueue: widget.onAddToQueue,
           onOpenIntegrations: widget.onOpenIntegrations,
           start: widget.start,
           libraryStrip: widget.libraryStrip,

apps/desktop/lib/src/jellyfin/progress.dart

@@ -1,4 +1,5 @@
 import 'dart:async';
+import 'dart:math' as math;
 
 import 'package:flutter/foundation.dart';
 import 'package:sync_relay_core/core.dart';
@@ -24,6 +25,14 @@ class PlayerSnapshot {
 /// go out one after another; a failure is logged and handed to [onError]
 /// (the session shows one quiet toast) and never touches playback. A 401
 /// calls [onUnauthorized] and ends reporting.
+///
+/// Watched or not is [WatchSession]'s rule, not Jellyfin's position
+/// percentages (see ARCHITECTURE.md "Jellyfin in a session"): an item
+/// played before ([playedBefore]) stays played (re-marked after Playing,
+/// Progress without a position, Stopped without one, then marked played
+/// again); otherwise Progress leaves the position out past
+/// [_noPositionFrom] of the runtime so Jellyfin cannot mark it played on
+/// its own, and Stopped carries what the rule says.
 class JellyfinProgressReporter {
   final JellyfinClient client;
   final String itemId;
@@ -34,20 +43,41 @@ class JellyfinProgressReporter {
   final void Function(Object error)? onError;
   final VoidCallback? onUnauthorized;
 
+  /// What this viewer watched of the item while it was open here.
+  final WatchSession watch;
+
   JellyfinProgressReporter({
     required this.client,
     required this.itemId,
     required this.source,
     required this.playSessionId,
+    bool playedBefore = false,
+    int resumeTicksBefore = 0,
     this.interval = const Duration(seconds: 10),
     this.onError,
     this.onUnauthorized,
+    this.onStopped,
     DateTime Function()? clock,
-  }) : _clock = clock ?? DateTime.now;
+  })  : _clock = clock ?? DateTime.now,
+        _keepPlayed = playedBefore,
+        _runtime = (source.runTimeTicks ?? 0) / jellyfinTicksPerSecond,
+        watch = WatchSession(
+            playedBefore: playedBefore, resumeBefore: resumeTicksBefore / jellyfinTicksPerSecond);
+
+  /// Past this share of the runtime Progress carries no position: Jellyfin
+  /// marks an item played past its "max resume" share (90 % by default).
+  static const _noPositionFrom = 0.85;
+
+  /// After Stopped (and a mark played) went out: the item's watched
+  /// state on the server may differ from what lists show.
+  final void Function()? onStopped;
 
   Future<void> _chain = Future.value();
   bool _playing = false;
   bool _dead = false;
+  bool _keepPlayed;
+  double _runtime;
+  double? _endingStart;
   PlayerSnapshot? _last;
   DateTime? _lastAt;
   DateTime? _lastSentAt;
@@ -55,13 +85,23 @@ class JellyfinProgressReporter {
   /// Between [start] and [stop].
   bool get active => _playing && !_dead;
 
+  /// The item counts as played here (before, or by the rule at a stop).
+  bool get keepsPlayed => _keepPlayed;
+
+  /// The player's duration (used when Jellyfin gave no runtime) and where
+  /// the ending starts (Outro segment / ED chapter), seconds.
+  void timeline({double duration = 0, double? endingStart}) {
+    if ((source.runTimeTicks ?? 0) <= 0 && duration > 0) _runtime = duration;
+    _endingStart = endingStart;
+  }
+
   /// The report body for [s]: ticks, pause, and mpv's aid/sid mapped to
   /// Jellyfin stream indices (-1 = subtitles off).
-  JellyfinPlaybackReport reportFor(PlayerSnapshot s) => JellyfinPlaybackReport(
+  JellyfinPlaybackReport reportFor(PlayerSnapshot s, {bool withPosition = true}) => JellyfinPlaybackReport(
         itemId: itemId,
         mediaSourceId: source.id,
         playSessionId: playSessionId,
-        positionTicks: (s.position * jellyfinTicksPerSecond).round(),
+        positionTicks: withPosition ? _ticks(s.position) : null,
         isPaused: s.paused,
         audioStreamIndex: s.aid == null
             ? null
@@ -71,13 +111,24 @@ class JellyfinProgressReporter {
             : source.jellyfinIndexForMpvTrack(JellyfinStreamType.subtitle, s.sid!),
       );
 
+  static int _ticks(double secs) => (secs * jellyfinTicksPerSecond).round();
+
+  /// Progress may carry the position: not for a played item, not without
+  /// a runtime and not near the end (either would let Jellyfin decide).
+  bool _progressPosition(double position) =>
+      !_keepPlayed && _runtime > 0 && position < _noPositionFrom * _runtime;
+
   /// Playing: once the media is open. Again after [stop] (played to the
-  /// end, then someone seeked back) starts reporting anew.
+  /// end, then someone seeked back) starts reporting anew. A played item
+  /// is marked played again right after (Jellyfin up to 10.11 clears it
+  /// on Playing).
   void start(PlayerSnapshot s) {
     if (_playing || _dead) return;
     _playing = true;
     _mark(s);
+    watch.sample(s.position, playing: !s.paused, at: _clock());
     _send('Playing', () => client.reportPlaybackStart(reportFor(s)));
+    if (_keepPlayed) _send('played', () => client.markPlayed(itemId));
   }
 
   /// Progress when due (see the class doc).
@@ -85,6 +136,7 @@ class JellyfinProgressReporter {
     if (!_playing || _dead) return;
     final last = _last, lastAt = _lastAt, sentAt = _lastSentAt;
     final now = _clock();
+    watch.sample(s.position, playing: !s.paused, at: now);
     var due = force || last == null || lastAt == null || sentAt == null;
     if (!due) {
       final elapsed = now.difference(lastAt).inMilliseconds / 1000;
@@ -99,16 +151,44 @@ class JellyfinProgressReporter {
     _lastAt = now;
     if (!due) return;
     _lastSentAt = now;
-    _send('Progress', () => client.reportPlaybackProgress(reportFor(s)));
+    final report = reportFor(s, withPosition: _progressPosition(s.position));
+    _send('Progress', () => client.reportPlaybackProgress(report));
   }
 
-  /// Stopped (swap, leave, kick, window close, played to the end).
+  /// Stopped (swap, leave, kick, window close, played to the end), as
+  /// [WatchSession.verdict] says: played (or kept played) -> no position,
+  /// then marked played; a peek -> the resume point from before; part way
+  /// -> the position, held under [_noPositionFrom] of the runtime.
   /// Completes when it and everything before it went out.
   Future<void> stop(PlayerSnapshot s) {
     if (!_playing || _dead) return _chain;
     _playing = false;
-    _send('Stopped', () => client.reportPlaybackStopped(reportFor(s)));
-    return _chain;
+    watch.sample(s.position, playing: !s.paused, at: _clock());
+    final v = _keepPlayed
+        ? const WatchVerdict(WatchOutcome.keepPlayed)
+        : watch.verdict(runtime: _runtime, endingStart: _endingStart);
+    debugPrint('jellyfin $itemId: $v (covered ${watch.covered.round()} s of ${_runtime.round()} s)');
+    final int? ticks;
+    switch (v.outcome) {
+      case WatchOutcome.played || WatchOutcome.keepPlayed:
+        _keepPlayed = true;
+        ticks = null;
+      case WatchOutcome.peek:
+        ticks = _ticks(watch.resumeBefore);
+      case WatchOutcome.partial:
+        final at = v.resumeAt ?? s.position;
+        ticks = _ticks(_runtime > 0 ? math.min(at, _noPositionFrom * _runtime) : at);
+    }
+    final report = JellyfinPlaybackReport(
+        itemId: itemId, mediaSourceId: source.id, playSessionId: playSessionId, positionTicks: ticks);
+    _send('Stopped', () => client.reportPlaybackStopped(report));
+    if (ticks == null) {
+      _send('played', () => client.markPlayed(itemId));
+      // Marking played keeps a resume point Progress left (Continue would
+      // still list it, "3 min left"): clear it.
+      _send('resume cleared', () => client.clearResumePosition(itemId));
+    }
+    return _chain = _chain.then((_) => onStopped?.call());
   }
 
   void _mark(PlayerSnapshot s) {

apps/desktop/lib/src/jellyfin/series_page.dart

@@ -375,6 +375,7 @@ class _EpisodeTileState extends State<EpisodeTile> {
         key: ValueKey('episode-${e.id}'),
         focusColor: Colors.transparent,
         onTap: () => _tap(scope),
+        onSecondaryTap: () => scope.cardMenu(context, widget.episode),
         onHover: (h) => setState(() => _hover = h),
         onFocusChange: (f) => setState(() => _focus = f),
         child: Padding(

apps/desktop/lib/src/jellyfin/session_media.dart

@@ -318,10 +318,11 @@ Future<({EpisodeLink? previous, EpisodeLink? next})> findAdjacentEpisodes(OwnPla
   }
 }
 
-/// When the floating "Next episode" pill appears: at [endingStart] (the
+/// Where the "Next episode" pill's window starts: at [endingStart] (the
 /// ED: Jellyfin Outro segment or ED-titled chapter, see `endingRange`)
 /// when one is known inside [runtime], else the last two minutes of
-/// [runtime] (all of it for shorter media).
+/// [runtime] (all of it for shorter media). The pill shows only while the
+/// controls are up (`PillGate`), so a guessed window costs nothing.
 Duration nextPromptStart(JellyfinItem? item, Duration runtime, {Duration? endingStart}) {
   if (endingStart != null && endingStart > Duration.zero && endingStart < runtime) {
     return endingStart;
@@ -332,13 +333,13 @@ Duration nextPromptStart(JellyfinItem? item, Duration runtime, {Duration? ending
 
 /// Who performs the auto-advance swap, so several counting clients do not
 /// swap twice: the lowest member id among members that play the item with
-/// their own account (`jf[serverId] == true`, not stale). Only what every
+/// their own account (`jf[serverId] == true`, not stale, not out). Only what every
 /// client sees in `state` decides (who put the item up is not in it: a
 /// late joiner never saw that swap), so all clients agree.
 String? autoAdvanceSwapper(List<MemberView> members, String serverId) {
   final eligible = [
     for (final m in members)
-      if (!m.stale && m.jf[serverId] == true) m
+      if (!m.stale && !m.out && m.jf[serverId] == true) m
   ];
   if (eligible.isEmpty) return null;
   eligible.sort((a, b) => compareMemberIds(a.id, b.id));

apps/desktop/lib/src/platform/app_log.dart

@@ -0,0 +1,107 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:flutter/foundation.dart';
+import 'package:path_provider/path_provider.dart';
+import 'package:sync_relay_core/core.dart';
+
+import '../playback/yt_dlp_app.dart';
+import '../screens/home/ui.dart' show appName, displayVersion;
+import '../state/session_state.dart';
+
+// The app's log on disk (<app support>/logs/app-YYYY-MM-DD.log; core's
+// logging.dart writes, rotates and redacts it), debugPrint routed into it,
+// and the "Copy diagnostics" text of Settings → About.
+
+final _appLog = createLogger('app');
+
+/// The logs folder, once [startAppLogging] ran.
+String? appLogDir;
+
+/// Opens the log files and routes `debugPrint` and uncaught errors into
+/// the log. Needs Flutter's binding (path_provider).
+Future<void> startAppLogging() async {
+  try {
+    final base = await getApplicationSupportDirectory();
+    final dir = '${base.path}${Platform.pathSeparator}logs';
+    if (startLogFiles(dir) != null) appLogDir = dir;
+  } catch (e) {
+    _appLog.warning('no log files: $e');
+  }
+  // Everything the app prints for diagnosis lands in the file too (the
+  // log's console output replaces the print).
+  debugPrint = (String? message, {int? wrapWidth}) {
+    if (message == null || message.isEmpty) return;
+    final bad = RegExp(r'fail|error|crash|exception', caseSensitive: false).hasMatch(message);
+    bad ? _appLog.warning(message) : _appLog.info(message);
+  };
+  PlatformDispatcher.instance.onError = (error, stack) {
+    _appLog.severe('uncaught: $error', error, stack);
+    return false;
+  };
+  _appLog.info('$appName ${displayVersion()} on ${Platform.operatingSystem} '
+      '${Platform.operatingSystemVersion}, pid $pid, Dart ${Platform.version.split(' ').first}');
+}
+
+/// The text "Copy diagnostics" gives: versions, then the last [since] of
+/// the app log (its hosted server's records included), already redacted;
+/// with [sessionLog], the server's session log of the same hours after it
+/// (every member's shared lines and the server's, merged).
+Future<String> diagnosticsText({Duration since = const Duration(hours: 6), bool sessionLog = false}) async {
+  final b = StringBuffer()
+    ..writeln('$appName ${displayVersion()}')
+    ..writeln('OS: ${Platform.operatingSystem} ${Platform.operatingSystemVersion}')
+    ..writeln('Dart: ${Platform.version.split(' ').first}');
+  try {
+    final mpv = await SessionState.instance.coordinator.playback.mpvVersion().timeout(const Duration(seconds: 2));
+    b.writeln('mpv: ${mpv ?? 'no player yet'}');
+  } catch (_) {
+    b.writeln('mpv: unknown');
+  }
+  try {
+    final y = await AppYtDlp.instance.ytDlp.timeout(const Duration(seconds: 2));
+    final cookies = y.cookies.read(count: false);
+    b.writeln('yt-dlp: ${y.version ?? 'not ready'}${y.lastError == null ? '' : ' (${y.lastError})'}, '
+        'cookies: ${cookies == null ? 'none' : 'set'}');
+  } catch (_) {
+    b.writeln('yt-dlp: unknown');
+  }
+  final files = logFiles;
+  b.writeln('Log: ${files?.currentPath ?? 'none (console only)'}');
+  b.writeln('--- last ${since.inHours} h of the log ---');
+  b.write(files?.recent(since) ?? '');
+  if (sessionLog) {
+    final server = await SessionState.instance.coordinator.sessionLog(hours: since.inHours);
+    b
+      ..writeln()
+      ..writeln("--- last ${since.inHours} h of the server's session log ---")
+      ..write(server ?? "(none: the server keeps no session log, or it couldn't be reached)");
+  }
+  return redactLog(b.toString());
+}
+
+/// Saves [text] next to the logs as `diagnostics-<time>.txt`; its path,
+/// or null when it could not be written.
+Future<String?> saveDiagnostics(String text) async {
+  final dir = appLogDir;
+  if (dir == null) return null;
+  final t = DateTime.now();
+  String two(int n) => n.toString().padLeft(2, '0');
+  final path = '$dir${Platform.pathSeparator}diagnostics-${t.year}${two(t.month)}${two(t.day)}-'
+      '${two(t.hour)}${two(t.minute)}${two(t.second)}.txt';
+  try {
+    // Older ones go after the log files' week.
+    for (final e in Directory(dir).listSync()) {
+      if (e is File &&
+          e.uri.pathSegments.last.startsWith('diagnostics-') &&
+          t.difference(e.statSync().modified) > const Duration(days: 7)) {
+        e.deleteSync();
+      }
+    }
+    await File(path).writeAsString(text);
+    return path;
+  } catch (e) {
+    _appLog.warning('cannot save diagnostics: $e');
+    return null;
+  }
+}

apps/desktop/lib/src/platform/attention.dart

@@ -0,0 +1,19 @@
+import 'package:flutter/foundation.dart';
+import 'package:flutter/services.dart';
+
+/// The runner's window channel (linux/runner/my_application.cc,
+/// windows/runner/flutter_window.cpp).
+const _window = MethodChannel('starsync/window');
+
+/// Asks the desktop to point at the app's window (taskbar flash, urgency
+/// hint) when it is not focused; nothing when it is. The runner clears it
+/// once the window gets focus. Quietly nothing where the runner lacks it.
+Future<void> requestWindowAttention() async {
+  try {
+    await _window.invokeMethod<void>('attention');
+  } on MissingPluginException {
+    // Tests, other platforms.
+  } catch (e) {
+    debugPrint('window attention: $e');
+  }
+}

apps/desktop/lib/src/platform/desktop_entry.dart

@@ -0,0 +1,53 @@
+import 'dart:io';
+
+import 'package:flutter/foundation.dart';
+import 'package:sync_relay_core/core.dart' show findInstallRoot;
+
+/// The app's id: GTK's application id, so the Wayland `app_id` the
+/// compositor matches to [desktopFileName] for the window's icon.
+const appId = 'moe.senkochan.watch_together';
+const desktopFileName = '$appId.desktop';
+
+/// Linux release installs (an unpacked tarball) carry no launcher entry, so
+/// Wayland shows a generic icon. On start: write the `.desktop` file into
+/// `~/.local/share/applications` (Exec = this binary) and the icon into
+/// the hicolor theme, only when something changed (a moved install, a new
+/// icon). Never in debug runs; failures only log.
+Future<void> installDesktopEntry({String? executable, String? dataHome, String? home}) async {
+  if (!Platform.isLinux || kDebugMode) return;
+  try {
+    final exe = executable ?? Platform.resolvedExecutable;
+    final root = findInstallRoot(exe, windows: false);
+    if (root == null) return;
+    final share = dataHome ?? Platform.environment['XDG_DATA_HOME'] ??
+        '${home ?? Platform.environment['HOME']}/.local/share';
+    final icons = '${root.path}/data/flutter_assets/assets/icon';
+    for (final size in const [16, 32, 48, 64, 128, 256, 512]) {
+      final src = File('$icons/icon_$size.png');
+      if (!src.existsSync()) continue;
+      final dst = File('$share/icons/hicolor/${size}x$size/apps/$appId.png');
+      if (dst.existsSync() && dst.lengthSync() == src.lengthSync()) continue;
+      await dst.parent.create(recursive: true);
+      await src.copy(dst.path);
+    }
+    final entry = desktopEntryText(exe);
+    final file = File('$share/applications/$desktopFileName');
+    if (file.existsSync() && file.readAsStringSync() == entry) return;
+    await file.parent.create(recursive: true);
+    await file.writeAsString(entry);
+  } catch (e) {
+    debugPrint('desktop entry: $e');
+  }
+}
+
+@visibleForTesting
+String desktopEntryText(String exe) => '''[Desktop Entry]
+Type=Application
+Name=Starsync
+Comment=Watch videos in sync with friends
+Exec="$exe"
+Icon=$appId
+StartupWMClass=$appId
+Categories=AudioVideo;Video;Player;Network;
+Terminal=false
+''';

apps/desktop/lib/src/platform/window_memory.dart

@@ -0,0 +1,106 @@
+import 'dart:async';
+import 'dart:io';
+import 'dart:ui';
+
+import 'package:flutter/foundation.dart';
+import 'package:hive_ce_flutter/hive_flutter.dart';
+import 'package:screen_retriever/screen_retriever.dart';
+import 'package:window_manager/window_manager.dart';
+
+/// The window's size, position and maximized state across restarts (and
+/// hot restarts), in the settings box. The size and position kept are
+/// the normal (unmaximized) ones; fullscreen is never saved or restored.
+/// Wayland lets no app place its own window, so there only the size and
+/// maximized state come back (the compositor decides the position).
+class WindowMemory with WindowListener {
+  static const _key = 'windowBounds';
+  static const defaultSize = Size(1280, 720);
+
+  // Null when the settings box failed to open: defaults, nothing saved.
+  final Box? _box;
+  Timer? _save;
+  WindowMemory(this._box);
+
+  static bool get _canPlace => !(Platform.isLinux && Platform.environment['WAYLAND_DISPLAY'] != null);
+
+  Map? get _saved => _box?.get(_key) is Map ? _box!.get(_key) as Map : null;
+
+  /// The size to open at: the last normal size, else [defaultSize].
+  Size get size {
+    final s = _saved;
+    final w = s?['w'], h = s?['h'];
+    return w is num && h is num && w >= 160 && h >= 90 ? Size(w.toDouble(), h.toDouble()) : defaultSize;
+  }
+
+  /// Whether a saved position exists to place the window at (else center).
+  bool get hasPosition => _canPlace && _saved?['x'] is num && _saved?['y'] is num;
+
+  /// After the window shows: back to the saved position when it still
+  /// lands on a connected display, maximized when it was; then listens.
+  Future<void> restore() async {
+    final s = _saved;
+    try {
+      if (s != null && hasPosition) {
+        final rect = Offset((s['x'] as num).toDouble(), (s['y'] as num).toDouble()) & size;
+        if (await _onSomeDisplay(rect)) {
+          await windowManager.setPosition(rect.topLeft);
+        } else {
+          await windowManager.center();
+        }
+      }
+      if (s?['max'] == true) await windowManager.maximize();
+    } catch (e) {
+      debugPrint('window restore failed: $e');
+    }
+    windowManager.addListener(this);
+  }
+
+  // At least a 100×50 corner of the title area on a display's visible area.
+  static Future<bool> _onSomeDisplay(Rect r) async {
+    final grip = Rect.fromLTWH(r.left, r.top, r.width.clamp(0, 100).toDouble(), 50);
+    for (final d in await screenRetriever.getAllDisplays()) {
+      final area = (d.visiblePosition ?? Offset.zero) & (d.visibleSize ?? d.size);
+      if (area.overlaps(grip)) return true;
+    }
+    return false;
+  }
+
+  void _later() {
+    _save?.cancel();
+    _save = Timer(const Duration(milliseconds: 400), () => unawaited(save()));
+  }
+
+  /// Writes the current state now (also on close).
+  Future<void> save() async {
+    _save?.cancel();
+    final box = _box;
+    if (box == null) return;
+    try {
+      if (await windowManager.isFullScreen() || await windowManager.isMinimized()) return;
+      final max = await windowManager.isMaximized();
+      final s = Map<String, Object?>.of((_saved ?? const {}).cast<String, Object?>());
+      s['max'] = max;
+      if (!max) {
+        final b = await windowManager.getBounds();
+        s['w'] = b.width;
+        s['h'] = b.height;
+        if (_canPlace) {
+          s['x'] = b.left;
+          s['y'] = b.top;
+        }
+      }
+      await box.put(_key, s);
+    } catch (e) {
+      debugPrint('window save failed: $e');
+    }
+  }
+
+  @override
+  void onWindowResized() => _later();
+  @override
+  void onWindowMoved() => _later();
+  @override
+  void onWindowMaximize() => _later();
+  @override
+  void onWindowUnmaximize() => _later();
+}

apps/desktop/lib/src/playback/frame_watchdog.dart

@@ -1,120 +0,0 @@
-import 'dart:typed_data';
-
-/// FNV-1a over a 15x15 grid of RGB(A) pixels in the central half of an
-/// image. Used on a small capture of what the compositor shows: the
-/// centre is video, the edges carry the (changing) control overlays.
-int hashCenterPixels(ByteData rgba, int width, int height) {
-  var x = 0x811c9dc5;
-  if (width <= 0 || height <= 0) return x;
-  for (var gy = 1; gy < 16; gy++) {
-    for (var gx = 1; gx < 16; gx++) {
-      final px = (width * (0.25 + 0.5 * gx / 16)).floor();
-      final py = (height * (0.25 + 0.5 * gy / 16)).floor();
-      final o = (py * width + px) * 4;
-      if (o + 3 > rgba.lengthInBytes) continue;
-      for (var c = 0; c < 3; c++) {
-        x = ((x ^ rgba.getUint8(o + c)) * 0x01000193) & 0xffffffff;
-      }
-    }
-  }
-  return x;
-}
-
-/// FNV-1a over ~4k bytes spread evenly across a raw frame (mpv
-/// `screenshot-raw`); dimension-agnostic, enough to tell frames apart.
-int hashSpread(Uint8List bytes) {
-  var x = 0x811c9dc5;
-  if (bytes.isEmpty) return x;
-  final step = bytes.length <= 4096 ? 1 : bytes.length ~/ 4096;
-  for (var i = 0; i < bytes.length; i += step) {
-    x = ((x ^ bytes[i]) * 0x01000193) & 0xffffffff;
-  }
-  return x;
-}
-
-/// One sample of player state, taken about once a second.
-class FrameSample {
-  final DateTime at;
-  final double position;
-
-  /// Fingerprint of the picture currently shown on screen; null when it
-  /// cannot be captured (no view, hidden window, headless).
-  final int? frames;
-
-  /// Playing, not buffering, rate > 0, video track present, window
-  /// visible. Anything else disarms the watchdog.
-  final bool eligible;
-  const FrameSample({
-    required this.at,
-    required this.position,
-    required this.frames,
-    required this.eligible,
-  });
-}
-
-/// Detects a frozen picture: position advances normally but the shown
-/// picture stands still for [stallAfter]. Seeks (position jumps), pauses,
-/// buffering and missing captures all reset the stall clock. A hit is a
-/// suspicion only — a still scene looks the same — so the caller confirms
-/// it against the decoder and calls [dismiss] when it was a still scene.
-/// Fires at most once until the picture is seen moving again for
-/// [rearmAfter], so a player that stays (or soon gets) frozen after a
-/// reload does not reload in a loop. [reset] keeps that latch.
-class FrameWatchdog {
-  static const stallAfter = Duration(seconds: 3);
-  static const rearmAfter = Duration(seconds: 10);
-
-  FrameSample? _last;
-  DateTime? _stallSince;
-  DateTime? _healthySince;
-  bool _fired = false;
-
-  void reset() {
-    _last = null;
-    _stallSince = null;
-    _healthySince = null;
-  }
-
-  /// The last hit was a still scene: re-arm, but wait a full
-  /// [stallAfter] before suspecting again.
-  void dismiss() {
-    _fired = false;
-    _stallSince = null;
-  }
-
-  /// Returns true exactly when a freeze is suspected.
-  bool feed(FrameSample s) {
-    final last = _last;
-    _last = s;
-    if (!s.eligible || s.frames == null || last == null ||
-        !last.eligible || last.frames == null) {
-      _stallSince = null;
-      _healthySince = null;
-      return false;
-    }
-    if (s.frames != last.frames) {
-      _stallSince = null;
-      _healthySince ??= last.at;
-      if (s.at.difference(_healthySince!) >= rearmAfter) _fired = false;
-      return false;
-    }
-    _healthySince = null;
-    final wall = s.at.difference(last.at).inMilliseconds / 1000.0;
-    final moved = s.position - last.position;
-    // Normal playback only: a jump (seek) or a standstill (stall, the
-    // position itself stuck) is not a frozen picture.
-    final normal = wall > 0 && moved > wall * 0.5 && moved < wall * 2 + 0.5;
-    if (!normal) {
-      _stallSince = null;
-      return false;
-    }
-    _stallSince ??= last.at;
-    if (_fired) return false;
-    if (s.at.difference(_stallSince!) >= stallAfter) {
-      _fired = true;
-      _stallSince = null;
-      return true;
-    }
-    return false;
-  }
-}

apps/desktop/lib/src/playback/media_marks.dart

@@ -243,18 +243,20 @@ const _skipTail = Duration(seconds: 1);
 /// The skip pill at [position]: inside the opening "Skip OP" (to its end),
 /// inside the ending "Skip ED" (to its end only: what follows, preview or
 /// more episode, is the viewer's call). Without any opening info on media
-/// longer than [fallbackMinDuration], "Skip 1:30" during the first
-/// [fallbackWindow]. Null otherwise.
+/// longer than [fallbackMinDuration] and without chapters ([chaptered]: a
+/// chaptered file without an OP chapter has none on purpose), "Skip 1:30"
+/// during the first [fallbackWindow]. Null otherwise.
 SkipOffer? skipOfferAt({
   required Duration position,
   required Duration duration,
   required SkipRange? opening,
   required SkipRange? ending,
+  bool chaptered = false,
 }) {
   bool inside(SkipRange r) => position >= r.start && position < r.end - _skipTail;
   if (opening != null && inside(opening)) return SkipOffer(SkipKind.opening, opening.end);
   if (ending != null && inside(ending)) return SkipOffer(SkipKind.ending, ending.end);
-  if (opening == null && duration > fallbackMinDuration && position < fallbackWindow) {
+  if (opening == null && !chaptered && duration > fallbackMinDuration && position < fallbackWindow) {
     final to = position + fallbackSkip;
     return SkipOffer(SkipKind.fixed, to < duration ? to : duration);
   }

apps/desktop/lib/src/playback/playback_controller.dart

@@ -1,12 +1,14 @@
 import 'dart:async';
+import 'dart:ffi' show Int8;
 import 'dart:io';
 
-import 'package:flutter/foundation.dart' show listEquals;
+import 'package:ffi/ffi.dart' show StringUtf8Pointer, malloc;
+import 'package:flutter/foundation.dart' show listEquals, mapEquals;
 import 'package:flutter/widgets.dart';
 import 'package:media_kit/media_kit.dart';
 import 'package:media_kit_video/media_kit_video.dart';
 import 'package:signals/signals_flutter.dart';
-import 'package:sync_relay_core/core.dart' show JellyfinStreamType;
+import 'package:sync_relay_core/core.dart' show JellyfinStreamType, LogThrottle, createLogger;
 
 import '../jellyfin/track_prefs.dart' show MpvTrack;
 import '../shaders/shader_assets.dart';
@@ -14,13 +16,14 @@ import '../shaders/shader_presets.dart';
 import '../state/settings.dart';
 import '../sync/state_diff.dart';
 import '../sync/user_seek.dart';
-import 'frame_watchdog.dart';
 import 'media_marks.dart';
+import 'yt_dlp_app.dart' show AppYtDlp, ytdlFormat;
 
-/// Owns one mpv [Player] (and its [VideoController]) per session: created
+/// Owns the session's mpv [Player] (and its [VideoController]): created
 /// by [init] on join, released by [dispose] on leave, swapped by
-/// [recreate] for "Reload video". Never reuse a player across sessions —
-/// a GPU-side freeze sticks to the player, not to the widget.
+/// [recreate] for "Reload video" and by [openUrl] for every new media (a
+/// promoted preload or a fresh player). Never reuse a player for other
+/// media — a GPU-side freeze sticks to the player, not to the widget.
 class PlaybackController {
   /// Read-ahead target: about two minutes rides out short outages and
   /// makes skipping an intro instant.
@@ -32,14 +35,14 @@ class PlaybackController {
   /// Back buffer (media_kit sets it to bufferSize too): enough for a short
   /// seek back without holding another 256 MiB.
   static const maxBackBytes = 64 * 1024 * 1024;
+  /// mpv's `volume-max` (its default is 130): the volume controls go
+  /// this far, past 100 % amplified.
+  static const maxVolume = 150;
 
   SyncPlayer? _player;
   VideoController? _video;
-  Timer? _watchTimer;
-  bool _probing = false;
-  final FrameWatchdog _watchdog = FrameWatchdog();
   StreamSubscription<PlayerLog>? _logSub;
-  final List<StreamSubscription<Duration>> _timeSubs = [];
+  final List<StreamSubscription<Object?>> _timeSubs = [];
   String _chapterJson = '';
   // `glsl-shaders` as last set on the current player ('' = none).
   String _shaders = '';
@@ -54,12 +57,53 @@ class PlaybackController {
   /// otherwise, so no texture outlives its player.
   final alive = signal(false);
 
-  /// Called once when the watchdog sees a frozen picture.
-  void Function()? onFrozen;
+  /// mpv's yt-dlp hook could not open the current link (its error text).
+  void Function(String error)? onYtdlError;
 
-  /// Fingerprint of the picture on screen, installed by the video view
-  /// (`ShownFrameProbe.sample`). Without it the watchdog stays idle.
-  Future<int?> Function()? shownFrame;
+  /// The current media failed to load (the HTTP error when there was one,
+  /// e.g. a CDN's 403), at most once per [openUrl].
+  void Function(String error)? onLoadError;
+
+  // Per opened media: the last HTTP error ffmpeg logged, and whether a
+  // load error was reported.
+  String? _httpError;
+  bool _loadErrorSent = false;
+
+  /// mpv's log level for this app. media_kit drains mpv's log on the UI
+  /// thread one line at a time, so a chatty level (ffmpeg retrying a
+  /// refused request logs every attempt) can starve the UI: warnings and
+  /// errors only, except while the video output starts ([video]), when
+  /// the render-mode probe needs mpv's verbose GL init lines.
+  static const logLevel = 'warn';
+
+  /// Points mpv's yt-dlp hook at [path] (the app's managed copy) for web
+  /// page links, at most 1080p, once per player; its cookies
+  /// (`ytdl-raw-options`) whenever they changed.
+  Future<void> useYtDlp(String path) async {
+    final p = _player;
+    if (p == null) return;
+    try {
+      _ytdlPath = path;
+      final dynamic platform = p.platform;
+      if (!identical(p, _ytdlSetOn)) {
+        await platform?.setProperty('script-opts', 'ytdl_hook-ytdl_path=$path');
+        await platform?.setProperty('ytdl-format', ytdlFormat);
+        _ytdlSetOn = p;
+        _ytdlRaw = '';
+      }
+      final raw = await AppYtDlp.instance.mpvRawOptions();
+      if (raw != _ytdlRaw && identical(p, _player)) {
+        await platform?.setProperty('ytdl-raw-options', raw);
+        _ytdlRaw = raw;
+      }
+    } catch (e) {
+      debugPrint('yt-dlp path not set: $e');
+    }
+  }
+
+  Player? _ytdlSetOn;
+  String _ytdlRaw = '';
+  String? _ytdlPath;
 
   Player get player => _player!;
 
@@ -128,6 +172,7 @@ class PlaybackController {
     final existing = _video;
     if (existing != null) return existing;
     final hwdec = _hwdecOverride;
+    _requestLog(player, 'v'); // back to [logLevel] by _detectRenderMode
     // media_kit's video output sets hwdec itself on attach ('auto' unless
     // configured), which used to override SYNC_RELAY_HWDEC.
     final video = _video = VideoController(
@@ -146,26 +191,27 @@ class PlaybackController {
     return AppSettings.instance.hwdec.peek();
   }
 
-  Future<void> init() async {
-    if (_player != null) return;
-    _player = SyncPlayer(
+  SyncPlayer _newPlayer({required int bufferSize, required MPVLogLevel logLevel}) => SyncPlayer(
           configuration: PlayerConfiguration(
-      bufferSize: maxBytes,
+        bufferSize: bufferSize,
         libass: true,
         vo: Platform.environment['SYNC_RELAY_VO'],
-      // Verbose: the render-mode probe needs mpv's GL init lines.
-      logLevel: MPVLogLevel.v,
+        logLevel: logLevel,
       ))
         ..onUserSeek = (d) => onUserSeek?.call(d);
+
+  Future<void> init() async {
+    if (_player != null) return;
+    _player = _newPlayer(bufferSize: maxBytes, logLevel: MPVLogLevel.warn); // see [logLevel]
+    _held = false;
     _shaders = '';
     renderMode.value = RenderMode.unknown;
     shaderNotice.value = null;
     _logSub = _player!.stream.log.listen(_onLog);
     _watchMarks(_player!);
     await _pinBufferProps();
+    await _pin('volume-max', '$maxVolume');
     await applyShaders();
-    _watchdog.reset();
-    _watchTimer = Timer.periodic(const Duration(seconds: 1), (_) => _watch());
     generation.value++;
     alive.value = true;
   }
@@ -183,9 +229,9 @@ class PlaybackController {
     }
   }
 
-  Future<void> _pin(String property, String value) async {
+  Future<void> _pin(String property, String value, [Player? on]) async {
     try {
-      final dynamic platform = player.platform;
+      final dynamic platform = (on ?? player).platform;
       await platform?.setProperty(property, value);
       final got = '${await platform?.getProperty(property)}';
       if (!pinMatches(value, got)) {
@@ -198,18 +244,39 @@ class PlaybackController {
     }
   }
 
-  Future<void> _pinBufferProps() async {
-    pinMismatches.clear();
-    await _pin('demuxer-readahead-secs', '$readAheadSecs');
-    await _pin('cache-secs', '$readAheadSecs');
-    await _pin('demuxer-max-bytes', '$maxBytes');
-    await _pin('demuxer-max-back-bytes', '$maxBackBytes');
+  Future<void> _pinBufferProps([Player? on, int ahead = maxBytes, int back = maxBackBytes]) async {
+    if (on == null) pinMismatches.clear();
+    await _pin('demuxer-readahead-secs', '$readAheadSecs', on);
+    await _pin('cache-secs', '$readAheadSecs', on);
+    await _pin('demuxer-max-bytes', '$ahead', on);
+    await _pin('demuxer-max-back-bytes', '$back', on);
     final hwdec = _hwdecOverride;
     if (hwdec != null) {
-      await _pin('hwdec', hwdec);
+      await _pin('hwdec', hwdec, on);
+    }
+    await _pin('stream-lavf-o', streamLavfOptions, on);
+  }
+
+  /// ffmpeg's HTTP options (mpv `stream-lavf-o`, comma form): reconnect
+  /// after a dropped connection, also on a streamed (growing) relay
+  /// response, and a server error (5xx) while connecting; a refused request
+  /// (4xx) fails at once. At most 3 tries per read, 4 s apart at most.
+  static const streamLavfOptions = 'reconnect_streamed=1,reconnect_on_http_error=5xx,'
+      'reconnect_delay_max=4,reconnect_max_retries=3';
+
+  // mpv_request_log_messages on [p]'s handle (media_kit has no API for it).
+  static void _requestLog(Player p, String level) {
+    try {
+      final dynamic platform = p.platform;
+      final name = level.toNativeUtf8();
+      try {
+        platform.mpv.mpv_request_log_messages(platform.ctx, name.cast<Int8>());
+      } finally {
+        malloc.free(name);
+      }
+    } catch (e) {
+      debugPrint('mpv log level $level not set: $e');
     }
-    await _pin('stream-lavf-o',
-        'reconnect_streamed=1,reconnect_on_http_error=1,reconnect_delay_max=4');
   }
 
   /// Puts the saved shader choice (Settings, Ctrl+0..6, shader button) on
@@ -294,6 +361,31 @@ class PlaybackController {
   // an error there while shaders are on is a shader that failed to load
   // or compile (mpv then renders without it).
   void _onLog(PlayerLog log) {
+    _toAppLog(log);
+    if (log.prefix == 'ytdl_hook' && (log.level == 'error' || log.level == 'fatal')) {
+      final text = log.text.trim().replaceFirst(RegExp(r'^ERROR:\s*'), '');
+      if (text.isNotEmpty) {
+        _loadErrorSent = true;
+        onYtdlError?.call(text);
+      }
+      return;
+    }
+    // ffmpeg logs through one mpv instance per process (the first one
+    // alive), so the HTTP status is a bonus, not a given.
+    if (log.prefix == 'ffmpeg') {
+      final http = RegExp(r'HTTP error \d{3}.*').firstMatch(log.text);
+      if (http != null) _httpError = http[0]!.trim();
+      return;
+    }
+    // Nothing playable opened (a track of mpv's yt-dlp EDL refused, ...).
+    if (!_loadErrorSent && _loadFailed(log, duration.peek())) {
+      _loadErrorSent = true;
+      final http = _httpError;
+      _mpvLog.warning('cannot open the media: [${log.prefix}] ${log.text.trim()}'
+          '${http == null ? ' (no HTTP error logged; a request that timed out after 5 s looks like this)' : ' ($http)'}');
+      onLoadError?.call(http == null ? 'the video stream could not be opened' : 'the video server answered $http');
+      return;
+    }
     if (log.prefix != 'libmpv_render') return;
     if (log.text.contains('suspected software renderer')) {
       _setRenderMode(RenderMode.softwareGl);
@@ -313,6 +405,32 @@ class PlaybackController {
     }
   }
 
+  // mpv's warnings and errors (the session player's; ffmpeg's through
+  // whichever player logs them) go to the app log, a few per kind at a
+  // time: a refused request makes ffmpeg retry and warn on every try.
+  static final _mpvLog = createLogger('mpv');
+  static final _mpvThrottle = LogThrottle(burst: 5);
+
+  static void _toAppLog(PlayerLog log, {String player = ''}) {
+    final level = log.level;
+    if (level != 'warn' && level != 'error' && level != 'fatal') return;
+    final text = log.text.trim();
+    if (text.isEmpty) return;
+    final pass = _mpvThrottle.allow('$player${log.prefix} $level ${text.length > 40 ? text.substring(0, 40) : text}');
+    if (pass == null) return;
+    final line = '$pass$player[${log.prefix}] $text';
+    level == 'warn' ? _mpvLog.info(line) : _mpvLog.warning(line);
+  }
+
+  /// [log] says the media could not be opened: before a [duration] is
+  /// known, mpv's fatal "nothing to play" or a demuxer error, or a yt-dlp
+  /// hook error.
+  static bool _loadFailed(PlayerLog log, Duration duration) {
+    if (log.prefix == 'ytdl_hook') return log.level == 'error' || log.level == 'fatal';
+    return duration == Duration.zero &&
+        ((log.prefix == 'cplayer' && log.level == 'fatal') || (log.prefix == 'demux' && log.level == 'error'));
+  }
+
   void _setRenderMode(RenderMode mode) {
     renderMode.value = mode;
     lastRenderMode.value = mode;
@@ -324,10 +442,12 @@ class PlaybackController {
   Future<void> _detectRenderMode(Player p, VideoController video) async {
     try {
       await video.platform.future;
+      await Future.delayed(const Duration(milliseconds: 1500));
     } catch (_) {
       return;
+    } finally {
+      if (identical(p, _player)) _requestLog(p, logLevel);
     }
-    await Future.delayed(const Duration(milliseconds: 1500));
     if (!identical(p, _player) || renderMode.peek() != RenderMode.unknown) {
       return;
     }
@@ -338,84 +458,46 @@ class PlaybackController {
     }
   }
 
-  /// Fingerprint of the decoder's current frame (mpv `screenshot-raw`,
-  /// off-thread); null without video.
-  Future<int?> _sourceFrame(Player p) async {
+  /// `mpv-version` and `ffmpeg-version` of the session player, for
+  /// diagnostics; null when there is no player.
+  Future<String?> mpvVersion() async {
+    final p = _player;
+    if (p == null) return null;
     try {
-      final raw = await p.screenshot(format: null);
-      return raw == null || raw.isEmpty ? null : hashSpread(raw);
+      final dynamic platform = p.platform;
+      return '${await platform?.getProperty('mpv-version')}, ffmpeg ${await platform?.getProperty('ffmpeg-version')}';
     } catch (_) {
       return null;
     }
   }
 
-  /// A suspected freeze is real only if mpv's own frames still move: a
-  /// still scene looks frozen on screen too.
-  Future<bool> _sourceMoving(Player p) async {
-    final a = await _sourceFrame(p);
-    await Future.delayed(const Duration(milliseconds: 500));
-    if (!identical(p, _player) || !p.state.playing) return false;
-    final b = await _sourceFrame(p);
-    return a != null && b != null && a != b;
-  }
-
-  static bool get _windowVisible {
-    try {
-      final s = WidgetsBinding.instance.lifecycleState;
-      return s == null ||
-          s == AppLifecycleState.resumed ||
-          s == AppLifecycleState.inactive;
-    } catch (_) {
-      return false;
-    }
-  }
-
-  Future<void> _watch() async {
-    final p = _player;
-    final probe = shownFrame;
-    // Only meaningful once the video view is up.
-    if (p == null || _video == null || probe == null || _probing) return;
-    _probing = true;
-    try {
-      final frames = await probe();
-      if (!identical(p, _player)) return;
-      final s = p.state;
-      final eligible = s.playing &&
-          !s.buffering &&
-          !s.completed &&
-          s.rate > 0 &&
-          (s.width ?? 0) > 0 &&
-          _windowVisible;
-      final fired = _watchdog.feed(FrameSample(
-        at: DateTime.now(),
-        position: positionSecs,
-        frames: frames,
-        eligible: eligible,
-      ));
-      if (fired) {
-        if (await _sourceMoving(p) && identical(p, _player)) {
-          debugPrint('video watchdog: picture stuck while mpv frames move');
-          onFrozen?.call();
-        } else {
-          _watchdog.dismiss();
-        }
-      }
-    } finally {
-      _probing = false;
-    }
-  }
-
   /// Opens [url] paused. [headers] go with every request for it (mpv
   /// `http-header-fields`): a Jellyfin token travels there, not in the URL.
-  Future<void> openUrl(String url, {Map<String, String>? headers}) async {
-    if (!_ready) return;
+  /// Each media gets its own player: when [preload] holds the same [url]
+  /// and [headers], that player becomes this one (true: promoted, its
+  /// buffer comes along); else a player that already held media is
+  /// replaced by a fresh one first ([onFreshPlayer] once it is up), unless
+  /// [keepPlayer] (the same media again, e.g. after a reconnect).
+  Future<bool> openUrl(String url,
+      {Map<String, String>? headers, bool keepPlayer = false, void Function()? onFreshPlayer}) async {
+    if (!_ready) return false;
+    final pre = _pre;
+    if (pre != null && pre.matches(url, headers)) {
+      if (await _promote(pre)) return true;
+    }
+    if (_held && !keepPlayer && await _freshPlayer()) onFreshPlayer?.call();
+    if (!_ready) return false;
     try {
+      _held = true;
       _chapterJson = '';
+      _httpError = null;
+      _loadErrorSent = false;
       chapters.value = const [];
       tracks.value = const [];
       buffered.value = Duration.zero;
       // An empty map, not null: media_kit caches headers per URI.
       await player.open(Media(url, httpHeaders: headers ?? const {}), play: false);
+      return false;
     } catch (e, st) {
       debugPrint('open ${Uri.tryParse(url)?.replace(query: '') ?? 'media'} failed: $e\n$st');
       rethrow;
@@ -426,9 +508,18 @@ class PlaybackController {
   // track-list observed in mpv (read back as JSON).
   void _watchMarks(SyncPlayer p) {
     _timeSubs.add(p.stream.position.listen((d) {
+      // At the end the bar shows full: mpv's last position is the last
+      // frame's start (and the 250 ms steps round down), short of duration.
+      if (p.state.completed && duration.value > Duration.zero) {
+        position.value = duration.value;
+        return;
+      }
       final ms = d.inMilliseconds;
       position.value = Duration(milliseconds: ms - ms % 250);
     }));
+    _timeSubs.add(p.stream.completed.listen((done) {
+      if (done && duration.value > Duration.zero) position.value = duration.value;
+    }));
     _timeSubs.add(p.stream.buffer.listen((d) {
       final ms = d.inMilliseconds;
       buffered.value = Duration(milliseconds: ms - ms % 250);
@@ -575,10 +666,9 @@ class PlaybackController {
   /// Release the player. The view drops its texture first ([alive] goes
   /// false, one frame passes), then mpv is torn down.
   Future<void> dispose() async {
+    await dropPreload();
     final p = _player;
     if (p == null) return;
-    _watchTimer?.cancel();
-    _watchTimer = null;
     await _logSub?.cancel();
     _logSub = null;
     for (final sub in _timeSubs) {
@@ -587,6 +677,7 @@ class PlaybackController {
     _timeSubs.clear();
     _player = null;
     _video = null;
+    _held = false;
     alive.value = false;
     _clearMarks();
     await _settleUi();
@@ -609,6 +700,246 @@ class PlaybackController {
     } catch (_) {}
   }
 
+  // ------------------------------------------------------------ preload
+  //
+  // A second, hidden player holding what plays next (Up next's first
+  // item), open paused at its start and muted, with a small cache: its
+  // first seconds are in before anyone asks. [openUrl] for the same URL
+  // promotes it to the session player (see ARCHITECTURE.md "Getting
+  // ready"). One at a time.
+
+  /// Preloading on (env `SYNC_RELAY_PRELOAD=0` turns it off; tests set it).
+  bool preloadEnabled = Platform.environment['SYNC_RELAY_PRELOAD'] != '0';
+
+  /// The preload's forward cache: its first seconds and the container's
+  /// index, at little memory. Raised to [maxBytes] when promoted.
+  static const preloadBytes = 48 * 1024 * 1024;
+  static const _preloadBackBytes = 8 * 1024 * 1024;
+
+  _Preload? _pre;
+
+  /// The URL preloaded now (null: none).
+  String? get preloadUrl => _pre?.url;
+
+  /// Opens [url] in the hidden preload player (replacing any other), and
+  /// completes once [need] seconds are buffered or the whole media is:
+  /// true, false when it failed (or was dropped or replaced meanwhile).
+  /// The same [url] and [headers] again is the same preload unless
+  /// [fresh]. [ytdlPath]: mpv's yt-dlp hook for web pages.
+  Future<bool> preload(String url,
+      {Map<String, String>? headers, String? ytdlPath, double need = 4, bool fresh = false}) async {
+    if (!preloadEnabled || !_ready) return false;
+    final had = _pre;
+    if (had != null && had.matches(url, headers) && !had.failed && !fresh) return had.ready.future;
+    // Set before any await: a second call for the same URL finds it.
+    _pre = null;
+    if (had != null) unawaited(_disposePreload(had));
+    final p = _newPlayer(bufferSize: preloadBytes, logLevel: MPVLogLevel.error);
+    final pre = _pre = _Preload(p, url, headers ?? const {});
+    pre.logSub = p.stream.log.listen((log) {
+      // ffmpeg logs through one mpv per process: the first one, and once
+      // that is gone (a promotion disposes it) the next one created, which
+      // can be this preload. Its HTTP errors still name the session's.
+      if (log.prefix == 'ffmpeg') return _onLog(log);
+      _toAppLog(log, player: 'preload ');
+      if (_loadFailed(log, p.state.duration)) pre.fail();
+    });
+    try {
+      await _pinBufferProps(p, preloadBytes, _preloadBackBytes);
+      await _pin('volume-max', '$maxVolume', p);
+      await _pin('mute', 'yes', p);
+      final path = ytdlPath ?? _ytdlPath;
+      if (path != null) {
+        pre.ytdlRaw = await _setYtdl(p, path);
+        pre.ytdl = true;
+      }
+      // With a view up, its own video output: mpv decodes (media_kit
+      // starts players with vid=no) and the first frame is there.
+      if (_video != null) {
+        pre.video = VideoController(p, configuration: VideoControllerConfiguration(hwdec: _hwdecOverride));
+        await pre.video!.platform.future;
+      }
+      if (!identical(_pre, pre)) {
+        pre.fail();
+        return false;
+      }
+      await p.open(Media(url, httpHeaders: headers ?? const {}), play: false);
+      if (!pre.opened.isCompleted) pre.opened.complete();
+    } catch (e) {
+      debugPrint('preload failed: $e');
+      pre.fail();
+      return false;
+    }
+    unawaited(_watchPreload(pre, need));
+    return pre.ready.future;
+  }
+
+  Future<void> _watchPreload(_Preload pre, double need) async {
+    final end = DateTime.now().add(const Duration(seconds: 60));
+    while (identical(_pre, pre) && !pre.failed && DateTime.now().isBefore(end)) {
+      final st = pre.player.state;
+      final secs = st.duration.inMilliseconds / 1000;
+      final buffered = (st.buffer - st.position).inMilliseconds / 1000;
+      if (secs > 0 && (buffered >= need || st.buffer.inMilliseconds / 1000 >= secs - 0.5)) {
+        if (!pre.ready.isCompleted) pre.ready.complete(true);
+        return;
+      }
+      await Future.delayed(const Duration(milliseconds: 200));
+    }
+    if (!pre.ready.isCompleted) pre.ready.complete(false);
+  }
+
+  /// Drops the preload (nothing to get ready, or something else is).
+  Future<void> dropPreload() async {
+    final pre = _pre;
+    if (pre == null) return;
+    _pre = null;
+    await _disposePreload(pre);
+  }
+
+  Future<void> _disposePreload(_Preload pre) async {
+    pre.fail();
+    await pre.logSub?.cancel();
+    try {
+      await pre.player.dispose();
+    } catch (_) {}
+  }
+
+  /// [pre] becomes the session player ([_adopt]); the full cache pins
+  /// replace its small ones.
+  Future<bool> _promote(_Preload pre) async {
+    await pre.opened.future;
+    final old = _player;
+    if (!identical(_pre, pre) || old == null) return false;
+    _pre = null;
+    if (pre.failed) {
+      unawaited(_disposePreload(pre));
+      return false;
+    }
+    await pre.logSub?.cancel();
+    if (!pre.ready.isCompleted) pre.ready.complete(true);
+    final p = pre.player;
+    await _adopt(p, pre.video, ytdl: pre.ytdl, ytdlRaw: pre.ytdlRaw);
+    try {
+      await _pin('mute', 'no', p);
+      await _pinBufferProps(p);
+    } catch (e) {
+      debugPrint('promoted player settings: $e');
+    }
+    return true;
+  }
+
+  // The current player has had media opened in it (one fresh from [init]
+  // has not, so the first open after join or Reload video uses it).
+  bool _held = false;
+
+  // The last replaced player until it is disposed: a fresh player waits
+  // for it, so at most one old player lingers.
+  Future<void> _retiring = Future.value();
+
+  /// Replaces the current player with a fresh one set up like [init]'s
+  /// (pins, hwdec, volume, yt-dlp hook, shaders, observers), its video
+  /// output ready before the view swaps to it when the view is up. True
+  /// once it is the session player.
+  Future<bool> _freshPlayer() async {
+    await _retiring;
+    final old = _player;
+    if (old == null) return false;
+    final p = _newPlayer(bufferSize: maxBytes, logLevel: MPVLogLevel.warn); // see [logLevel]
+    VideoController? video;
+    var ytdl = false, ytdlRaw = '';
+    try {
+      pinMismatches.clear();
+      await _pinBufferProps(p);
+      await _pin('volume-max', '$maxVolume', p);
+      final path = _ytdlPath;
+      if (path != null) {
+        ytdlRaw = await _setYtdl(p, path);
+        ytdl = true;
+      }
+      // The view is up: the new output is created (and its texture
+      // registered) before the view swaps, so the old picture stays until
+      // then. Created by the view instead while the render mode is not
+      // known yet, so the probe hears its GL init ([video]).
+      if (_video != null && renderMode.peek() != RenderMode.unknown) {
+        video = VideoController(p, configuration: VideoControllerConfiguration(hwdec: _hwdecOverride));
+        await video.platform.future;
+      }
+    } catch (e) {
+      debugPrint('fresh player setup: $e');
+    }
+    // Disposed or reloaded meanwhile: that player stays.
+    if (!identical(old, _player)) {
+      try {
+        await p.dispose();
+      } catch (_) {}
+      return false;
+    }
+    await _adopt(p, video, ytdl: ytdl, ytdlRaw: ytdlRaw);
+    return true;
+  }
+
+  /// mpv's yt-dlp hook on [p] (see [useYtDlp]); returns the raw options set.
+  static Future<String> _setYtdl(Player p, String path) async {
+    final dynamic platform = p.platform;
+    await platform?.setProperty('script-opts', 'ytdl_hook-ytdl_path=$path');
+    await platform?.setProperty('ytdl-format', ytdlFormat);
+    final raw = await AppYtDlp.instance.mpvRawOptions();
+    await platform?.setProperty('ytdl-raw-options', raw);
+    return raw;
+  }
+
+  /// [p] becomes the session player (a promoted preload or a fresh
+  /// player): log, marks and track observers move over, the view swaps to
+  /// its video output ([generation]), volume and shaders carry over, and
+  /// the old player is paused and disposed once the view let go of its
+  /// texture (as in [dispose]).
+  Future<void> _adopt(SyncPlayer p, VideoController? video, {required bool ytdl, String ytdlRaw = ''}) async {
+    final old = _player!;
+    final volume = old.state.volume;
+    await _logSub?.cancel();
+    for (final sub in _timeSubs) {
+      await sub.cancel();
+    }
+    _timeSubs.clear();
+    _player = p;
+    _video = video;
+    _held = true;
+    _ytdlSetOn = ytdl ? p : null;
+    _ytdlRaw = ytdlRaw;
+    _chapterJson = '';
+    _httpError = null;
+    _loadErrorSent = false;
+    _shaders = '';
+    final at = p.state.position.inMilliseconds;
+    position.value = Duration(milliseconds: at - at % 250);
+    duration.value = p.state.duration;
+    final ms = p.state.buffer.inMilliseconds;
+    buffered.value = Duration(milliseconds: ms - ms % 250);
+    chapters.value = const [];
+    tracks.value = const [];
+    _logSub = p.stream.log.listen(_onLog);
+    _requestLog(p, logLevel);
+    _watchMarks(p);
+    generation.value++;
+    // Normally stopped already (the coordinator leaves the previous
+    // media first): never two sounds at once.
+    unawaited(old.pause().catchError((_) {}));
+    try {
+      await p.setVolume(volume);
+    } catch (e) {
+      debugPrint('new player volume: $e');
+    }
+    unawaited(applyShaders());
+    unawaited(_refreshTracks());
+    _retiring = () async {
+      await _settleUi();
+      try {
+        await old.dispose();
+      } catch (_) {}
+    }();
+  }
+
   Future<void> stop() async {
     if (!_ready) return;
     try {
@@ -641,3 +972,27 @@ bool pinMatches(String wanted, String got) {
   final a = double.tryParse(wanted), b = double.tryParse(got);
   return a != null && b != null && a == b;
 }
+
+class _Preload {
+  final SyncPlayer player;
+  final String url;
+  final Map<String, String> headers;
+  VideoController? video;
+  StreamSubscription<PlayerLog>? logSub;
+  /// Completes once the media is handed to mpv (or the preload failed).
+  final opened = Completer<void>();
+  bool ytdl = false;
+  String ytdlRaw = '';
+  bool failed = false;
+  final ready = Completer<bool>();
+  _Preload(this.player, this.url, this.headers);
+
+  bool matches(String url, Map<String, String>? headers) =>
+      url == this.url && mapEquals(headers ?? const {}, this.headers);
+
+  void fail() {
+    failed = true;
+    if (!ready.isCompleted) ready.complete(false);
+    if (!opened.isCompleted) opened.complete();
+  }
+}

apps/desktop/lib/src/playback/yt_dlp_app.dart

@@ -0,0 +1,89 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:path_provider/path_provider.dart';
+import 'package:sync_relay_core/core.dart';
+
+/// mpv's `ytdl-format` for links every player opens itself.
+const ytdlFormat = 'bv*[height<=1080]+ba/b';
+
+/// yt-dlp's `--sub-langs` for mpv's hook (its default is `all`), without
+/// Bilibili's danmaku: an XML comment feed served raw-deflate, which
+/// ffmpeg fails to inflate on every read (a warning each time) while the
+/// video waits on it.
+const ytdlSubLangs = 'all,-danmaku';
+
+/// The app's yt-dlp (see [YtDlp]): in the app-support folder, shared with
+/// the hosted server. [probe] remembers what pasted links are for a while,
+/// so the Link preview and the swap ask once.
+class AppYtDlp {
+  static final instance = AppYtDlp();
+
+  /// [ytDlp]: a given one (tests); default in the app-support folder.
+  AppYtDlp([YtDlp? ytDlp]) : _ytDlp = ytDlp == null ? null : Future.value(ytDlp);
+
+  Future<YtDlp>? _ytDlp;
+  Future<YtDlp> get ytDlp => _ytDlp ??= () async {
+        final base = await getApplicationSupportDirectory();
+        return YtDlp(dir(base.path));
+      }();
+
+  static String dir(String appSupport) => '$appSupport${Platform.pathSeparator}yt-dlp';
+
+  /// Gets yt-dlp ready in the background (download on first run, a daily
+  /// update check afterwards).
+  void warmUp() => unawaited(ytDlp.then((y) => y.ensure()).catchError((_) => null));
+
+  /// mpv's `ytdl-raw-options`: [ytdlSubLangs] and the cookies in the
+  /// yt-dlp folder (see [YtDlpCookies]).
+  Future<String> mpvRawOptions() async {
+    const subs = 'sub-langs=%${ytdlSubLangs.length}%$ytdlSubLangs';
+    try {
+      final cookies = (await ytDlp).cookies.mpvRawOptions();
+      return cookies.isEmpty ? subs : '$subs,$cookies';
+    } catch (_) {
+      return subs;
+    }
+  }
+
+  final _probes = <String, ({DateTime at, DateTime until, Future<LinkProbe> f})>{};
+  static const _probeTtl = Duration(minutes: 10);
+
+  /// What [url] is, from memory while it is kept (10 minutes from when it
+  /// was probed; [keep] keeps it longer, for Up next's first item, which
+  /// is probed again before that runs out). [fresh] probes again: the
+  /// remembered result stays until the new one is in, and stays when the
+  /// new one fails.
+  Future<LinkProbe> probe(String url, {Duration keep = _probeTtl, bool fresh = false}) {
+    final now = DateTime.now();
+    _probes.removeWhere((_, v) => now.isAfter(v.until));
+    final hit = _probes[url];
+    if (hit != null && !fresh) {
+      final longer = hit.at.add(keep);
+      if (longer.isAfter(hit.until)) _probes[url] = (at: hit.at, until: longer, f: hit.f);
+      return hit.f;
+    }
+    final f = ytDlp.then((y) => probeLink(Uri.parse(url), ytDlp: y));
+    final until = now.add(keep);
+    if (hit == null) {
+      _probes[url] = (at: now, until: until, f: f);
+      f.catchError((Object _) {
+        if (_probes[url]?.f == f) _probes.remove(url);
+        return LinkProbe.file(Uri(), -1);
+      });
+    } else {
+      f.then<void>((_) {
+        _probes[url] = (at: now, until: until, f: f);
+      }, onError: (Object _) {});
+    }
+    return f;
+  }
+
+  /// [url] no longer needs keeping longer: back to the usual 10 minutes.
+  void release(String url) {
+    final hit = _probes[url];
+    if (hit == null) return;
+    final usual = hit.at.add(_probeTtl);
+    if (usual.isBefore(hit.until)) _probes[url] = (at: hit.at, until: usual, f: hit.f);
+  }
+}

apps/desktop/lib/src/queue/queue_controller.dart

@@ -0,0 +1,808 @@
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+import 'dart:math';
+
+import 'package:flutter/foundation.dart';
+import 'package:signals/signals_flutter.dart';
+import 'package:sync_relay_core/core.dart';
+
+import '../files/name_parser.dart';
+import '../files/thumbnails.dart';
+import '../jellyfin/accounts.dart';
+import '../jellyfin/format.dart' show pickFor;
+import '../jellyfin/session_media.dart';
+import '../screens/home/picked_media.dart';
+import '../session/media_art.dart';
+import '../session/session_coordinator.dart';
+import '../state/settings.dart';
+import '../sync/avatar_cache.dart';
+import 'queue_logic.dart';
+
+// Up next on this client (see ARCHITECTURE.md "Up next"): the server's
+// queue as signals, adding to it (probed, with a picture), the end-of-media
+// countdown for its first item, putting an item up when this app is the
+// one that can, and keeping that item ready.
+
+/// The end-of-media card for the first Up next item. [secondsLeft] null:
+/// no countdown here (auto-advance off, cancelled, or another app puts
+/// it up), the card offers Play now only.
+class UpNextCountdown {
+  final int mediaId;
+  final QueueItem item;
+  final int? secondsLeft;
+  const UpNextCountdown({required this.mediaId, required this.item, this.secondsLeft});
+}
+
+/// The first item's readiness on this app.
+enum WarmState { idle, warming, ready, failed }
+
+class QueueController {
+  final SessionCoordinator coord;
+  QueueController(this.coord);
+
+  /// Queued items' pictures by hash, from `/i/`.
+  late final PictureCache thumbs = PictureCache(coord.sync,
+      route: 'i', keep: RelayConstants.maxQueueItems + 8, live: (s) => [for (final q in s.queue) q.thumb]);
+
+  /// Up next, in order (empty when nothing is queued or not in a server).
+  late final Computed<List<QueueItem>> items =
+      computed(() => coord.serverState.value?.queue ?? const <QueueItem>[]);
+
+  final countdown = signal<UpNextCountdown?>(null);
+
+  /// The first item's id and how ready it is here (null: nothing to get
+  /// ready on this app).
+  final warm = signal<({String id, WarmState state})?>(null);
+
+  /// The natural continuation of what plays: the next episodes of the
+  /// Jellyfin series (not queued; shown greyed under Up next).
+  final continuation = signal<List<EpisodeLink>>(const []);
+
+  /// The mediaId whose continuation was cleared here.
+  final _hiddenFor = signal(-1);
+
+  /// The queue popover is open: the Up next button holds the controls up.
+  final popoverOpen = signal(false);
+
+  // What adder-only items stand for, by their key (a link passed on from
+  // here, a file here). Never leaves this app.
+  final Map<String, ({PickedMedia pick, DateTime at})> _local = {};
+  final Map<String, DateTime> _performing = {};
+  final Set<String> _skipped = {};
+  int _cancelledFor = -1;
+  Timer? _timer;
+  bool _attached = false;
+  String _continuationFor = '';
+  final _random = Random.secure();
+
+  String get _me => coord.sync.memberId;
+
+  void attach() {
+    if (_attached) return;
+    _attached = true;
+    coord.sync.states.listen(_onState);
+    coord.sync.feeds.listen(_onFeed);
+    effect(() {
+      final next = coord.nextEpisode.value;
+      final plan = coord.jellyfinPlan.value;
+      unawaited(_loadContinuation(next, plan));
+    });
+    // The continuation and the state decide what to get ready; the media
+    // playing having started (or sitting out) lets the preload go.
+    effect(() {
+      shownContinuation.value;
+      coord.settledMediaId.value;
+      coord.selfOut.value;
+      final r = coord.serverState.value;
+      untracked(() => _warm(r));
+    });
+  }
+
+  // ------------------------------------------------------------- adding
+
+  /// Adds [pick] to Up next (at the end, or with [next] right after what
+  /// plays). A link is probed first and refused like Put it up when it
+  /// will not play. Returns an error text, or null when sent.
+  Future<String?> add(PickedMedia pick, {bool next = false}) async {
+    coord.markInput();
+    if (coord.serverState.peek() == null) return 'not in a server';
+    if (items.peek().length >= RelayConstants.maxQueueItems) {
+      return 'Up next is full (${RelayConstants.maxQueueItems} items)';
+    }
+    final ({QueueItem item, Uint8List? thumb}) built;
+    try {
+      final b = await _build(pick);
+      if (b is String) return b;
+      built = b as ({QueueItem item, Uint8List? thumb});
+    } catch (e) {
+      return "couldn't add it: $e";
+    }
+    final item = built.item;
+    if (item.key.isNotEmpty) _local[item.key] = (pick: pick, at: DateTime.now());
+    final thumb = built.thumb;
+    coord.sync.sendQueue(QueueIntent.add(item, next: next, thumb: thumb == null ? '' : base64Encode(thumb)));
+    coord.showToast('Added ${item.title} to Up next');
+    return null;
+  }
+
+  /// A continuation episode becomes an Up next item.
+  Future<String?> promote(EpisodeLink e) => add(e.pick);
+
+  /// The item, or an error text.
+  Future<Object> _build(PickedMedia pick) async {
+    switch (pick) {
+      case JellyfinMedia():
+        final accounts = coord.jellyfin;
+        if (accounts.account(pick.serverId) == null) return 'that Jellyfin server is not linked any more';
+        if (accounts.statusOf(pick.serverId) == JellyfinAccountStatus.expired) {
+          return 'Jellyfin sign-in expired — reconnect it in Settings → Jellyfin & integrations';
+        }
+        final client = accounts.clientFor(pick.serverId);
+        final thumb = client == null ? null : await _jellyfinThumb(client, pick.itemId);
+        return (
+          item: QueueItem(
+            media: mediaForPick(pick),
+            how: QueueHow.jellyfin,
+            title: pick.title,
+            sub: pick.subtitle,
+            duration: (pick.runtime?.inMilliseconds ?? 0) / 1000,
+          ),
+          thumb: thumb,
+        );
+      case FileMedia(:final path):
+        final file = File(path);
+        if (!await file.exists()) return 'file not found — check the path';
+        final name = pick.label;
+        final parsed = parseReleaseName(name);
+        final shot = await thumbnailFor(path);
+        Uint8List? thumb;
+        if (shot != null) {
+          try {
+            final bytes = await File(shot.imagePath).readAsBytes();
+            if (bytes.length <= RelayConstants.maxPosterBytes) thumb = bytes;
+          } catch (_) {}
+        }
+        final ep = [
+          if (parsed.season != null) 'S${parsed.season}',
+          if (parsed.episode != null) 'E${parsed.episode}',
+        ].join();
+        return (
+          item: QueueItem(
+            media: HelloMedia(name: name, size: await file.length(), duration: 0),
+            how: QueueHow.file,
+            title: parsed.series.trim().isEmpty ? name : parsed.series.trim(),
+            sub: ep,
+            duration: (shot?.duration.inMilliseconds ?? 0) / 1000,
+            key: _newKey(),
+          ),
+          thumb: thumb,
+        );
+      case LinkMedia(:final url, :final anyway):
+        // Alone, a link plays direct: there is nobody to pass it on to.
+        final relay = coord.solo ? LinkRelay.direct : pick.relay;
+        final linked = await mediaForLink(coord.jellyfin, url);
+        final ref = linked.jellyfin;
+        if (ref != null) {
+          return (
+            item: QueueItem(
+                media: HelloMedia(name: linked.name, size: 0, duration: 0, jellyfin: ref),
+                how: QueueHow.jellyfin,
+                title: ref.title.isEmpty ? linked.name : ref.title,
+                sub: ref.subtitle ?? '',
+                duration: ref.runtimeSecs ?? 0),
+            thumb: null,
+          );
+        }
+        LinkProbe? probe;
+        String? probeError;
+        try {
+          probe = await coord.ytDlp.probe(url).timeout(const Duration(seconds: 45));
+        } catch (e) {
+          probeError = '$e';
+        }
+        final problem = probe == null ? playErrorText(probeError ?? '') : probe.problem;
+        if (problem != null && !anyway) return problem;
+        if (relay == LinkRelay.me) {
+          if (probe == null) return problem ?? "couldn't reach the site";
+          final relayProblem = probe.relayProblem;
+          if (relayProblem != null) return relayProblem;
+        }
+        if (relay == LinkRelay.server && !coord.serverHasPassword) return 'server fetch needs a server password';
+        if (relay == LinkRelay.server && probe != null && probe.isPage && probe.info != null) {
+          final relayProblem = probe.relayProblem;
+          if (relayProblem != null) return relayProblem;
+        }
+        final uri = Uri.tryParse(url) ?? Uri();
+        final info = probe?.info;
+        final title = probe?.title ?? linked.name;
+        final site = info == null
+            ? uri.host
+            : (info.uploader.isNotEmpty ? info.uploader : (info.extractor.isNotEmpty ? info.extractor : uri.host));
+        final thumbUrl = info?.thumbnail == null ? null : Uri.tryParse(info!.thumbnail!);
+        final thumb = thumbUrl == null ? null : (await thumbnailArt(thumbUrl))?.poster;
+        final how = switch (relay) {
+          LinkRelay.direct => QueueHow.direct,
+          LinkRelay.server => QueueHow.server,
+          LinkRelay.me => QueueHow.through,
+        };
+        return (
+          item: QueueItem(
+            media: HelloMedia(
+                name: title,
+                size: 0,
+                duration: 0,
+                url: how == QueueHow.through ? null : url,
+                relay: how == QueueHow.server ? const MediaRelay(fetch: true) : null),
+            how: how,
+            title: title,
+            sub: site,
+            duration: info?.duration ?? 0,
+            key: how == QueueHow.through ? _newKey() : '',
+          ),
+          thumb: thumb,
+        );
+    }
+  }
+
+  String _newKey() => [for (var i = 0; i < 12; i++) _random.nextInt(256).toRadixString(16).padLeft(2, '0')].join();
+
+  /// A wide picture of a Jellyfin item: an episode's own still, else the
+  /// item's (or series') thumb or backdrop, else its poster.
+  Future<Uint8List?> _jellyfinThumb(JellyfinClient client, String itemId) async {
+    try {
+      final item = await client.item(itemId).timeout(const Duration(seconds: 10));
+      final ref = (item.kind == JellyfinItemKind.episode ? item.ownImage(JellyfinImageType.primary) : null) ??
+          item.image(JellyfinImageType.thumb) ??
+          item.image(JellyfinImageType.backdrop) ??
+          item.image(JellyfinImageType.primary);
+      if (ref == null) return null;
+      return await fetchImage(
+          client.imageUrl(ref, maxWidth: 480, quality: 80), client.authHeaders, RelayConstants.maxPosterBytes);
+    } catch (e) {
+      debugPrint('queue: no Jellyfin picture for $itemId: $e');
+      return null;
+    }
+  }
+
+  /// [item]'s link as this app may hand it out (Copy link, Open in
+  /// browser): a link everyone opens (it is in the state), or a link this
+  /// app passes on (its adder). Null otherwise: a server-fetched link stays
+  /// with the server, another member's passed-on link with them.
+  String? linkOf(QueueItem item) => switch (item.how) {
+        QueueHow.direct => item.media.url,
+        QueueHow.through when item.by == _me => switch (_local[item.key]?.pick) {
+            LinkMedia(:final url) => url,
+            _ => null,
+          },
+        _ => null,
+      };
+
+  /// [item]'s page on its Jellyfin server, when that server is linked here.
+  String? jellyfinPageOf(QueueItem item) {
+    final ref = item.media.jellyfin;
+    return ref == null ? null : coord.jellyfin.webUrlOf(ref.serverId, ref.itemId);
+  }
+
+  // ------------------------------------------------------------ editing
+
+  void move(String id, int to) {
+    coord.markInput();
+    coord.sync.sendQueue(QueueIntent.move(id, to));
+  }
+
+  void remove(String id) {
+    coord.markInput();
+    coord.sync.sendQueue(QueueIntent.remove(id));
+  }
+
+  /// Plays [id] now: this app puts it up when it is the one that can,
+  /// else it asks the server, and the app that can puts it up.
+  void playNow(String id) {
+    coord.markInput();
+    final r = coord.serverState.peek();
+    final item = r?.queue.where((q) => q.id == id).firstOrNull;
+    if (r == null || item == null) return;
+    if (queuePerformer(item, r.members).id == _me) {
+      _perform(item);
+    } else {
+      coord.sync.sendQueue(QueueIntent.play(id));
+    }
+  }
+
+  /// Plays the first Up next item now.
+  void skip() {
+    final first = items.peek().firstOrNull;
+    if (first != null) playNow(first.id);
+  }
+
+  /// Cancel on the end-of-media card: no countdown here for this media.
+  void cancelCountdown() {
+    final c = countdown.peek();
+    _timer?.cancel();
+    _timer = null;
+    if (c == null) return;
+    _cancelledFor = c.mediaId;
+    countdown.value = UpNextCountdown(mediaId: c.mediaId, item: c.item);
+  }
+
+  /// "Clear": hides the continuation of what plays now (and its next
+  /// episode does not come up by itself).
+  void clearContinuation() {
+    final id = coord.serverState.peek()?.mediaId;
+    if (id != null) _hiddenFor.value = id;
+    if (coord.autoAdvance.peek() != null) coord.cancelAutoAdvance();
+  }
+
+  /// The continuation applies to [mediaId]: nothing is queued and it was
+  /// not cleared.
+  bool continuationShown(int mediaId) =>
+      (coord.serverState.peek()?.queue.isEmpty ?? true) && _hiddenFor.peek() != mediaId;
+
+  /// [continuation] unless cleared for the media playing.
+  late final Computed<List<EpisodeLink>> shownContinuation = computed(() {
+    final id = coord.serverState.value?.mediaId;
+    return id != null && _hiddenFor.value == id ? const <EpisodeLink>[] : continuation.value;
+  });
+
+  // --------------------------------------------------------- per state
+
+  void _onState(StateBroadcast r) {
+    _lastState = r;
+    _prune(r);
+    final queue = r.queue;
+    final play = r.queuePlay;
+    if (play != null) {
+      final item = queue.where((q) => q.id == play).firstOrNull;
+      if (item != null) _bringUp(item, r);
+    }
+    final finished = r.transport == 'finished';
+    if (queue.isNotEmpty && r.media == null) {
+      // Nothing up yet: the first item goes up at once.
+      _bringUp(queue.first, r);
+    } else if (finished && queue.isNotEmpty) {
+      _atEnd(r);
+    } else {
+      if (countdown.peek() != null) _stopCountdown();
+      if (!finished) _cancelledFor = -1;
+    }
+    _warm(r);
+  }
+
+  void _onFeed(FeedMessage f) {
+    if (f.action == 'queue-skip') {
+      coord.showToast('Skipped ${f.target ?? 'an item'}${f.reason.isEmpty ? '' : ': ${f.reason}'}');
+    }
+  }
+
+  /// Forgets what no longer matters: performing marks after a minute (a
+  /// swap that never landed may be tried again), local picks no longer
+  /// queued.
+  void _prune(StateBroadcast r) {
+    final now = DateTime.now();
+    _performing.removeWhere((_, at) => now.difference(at) > const Duration(minutes: 1));
+    final keys = {for (final q in r.queue) q.key};
+    _local.removeWhere((k, v) => !keys.contains(k) && now.difference(v.at) > const Duration(minutes: 1));
+    final ids = {for (final q in r.queue) q.id};
+    _skipped.removeWhere((id) => !ids.contains(id));
+  }
+
+  /// [item] should go up now: by this app when it is the one that can;
+  /// nobody can: the lowest member takes it off with the reason.
+  void _bringUp(QueueItem item, StateBroadcast r) {
+    final perf = queuePerformer(item, r.members);
+    if (perf.id == null) {
+      final why = perf.why;
+      if (why != null && queueJanitor(r.members) == _me && _skipped.add(item.id)) {
+        coord.sync.sendQueue(QueueIntent.remove(item.id, why: why));
+      }
+      return;
+    }
+    if (perf.id == _me) _perform(item);
+  }
+
+  /// The media finished with Up next waiting: the card, and with
+  /// auto-advance on the countdown, for its first item.
+  void _atEnd(StateBroadcast r) {
+    // Up next goes before the next episode, even one already counting.
+    if (coord.autoAdvance.peek() != null) coord.cancelAutoAdvance();
+    final head = r.queue.first;
+    final perf = queuePerformer(head, r.members);
+    if (perf.id == null && perf.why != null) {
+      // Taken off by [_bringUp]'s rule; the next state shows the next one.
+      _bringUp(head, r);
+      return;
+    }
+    final c = countdown.peek();
+    if (c != null && c.mediaId == r.mediaId) {
+      if (c.item.id != head.id || c.item.thumb != head.thumb) {
+        countdown.value = UpNextCountdown(mediaId: c.mediaId, item: head, secondsLeft: c.secondsLeft);
+      }
+      return;
+    }
+    final auto = AppSettings.instance.autoAdvance.peek() && _cancelledFor != r.mediaId;
+    countdown.value = UpNextCountdown(mediaId: r.mediaId, item: head, secondsLeft: auto ? autoAdvanceSecs : null);
+    _timer?.cancel();
+    _timer = auto ? Timer.periodic(const Duration(seconds: 1), (_) => _tick()) : null;
+  }
+
+  void _tick() {
+    final c = countdown.peek();
+    final r = coord.serverState.peek();
+    final left = c?.secondsLeft;
+    if (c == null || left == null || r == null || r.mediaId != c.mediaId || r.transport != 'finished') {
+      _stopCountdown();
+      return;
+    }
+    if (left > 1) {
+      countdown.value = UpNextCountdown(mediaId: c.mediaId, item: c.item, secondsLeft: left - 1);
+      return;
+    }
+    _timer?.cancel();
+    _timer = null;
+    _cancelledFor = c.mediaId;
+    countdown.value = UpNextCountdown(mediaId: c.mediaId, item: c.item);
+    // Decided on the latest state: only the app that can puts it up.
+    final head = r.queue.firstOrNull;
+    if (head != null && queuePerformer(head, r.members).id == _me) _perform(head);
+  }
+
+  void _stopCountdown() {
+    _timer?.cancel();
+    _timer = null;
+    countdown.value = null;
+  }
+
+  /// Puts [item] up from here (once per item while it is in flight).
+  /// When it cannot play after all, it is taken off with the reason.
+  void _perform(QueueItem item) {
+    if (_performing.containsKey(item.id)) return;
+    _performing[item.id] = DateTime.now();
+    unawaited(() async {
+      String? error;
+      try {
+        error = await _swapTo(item);
+      } catch (e) {
+        error = '$e';
+      }
+      if (error != null) {
+        debugPrint('queue: ${item.id} cannot go up: $error');
+        coord.sync.sendQueue(QueueIntent.remove(item.id, why: "couldn't play it ($error)"));
+      }
+    }());
+  }
+
+  Future<String?> _swapTo(QueueItem item) async {
+    switch (item.how) {
+      case QueueHow.jellyfin:
+        final ref = item.media.jellyfin;
+        final pick = ref == null ? null : pickForRef(coord.jellyfin, ref);
+        if (pick == null) return 'no Jellyfin account here for it';
+        coord.swapJellyfin(pick, queueId: item.id);
+        return null;
+      case QueueHow.direct:
+        final url = item.media.url;
+        if (url == null) return 'no link';
+        // Each viewer opens it: one computer's probe does not decide.
+        return coord.swapLink(url, relay: LinkRelay.direct, anyway: true, queueId: item.id);
+      case QueueHow.server:
+        coord.swapQueued(HelloMedia(name: item.title, size: 0, duration: 0, relay: const MediaRelay(fetch: true)),
+            item.id,
+            art: thumbs.bytesFor(item.thumb));
+        return null;
+      case QueueHow.through:
+      case QueueHow.file:
+        final local = _local[item.key];
+        if (local == null) return "it isn't on this computer any more";
+        // Only this app can pass it on, and a member sitting out has
+        // nothing open: back first.
+        if (coord.selfOut.peek()) coord.joinBack();
+        return coord.swapPicked(local.pick, queueId: item.id);
+    }
+  }
+
+  // ------------------------------------------------------------ warming
+
+  /// How long a warm result is kept, when it is resolved again, and when a
+  /// failed one is tried again.
+  static const _warmKeep = Duration(minutes: 35);
+  static const _warmRefresh = Duration(minutes: 30);
+  static const _warmRetry = Duration(minutes: 2);
+
+  String _warmKey = '';
+  String? _warmUrl;
+  Timer? _warmTimer;
+  int _warmGen = 0;
+  // What the preload player should hold once the media playing has
+  // started (null: nothing); [_preloadFresh]: open it again (a link's
+  // refresh).
+  ({String url, Map<String, String>? headers})? _preloadWant;
+  bool _preloadFresh = false;
+  String _preloadKey = '';
+  bool _preloadBusy = false;
+  bool _preloadOk = true;
+  int _preloadGen = 0;
+  StateBroadcast? _lastState;
+
+  bool _ownAccount(String serverId) =>
+      coord.jellyfin.account(serverId) != null && coord.jellyfin.statusOf(serverId) != JellyfinAccountStatus.expired;
+
+  /// What this app gets ready: Up next's first item, else (Up next empty)
+  /// the first continuation episode (only here when this app plays the
+  /// series with its own account). Every app does, each its own copy (see
+  /// [_WarmTarget]); while sitting out only the probe of a link this app
+  /// puts up (its swap reads it). Null: nothing.
+  _WarmTarget? _warmTarget(StateBroadcast? r) {
+    final t = _warmTargetHere(r);
+    if (t == null || !coord.selfOut.peek()) return t;
+    return t.probe == null ? null : _WarmTarget(t.id, probe: t.probe);
+  }
+
+  _WarmTarget? _warmTargetHere(StateBroadcast? r) {
+    if (r == null) return null;
+    final head = r.queue.firstOrNull;
+    if (head != null) {
+      final performer = queuePerformer(head, r.members).id == _me;
+      final local = _local[head.key]?.pick;
+      // The server's warm relay of the item, once bytes can flow: what
+      // everyone without their own copy preloads.
+      final relay = head.media.relay;
+      final warmUrl = relay != null && relay.live ? coord.warmRelayUrl(head, relay) : null;
+      switch (head.how) {
+        case QueueHow.jellyfin:
+          final ref = head.media.jellyfin;
+          if (ref == null) return null;
+          if (_ownAccount(ref.serverId)) return _WarmTarget(head.id, ref: ref);
+          // No account here: the server's login passes it on (`/j`), else
+          // the warm relay a member with an account feeds.
+          final open = r.relayNext ? coord.jellyfinRelayUrl(ref) : warmUrl;
+          return open == null ? null : _WarmTarget(head.id, open: open);
+        case QueueHow.direct:
+          final url = head.media.url;
+          if (url == null) return null;
+          return _WarmTarget(head.id, probe: performer ? url : null, open: url);
+        case QueueHow.through:
+          // Only its adder has the link (and feeds the warm relay).
+          if (!performer) return warmUrl == null ? null : _WarmTarget(head.id, open: warmUrl);
+          final url = local is LinkMedia ? local.url : null;
+          return _WarmTarget(head.id, probe: url, open: url);
+        case QueueHow.file:
+          if (!performer) return warmUrl == null ? null : _WarmTarget(head.id, open: warmUrl);
+          // The host's own file plays from its `/m` URL once it is up.
+          return _WarmTarget(head.id, open: local is FileMedia && coord.hostFile == null ? local.path : null);
+        case QueueHow.server:
+          // The server fetches it into its warm relay; everyone preloads that.
+          if (warmUrl != null) return _WarmTarget(head.id, open: warmUrl);
+          return performer ? _WarmTarget(head.id) : null;
+      }
+    }
+    final next = shownContinuation.peek().firstOrNull;
+    if (next == null) return null;
+    return _WarmTarget('next:${next.item.id}', ref: mediaForPick(next.pick).jellyfin);
+  }
+
+  /// Keeps the one item that plays next ready on this app, so a skip or
+  /// the end of what plays starts it at once: a link probed when this app
+  /// puts it up (`AppYtDlp.probe`, kept while it stays first), a Jellyfin
+  /// item resolved with this app's account
+  /// ([SessionCoordinator.warmJellyfin]), and then opened in the hidden
+  /// preload player ([SessionCoordinator.preloadMedia]) once the media
+  /// playing has started. Done as soon as it is first, again before that
+  /// runs out, dropped when it is no longer first.
+  void _warm(StateBroadcast? r) {
+    _feedWarm(r);
+    final t = _warmTarget(r);
+    final key = t?.key ?? '';
+    if (key != _warmKey) {
+      _dropWarm(r);
+      _warmKey = key;
+      if (t == null) {
+        if (warm.peek() != null) warm.value = null;
+      } else if (t.empty) {
+        warm.value = (id: t.id, state: WarmState.ready);
+      } else {
+        warm.value = (id: t.id, state: WarmState.warming);
+        _resolveWarm(t, fresh: false);
+      }
+    }
+    _syncPreload(r);
+  }
+
+  // The warm relay this app feeds (`<queue id>|<token>`), started once.
+  String _fedWarm = '';
+
+  /// Feeds the server's warm relay of Up next's first item from here when
+  /// it names this member as its source (a link passed on, a file), or a
+  /// Jellyfin item this app puts up with its own account when the server
+  /// asks for a source; see [SessionCoordinator.feedWarm]. The server
+  /// drops the relay (and with it the source) once the item is no longer
+  /// first.
+  void _feedWarm(StateBroadcast? r) {
+    final head = r?.queue.firstOrNull;
+    final relay = head?.media.relay;
+    if (r == null || head == null || relay == null || relay.fetch) return;
+    final key = '${head.id}|${coord.sync.token}';
+    if (key == _fedWarm) return;
+    switch (head.how) {
+      case QueueHow.through:
+      case QueueHow.file:
+        if (relay.source != _me) return;
+        final pick = _local[head.key]?.pick;
+        if (pick is FileMedia) {
+          _fedWarm = key;
+          coord.feedWarm(head.id, RelayMedia.single(FileRelayBytes(File(pick.path))));
+        } else if (pick is LinkMedia) {
+          _fedWarm = key;
+          unawaited(() async {
+            try {
+              // The probe [_resolveWarm] keeps: no second yt-dlp run.
+              final probe = await coord.ytDlp.probe(pick.url, keep: _warmKeep).timeout(const Duration(seconds: 60));
+              final y = await coord.ytDlp.ytDlp;
+              if (_fedWarm != key) return;
+              coord.feedWarm(head.id, LinkRelayMedia(Uri.parse(pick.url), ytDlp: y, probe: probe));
+            } catch (e) {
+              debugPrint('queue: feeding ${head.id}: $e');
+            }
+          }());
+        }
+      case QueueHow.jellyfin:
+        final ref = head.media.jellyfin;
+        if (ref == null || (relay.source.isNotEmpty && relay.source != _me)) return;
+        if (queuePerformer(head, r.members).id != _me) return;
+        // Resolved with this app's account by [_resolveWarm].
+        final w = coord.warmJellyfin;
+        if (w == null || !sameJellyfinItem(w.ref, ref)) return;
+        _fedWarm = key;
+        coord.feedWarm(
+            head.id, RelayMedia.single(HttpRelayBytes(Uri.parse(w.plan.url), headers: w.plan.headers)));
+      case QueueHow.direct:
+      case QueueHow.server:
+        return;
+    }
+  }
+
+  void _dropWarm(StateBroadcast? r) {
+    _warmTimer?.cancel();
+    _warmTimer = null;
+    _warmGen++;
+    _preloadWant = null;
+    final url = _warmUrl;
+    _warmUrl = null;
+    if (url != null) coord.ytDlp.release(url);
+    // Kept while it is what just went up: that open takes it.
+    final w = coord.warmJellyfin;
+    if (w != null && !sameJellyfinItem(w.ref, refOfStateMedia(r?.media))) coord.warmJellyfin = null;
+  }
+
+  void _resolveWarm(_WarmTarget t, {required bool fresh}) {
+    final gen = ++_warmGen;
+    unawaited(() async {
+      var ok = true;
+      ({String url, Map<String, String>? headers})? open;
+      try {
+        final probe = t.probe, ref = t.ref, url = t.open;
+        if (probe != null) {
+          _warmUrl = probe;
+          final p = await coord.ytDlp.probe(probe, keep: _warmKeep, fresh: fresh).timeout(const Duration(seconds: 60));
+          ok = p.problem == null;
+        }
+        if (ref != null) {
+          final plan = await resolveJellyfinRef(coord.jellyfin, ref, relay: false, relayUrl: null);
+          if (gen != _warmGen) return;
+          ok = plan is OwnPlay;
+          if (plan is OwnPlay) {
+            coord.warmJellyfin = (ref: ref, plan: plan, until: DateTime.now().add(_warmKeep));
+            open = (url: plan.url, headers: plan.headers);
+            _feedWarm(coord.serverState.peek());
+          }
+        } else if (url != null && ok) {
+          open = (url: url, headers: null);
+        }
+      } catch (e) {
+        ok = false;
+        debugPrint('queue: getting ${t.id} ready: $e');
+      }
+      if (gen != _warmGen) return;
+      _preloadWant = ok ? open : null;
+      // A refresh opens a link again (a page's stream URLs expire); the
+      // same Jellyfin stream stays as it is.
+      _preloadFresh = fresh && ok && t.ref == null && open != null;
+      final waits = ok && open != null && coord.playback.preloadEnabled;
+      warm.value = (id: t.id, state: !ok ? WarmState.failed : (waits ? WarmState.warming : WarmState.ready));
+      _syncPreload(coord.serverState.peek());
+      _warmTimer = Timer(ok ? _warmRefresh : _warmRetry, () => _resolveWarm(t, fresh: true));
+    }());
+  }
+
+  /// Puts [_preloadWant] in the preload player, or drops what it holds;
+  /// only once the media playing has started (its own open goes first,
+  /// and a preload a swap is about to take is never replaced before), at
+  /// once while sitting out (nothing preloads then).
+  void _syncPreload(StateBroadcast? r) {
+    // The newest state seen here: the coordinator's lags behind while the
+    // same `state` is still being handed to it.
+    final seen = _lastState;
+    if (r == null || (seen != null && seen.mediaId > r.mediaId)) r = seen;
+    if (r == null) return;
+    final out = coord.selfOut.peek();
+    if (!out && r.media != null && coord.settledMediaId.peek() != r.mediaId) return;
+    final want = out ? null : _preloadWant;
+    final playback = coord.playback;
+    if (want == null) {
+      _preloadKey = '';
+      _preloadGen++;
+      if (playback.preloadUrl != null) unawaited(playback.dropPreload());
+      return;
+    }
+    if (!playback.preloadEnabled) return;
+    final key = '${want.url}|${want.headers}';
+    final fresh = _preloadFresh;
+    // Asked for already: in flight, there, or failed (tried again with the
+    // next refresh). One that went away (Reload video) is asked again.
+    if (!fresh && key == _preloadKey && (_preloadBusy || !_preloadOk || playback.preloadUrl == want.url)) return;
+    _preloadFresh = false;
+    _preloadKey = key;
+    _preloadBusy = true;
+    final gen = ++_preloadGen;
+    final id = warm.peek()?.id;
+    unawaited(coord.preloadMedia(want.url, headers: want.headers, fresh: fresh).then((ok) {
+      if (gen != _preloadGen) return;
+      _preloadBusy = false;
+      _preloadOk = ok;
+      // A preload that fails leaves the usual open: nothing to say.
+      if (!ok) debugPrint('queue: preload of $id failed');
+      final w = warm.peek();
+      if (w != null && w.id == id && w.state == WarmState.warming) {
+        warm.value = (id: w.id, state: WarmState.ready);
+      }
+    }));
+  }
+
+  // -------------------------------------------------------- continuation
+
+  /// The next few episodes after the one playing (own account only).
+  Future<void> _loadContinuation(EpisodeLink? next, JellyfinPlan? plan) async {
+    if (next == null || plan is! OwnPlay) {
+      _continuationFor = '';
+      if (continuation.peek().isNotEmpty) continuation.value = const [];
+      return;
+    }
+    final key = '${plan.account.serverId}/${next.item.id}';
+    if (key == _continuationFor) return;
+    _continuationFor = key;
+    continuation.value = [next];
+    final seriesId = next.item.seriesId;
+    if (seriesId == null) return;
+    try {
+      final list = await coord.jellyfin.cached(
+          plan.account.serverId, 'episodes:$seriesId', () => plan.client.episodes(seriesId));
+      if (_continuationFor != key) return;
+      final more = [next];
+      var at = next.item;
+      while (more.length < 4) {
+        final after = episodeAfter(list, at.id);
+        if (after == null) break;
+        more.add(EpisodeLink(after, pickFor(plan.account, after)));
+        at = after;
+      }
+      continuation.value = more;
+    } catch (e) {
+      debugPrint('queue: continuation of $seriesId: $e');
+    }
+  }
+}
+
+/// What [QueueController] gets ready for one item on this app: [probe] a
+/// link (the app that puts it up), resolve [ref] with this app's own
+/// account, and preload [open] (or the resolved stream). None of it:
+/// nothing to do here, and it is ready ([empty]).
+class _WarmTarget {
+  final String id;
+  final String? probe;
+  final JellyfinRef? ref;
+  final String? open;
+  const _WarmTarget(this.id, {this.probe, this.ref, this.open});
+
+  bool get empty => probe == null && ref == null && open == null;
+  String get key => '$id|$probe|$open|${ref?.serverId}/${ref?.itemId}/${ref?.mediaSourceId}';
+}

apps/desktop/lib/src/queue/queue_logic.dart

@@ -0,0 +1,76 @@
+import 'package:sync_relay_core/core.dart';
+
+import '../jellyfin/session_media.dart' show compareMemberIds;
+
+// Who puts an Up next item up. Pure: only what every client sees in
+// `state` decides, so all clients agree without a wire message (like the
+// Jellyfin auto-advance swapper).
+
+/// Who puts [item] up: [id] a member id; null with [why] when nobody here
+/// can (the item is skipped), null without [why] when nobody is around
+/// right now (nothing happens).
+typedef QueuePerformer = ({String? id, String? why});
+
+/// - A link passed on by its adder, or the adder's file: only the adder
+///   (their app has the file, the cookies). Gone: skipped.
+/// - Jellyfin: the adder when it plays that server with its own account,
+///   else the lowest member id that does (`jf[serverId] == true`, not
+///   stale, not sitting out). Nobody: skipped.
+/// - A link everyone opens, or one the server fetches: the adder when
+///   present (not stale or sitting out), else the lowest such member id.
+QueuePerformer queuePerformer(QueueItem item, List<MemberView> members) {
+  MemberView? adder;
+  for (final m in members) {
+    if (m.id == item.by) adder = m;
+  }
+  bool active(MemberView m) => !m.stale && !m.out;
+  if (item.how.adderOnly) {
+    if (adder == null) return (id: null, why: '${_name(item)} left');
+    return (id: adder.id, why: null);
+  }
+  final ref = item.media.jellyfin;
+  if (item.how == QueueHow.jellyfin && ref != null) {
+    bool can(MemberView m) => active(m) && m.jf[ref.serverId] == true;
+    if (adder != null && can(adder)) return (id: adder.id, why: null);
+    final id = autoAdvanceLowest(members.where(can));
+    return id == null ? (id: null, why: 'nobody here has that Jellyfin server') : (id: id, why: null);
+  }
+  if (adder != null && active(adder)) return (id: adder.id, why: null);
+  return (id: autoAdvanceLowest(members.where(active)), why: null);
+}
+
+String _name(QueueItem item) => item.byName.isEmpty ? 'who added it' : item.byName;
+
+/// The lowest member id of [members] ("m2" before "m10"), or null.
+String? autoAdvanceLowest(Iterable<MemberView> members) {
+  final ids = [for (final m in members) m.id]..sort(compareMemberIds);
+  return ids.isEmpty ? null : ids.first;
+}
+
+/// Who takes an item nobody can put up off the queue (`remove` with why):
+/// the lowest member id that is not stale.
+String? queueJanitor(List<MemberView> members) => autoAdvanceLowest(members.where((m) => !m.stale));
+
+/// How [item] plays, in a few words for its row: "through Foxyz" (you:
+/// "through you"), "server fetches", "everyone fetches", "Jellyfin",
+/// "Foxyz's file".
+String queueHowLabel(QueueItem item, {required String selfId}) {
+  final mine = item.by == selfId && selfId.isNotEmpty;
+  final who = mine ? 'you' : _name(item);
+  return switch (item.how) {
+    QueueHow.through => 'through $who',
+    QueueHow.file => mine ? 'your file' : "$who's file",
+    QueueHow.server => 'server fetches',
+    QueueHow.direct => 'everyone fetches',
+    QueueHow.jellyfin => 'Jellyfin',
+  };
+}
+
+/// "1:23:45" / "23:45" for [secs]; empty when unknown.
+String queueClock(double secs) {
+  if (secs <= 0) return '';
+  final s = secs.round();
+  final h = s ~/ 3600, m = (s % 3600) ~/ 60, r = s % 60;
+  String two(int v) => v.toString().padLeft(2, '0');
+  return h > 0 ? '$h:${two(m)}:${two(r)}' : '$m:${two(r)}';
+}

apps/desktop/lib/src/schedule/anilist.dart

@@ -6,7 +6,6 @@ import 'dart:ui' show Color;
 import 'package:path_provider/path_provider.dart';
 import 'package:sync_relay_core/core.dart';
 
-import '../update/updater.dart' show appVersion;
 
 // AniList airing schedule (public GraphQL, no login): every episode airing
 // in a time range, with covers, banners and popularity; and a title search

apps/desktop/lib/src/schedule/animeflow.dart

@@ -5,7 +5,6 @@ import 'dart:io';
 import 'package:sync_relay_core/core.dart';
 
 import '../jellyfin/accounts.dart';
-import '../update/updater.dart' show appVersion;
 
 // AnimeFlow app API: what the media server tracks, has, downloads and was
 // asked for. Authenticated with the user's own Jellyfin access token
@@ -148,13 +147,17 @@ class AnimeFlowLibraryItem {
   final String name;
   /// Set when AnimeFlow tracks it.
   final int? seriesId;
-  /// AniList entry per TVDB season.
+  /// AniList entry per TVDB season (the first, when a season spans more).
   final Map<int, int> anilistIds;
+  /// Every AniList entry per season with its episode run (`anilist_map`):
+  /// a season AniList splits (one cour as two entries) has several rows.
+  final List<AniListRun> anilistMap;
   const AnimeFlowLibraryItem({
     required this.jellyfinSeriesId,
     required this.name,
     this.seriesId,
     this.anilistIds = const {},
+    this.anilistMap = const [],
   });
 
   static AnimeFlowLibraryItem fromJson(Map j) => AnimeFlowLibraryItem(
@@ -165,15 +168,38 @@ class AnimeFlowLibraryItem {
           for (final e in ((j['anilist_ids'] as Map?) ?? const {}).entries)
             if (int.tryParse('${e.key}') case final season? when _int(e.value) != null) season: _int(e.value)!,
         },
+        anilistMap: [
+          for (final r in (j['anilist_map'] as List?) ?? const [])
+            if (r is Map && _int(r['season']) != null && _int(r['anilist_id']) != null)
+              AniListRun(
+                season: _int(r['season'])!,
+                anilistId: _int(r['anilist_id'])!,
+                firstEpisode: _int(r['first_episode']) ?? 1,
+                offset: _int(r['offset']) ?? 0,
+              ),
+        ],
       );
 }
 
+/// One AniList entry's run within a TVDB season: TVDB episode e (from
+/// [firstEpisode] to the next run of that season) is AniList episode
+/// e - [offset].
+class AniListRun {
+  final int season;
+  final int anilistId;
+  final int firstEpisode;
+  final int offset;
+  const AniListRun({required this.season, required this.anilistId, this.firstEpisode = 1, this.offset = 0});
+}
+
 class AnimeFlowEpisode {
   /// 0 = specials.
   final int season;
   final int episode;
   final int? absolute;
   final String? title;
+  /// Date-only: midnight Japan time of the broadcast day. Compare it as a
+  /// Japan day (`sameAirDay` in schedule_model.dart), never a local one.
   final DateTime? airDate;
   /// The AniList entry of this episode's season (one AnimeFlow series may
   /// span several AniList entries).
@@ -184,8 +210,11 @@ class AnimeFlowEpisode {
   final EpisodeStatus status;
   /// 0..1, only while downloading.
   final double? progress;
-  /// Only when failed.
+  /// Why it failed; for a missing one with rejected releases, a
+  /// ready-to-show sentence ("2 release(s) found, rejected: …").
   final String? reason;
+  /// Last search for a monitored, not yet downloaded episode.
+  final DateTime? lastSearchedAt;
 
   const AnimeFlowEpisode({
     required this.season,
@@ -198,6 +227,7 @@ class AnimeFlowEpisode {
     required this.status,
     this.progress,
     this.reason,
+    this.lastSearchedAt,
   });
 
   static AnimeFlowEpisode fromJson(Map j) => AnimeFlowEpisode(
@@ -206,11 +236,14 @@ class AnimeFlowEpisode {
         absolute: _int(j['absolute']),
         title: _str(j['episode_title']),
         airDate: _time(j['air_date']),
-        anilistId: _int(j['anilist_id']),
+        // The episode's own entry (a split season rolls into its sequel),
+        // else the series' one.
+        anilistId: _int(j['episode_anilist_id']) ?? _int(j['anilist_id']),
         anilistEpisode: _int(j['anilist_episode']),
         status: EpisodeStatus.parse(j['status']),
         progress: (j['progress'] as num?)?.toDouble(),
         reason: _str(j['reason']),
+        lastSearchedAt: _time(j['last_searched_at']),
       );
 }
 
@@ -222,7 +255,6 @@ class AnimeFlowScheduleItem {
   final int? anidbId;
   final int? tvdbId;
   final String? jellyfinSeriesId;
-  final bool followed;
 
   const AnimeFlowScheduleItem({
     required this.episode,
@@ -231,7 +263,6 @@ class AnimeFlowScheduleItem {
     this.anidbId,
     this.tvdbId,
     this.jellyfinSeriesId,
-    this.followed = false,
   });
 
   static AnimeFlowScheduleItem fromJson(Map j) => AnimeFlowScheduleItem(
@@ -241,7 +272,6 @@ class AnimeFlowScheduleItem {
         anidbId: _int(j['anidb_id']),
         tvdbId: _int(j['tvdb_id']),
         jellyfinSeriesId: _str(j['jellyfin_series_id']),
-        followed: j['followed'] == true,
       );
 }
 
@@ -270,7 +300,6 @@ class AnimeFlowSeries {
   final String? jellyfinSeriesId;
   final SeriesState state;
   final bool monitored;
-  final bool followed;
   final int episodesTotal;
   final int episodesAvailable;
   final DateTime? nextAirDate;
@@ -286,7 +315,6 @@ class AnimeFlowSeries {
     this.jellyfinSeriesId,
     this.state = SeriesState.releasing,
     this.monitored = false,
-    this.followed = false,
     this.episodesTotal = 0,
     this.episodesAvailable = 0,
     this.nextAirDate,
@@ -302,7 +330,6 @@ class AnimeFlowSeries {
         jellyfinSeriesId: _str(j['jellyfin_series_id']),
         state: SeriesState.parse(j['state']),
         monitored: j['monitored'] == true,
-        followed: j['followed'] == true,
         episodesTotal: _int(j['episodes_total']) ?? 0,
         episodesAvailable: _int(j['episodes_available']) ?? 0,
         nextAirDate: _time(j['next_air_date']),
@@ -658,10 +685,6 @@ class AnimeFlowClient {
     return AnimeFlowSeries.fromJson(j is Map ? j : const {});
   }
 
-  /// Follow (or unfollow) a series [view].
-  Future<void> setFollowed(int seriesId, bool followed) =>
-      _call(followed ? 'PUT' : 'DELETE', '/series/$seriesId/follow');
-
   /// Titles that can be requested [request].
   Future<List<AnimeFlowSearchHit>> search(String q) async => [
         for (final h in _items(await _call('GET', '/search', query: {'q': q}))) AnimeFlowSearchHit.fromJson(h),

apps/desktop/lib/src/schedule/schedule_model.dart

@@ -12,14 +12,25 @@ enum ScheduleStatus {
   available,
   downloading,
   upcoming,
+  /// AnimeFlow's `missing`: aired, monitored, no release grabbed yet;
+  /// AnimeFlow grabs it by itself once one appears (nothing to request).
+  /// Also an aired episode of a tracked series AnimeFlow has no row for.
   missing,
   failed,
+  /// AnimeFlow does not monitor it: the only status worth a Request.
   unmonitored,
   /// AnimeFlow does not track this series (or is unreachable).
   notTracked,
-  /// Not tracked by AnimeFlow, but the series is on Jellyfin (`/library`):
-  /// the episode may be there; Put it up finds out.
-  inLibrary;
+  /// Not tracked by AnimeFlow, the series is on Jellyfin (`/library`) and
+  /// so is the episode ([confirmOnJellyfin]; [matchSchedule] alone sets
+  /// it from the series).
+  inLibrary,
+  /// Not tracked, the series is on Jellyfin, the episode aired but is not
+  /// there yet.
+  notOnJellyfin,
+  /// Not tracked, the series is on Jellyfin, the episode aired; whether
+  /// it is there is unknown (no linked account, lookup failed).
+  aired;
 
   static ScheduleStatus of(EpisodeStatus s) => switch (s) {
         EpisodeStatus.available => available,
@@ -37,17 +48,26 @@ class ScheduleEntry {
   final ScheduleStatus status;
   /// 0..1 while downloading.
   final double? progress;
-  /// Why it failed.
+  /// Why it failed, or (missing) why the releases found were rejected.
   final String? reason;
+  /// AnimeFlow's last search for it (missing).
+  final DateTime? lastSearchedAt;
   /// AnimeFlow tracks the series.
   final bool tracked;
-  final bool followed;
-  /// AnimeFlow's series id (follow, requests).
+  /// AnimeFlow's series id (requests).
   final int? seriesId;
-  /// The AnimeFlow season of the matched episode (requests).
+  /// The AnimeFlow season of the matched episode (requests); untracked
+  /// on Jellyfin: the TVDB season of the AniList entry.
   final int? season;
+  /// The TVDB episode number in [season]: tracked, AnimeFlow's own;
+  /// untracked on Jellyfin, AniList episode + the `anilist_map` run's
+  /// offset.
+  final int? jellyfinEpisode;
   /// Play target once available.
   final String? jellyfinSeriesId;
+  /// This user's progress on the Jellyfin episode ([confirmOnJellyfin]);
+  /// null when it is not on Jellyfin or was not looked up.
+  final EpisodeWatch? watch;
   /// The series is on Jellyfin (tracked or not).
   bool get onJellyfin => jellyfinSeriesId != null;
 
@@ -56,13 +76,29 @@ class ScheduleEntry {
     required this.status,
     this.progress,
     this.reason,
+    this.lastSearchedAt,
     this.tracked = false,
-    this.followed = false,
     this.seriesId,
     this.season,
+    this.jellyfinEpisode,
     this.jellyfinSeriesId,
+    this.watch,
   });
 
+  ScheduleEntry copyWith({ScheduleStatus? status, EpisodeWatch? watch}) => ScheduleEntry(
+        airing: airing,
+        status: status ?? this.status,
+        progress: progress,
+        reason: reason,
+        lastSearchedAt: lastSearchedAt,
+        tracked: tracked,
+        seriesId: seriesId,
+        season: season,
+        jellyfinEpisode: jellyfinEpisode,
+        jellyfinSeriesId: jellyfinSeriesId,
+        watch: watch ?? this.watch,
+      );
+
   @override
   String toString() => 'ScheduleEntry(${airing.anilistId}#${airing.episode} $status)';
 }
@@ -73,16 +109,63 @@ ScheduleEntry untrackedEntry(Airing a, DateTime now) => ScheduleEntry(
       status: a.airingAt.isAfter(now) ? ScheduleStatus.upcoming : ScheduleStatus.notTracked,
     );
 
-String _day(DateTime d) {
-  final l = d.toLocal();
-  return '${l.year}-${l.month}-${l.day}';
+/// This user's state of a Jellyfin episode (its `UserData`).
+class EpisodeWatch {
+  final bool played;
+  /// 0..1: the resume point of a partly watched episode (0 = none).
+  final double progress;
+  const EpisodeWatch({this.played = false, this.progress = 0});
+
+  @override
+  bool operator ==(Object other) => other is EpisodeWatch && other.played == played && other.progress == progress;
+  @override
+  int get hashCode => Object.hash(played, progress);
+  @override
+  String toString() => 'EpisodeWatch(${played ? 'played' : '$progress'})';
 }
 
+/// One episode Jellyfin has of a series, as the schedule needs it.
+class JellyfinEpisodeRef {
+  final int season;
+  final int episode;
+  /// Jellyfin's date-only premiere date.
+  final DateTime? premiere;
+  final EpisodeWatch watch;
+  const JellyfinEpisodeRef(this.season, this.episode, {this.premiere, this.watch = const EpisodeWatch()});
+}
+
+// Air dates (AnimeFlow's `air_date`, Jellyfin's premiere date) are
+// date-only: the Japanese broadcast day, sent as midnight Japan time (or
+// midnight UTC by older servers). Both land on the right day read as a
+// Japan (UTC+9, no DST) calendar day, never as a local one: midnight JST
+// is the evening before in Europe and America.
+const _jst = Duration(hours: 9);
+
+/// The Japan calendar day of [t].
+DateTime _jstDay(DateTime t) {
+  final j = t.toUtc().add(_jst);
+  return DateTime.utc(j.year, j.month, j.day);
+}
+
+String _dayKey(DateTime d) => '${d.year}-${d.month}-${d.day}';
+
+/// The Japan days whose air date fits a broadcast at [airingAt]: its own
+/// and, for a late-night slot (before 05:00 JST, "25:30"), the evening
+/// before, which listings often give.
+List<DateTime> _airDays(DateTime airingAt) {
+  final j = airingAt.toUtc().add(_jst);
+  final d = DateTime.utc(j.year, j.month, j.day);
+  return [d, if (j.hour < 5) DateTime.utc(j.year, j.month, j.day - 1)];
+}
+
+/// The date-only [airDate] is the broadcast day of [airingAt] (see
+/// [_airDays]).
+bool sameAirDay(DateTime airDate, DateTime airingAt) => _airDays(airingAt).contains(_jstDay(airDate));
+
 class _SeriesRef {
   final int seriesId;
   final String? jellyfinSeriesId;
-  bool followed;
-  _SeriesRef(this.seriesId, this.jellyfinSeriesId, this.followed);
+  _SeriesRef(this.seriesId, this.jellyfinSeriesId);
 }
 
 /// Merges AniList [airings] with AnimeFlow's [schedule] rows and tracked
@@ -98,51 +181,66 @@ List<ScheduleEntry> matchSchedule(
   DateTime? now,
 }) {
   final at = now ?? DateTime.now();
-  // AniList id -> (Jellyfin series, its TVDB season) from /library.
-  final lib = <int, (String, int)>{};
+  // AniList id -> (Jellyfin series, its TVDB season, TVDB - AniList
+  // episode offset) from /library.
+  final lib = <int, (String, int, int)>{};
   for (final item in library) {
     if (item.jellyfinSeriesId.isEmpty) continue;
+    for (final r in item.anilistMap) {
+      lib[r.anilistId] ??= (item.jellyfinSeriesId, r.season, r.offset);
+    }
     for (final e in item.anilistIds.entries) {
-      lib[e.value] ??= (item.jellyfinSeriesId, e.key);
+      lib[e.value] ??= (item.jellyfinSeriesId, e.key, 0);
     }
   }
   final refs = <int, _SeriesRef>{};
   for (final s in series) {
     final id = s.anilistId;
-    if (id != null) refs[id] ??= _SeriesRef(s.seriesId, s.jellyfinSeriesId, s.followed);
+    if (id != null) refs[id] ??= _SeriesRef(s.seriesId, s.jellyfinSeriesId);
   }
+  // AnimeFlow's AniList episode number wins outright: TVDB numbering runs
+  // on across split entries (JoJo S6E4 is "2nd & 3rd STAGE" ep 3), so a TVDB
+  // or absolute number, or an air day, is only a guess for AniList entries
+  // AnimeFlow gives no AniList numbers for.
+  final byAni = <String, AnimeFlowScheduleItem>{};
   final byEp = <String, AnimeFlowScheduleItem>{};
   final byAbs = <String, AnimeFlowScheduleItem>{};
   final byDay = <String, AnimeFlowScheduleItem>{};
+  final numbered = <int>{};
   for (final it in schedule) {
     final e = it.episode, id = e.anilistId;
     if (id == null) continue;
-    final ref = refs[id] ??= _SeriesRef(it.seriesId, it.jellyfinSeriesId, it.followed);
-    if (it.followed) ref.followed = true;
-    // AnimeFlow's AniList episode number first: TVDB numbering can run on
-    // across split cours.
-    if (e.anilistEpisode != null) byEp.putIfAbsent('$id#${e.anilistEpisode}', () => it);
+    refs[id] ??= _SeriesRef(it.seriesId, it.jellyfinSeriesId);
+    if (e.anilistEpisode != null) {
+      numbered.add(id);
+      byAni.putIfAbsent('$id#${e.anilistEpisode}', () => it);
+    }
     byEp.putIfAbsent('$id#${e.episode}', () => it);
     if (e.absolute != null) byAbs.putIfAbsent('$id#${e.absolute}', () => it);
-    if (e.airDate != null) byDay.putIfAbsent('$id@${_day(e.airDate!)}', () => it);
+    if (e.airDate != null) byDay.putIfAbsent('$id@${_dayKey(_jstDay(e.airDate!))}', () => it);
   }
   return [
     for (final a in airings)
       () {
         final id = a.anilistId;
         final ref = refs[id];
-        final it = byEp['$id#${a.episode}'] ?? byAbs['$id#${a.episode}'] ?? byDay['$id@${_day(a.airingAt)}'];
+        final it = numbered.contains(id)
+            ? byAni['$id#${a.episode}']
+            : byEp['$id#${a.episode}'] ??
+                byAbs['$id#${a.episode}'] ??
+                _airDays(a.airingAt).map((d) => byDay['$id@${_dayKey(d)}']).nonNulls.firstOrNull;
         if (it != null) {
           final e = it.episode;
           return ScheduleEntry(
             airing: a,
             status: ScheduleStatus.of(e.status),
             progress: e.status == EpisodeStatus.downloading ? e.progress : null,
-            reason: e.status == EpisodeStatus.failed ? e.reason : null,
+            reason: e.status == EpisodeStatus.failed || e.status == EpisodeStatus.missing ? e.reason : null,
+            lastSearchedAt: e.lastSearchedAt,
             tracked: true,
-            followed: it.followed || (ref?.followed ?? false),
             seriesId: it.seriesId,
             season: e.season,
+            jellyfinEpisode: e.episode,
             jellyfinSeriesId: it.jellyfinSeriesId ?? ref?.jellyfinSeriesId ?? lib[id]?.$1,
           );
         }
@@ -153,6 +251,7 @@ List<ScheduleEntry> matchSchedule(
             airing: a,
             status: a.airingAt.isAfter(at) ? ScheduleStatus.upcoming : ScheduleStatus.inLibrary,
             season: onJf.$2,
+            jellyfinEpisode: a.episode + onJf.$3,
             jellyfinSeriesId: onJf.$1,
           );
         }
@@ -160,7 +259,6 @@ List<ScheduleEntry> matchSchedule(
           airing: a,
           status: a.airingAt.isAfter(at) ? ScheduleStatus.upcoming : ScheduleStatus.missing,
           tracked: true,
-          followed: ref.followed,
           seriesId: ref.seriesId,
           jellyfinSeriesId: ref.jellyfinSeriesId ?? lib[id]?.$1,
         );
@@ -168,6 +266,46 @@ List<ScheduleEntry> matchSchedule(
   ];
 }
 
+/// The episodes [confirmOnJellyfin] looks up: on Jellyfin, untracked
+/// ([ScheduleStatus.inLibrary]) or available through AnimeFlow.
+bool needsJellyfinLookup(ScheduleEntry e) =>
+    e.jellyfinSeriesId != null && (e.status == ScheduleStatus.inLibrary || e.status == ScheduleStatus.available);
+
+/// Checks [matchSchedule]'s entries against the episodes Jellyfin has:
+/// [episodes] maps a Jellyfin series id to its episodes. An
+/// [ScheduleStatus.inLibrary] one found stays inLibrary, absent becomes
+/// [ScheduleStatus.notOnJellyfin], a series missing from [episodes] (not
+/// looked up) [ScheduleStatus.aired]. Found episodes (inLibrary or
+/// available) get this user's [ScheduleEntry.watch]: (season, episode),
+/// else the one premiered that day.
+List<ScheduleEntry> confirmOnJellyfin(List<ScheduleEntry> entries, Map<String, List<JellyfinEpisodeRef>> episodes) => [
+      for (final e in entries)
+        if (!needsJellyfinLookup(e))
+          e
+        else
+          switch ((episodes[e.jellyfinSeriesId], e.status)) {
+            (null, ScheduleStatus.inLibrary) => e.copyWith(status: ScheduleStatus.aired),
+            (null, _) => e,
+            (final have?, _) => switch (_episodeOf(have, e)) {
+                final x? => e.copyWith(watch: x.watch),
+                null when e.status == ScheduleStatus.inLibrary => e.copyWith(status: ScheduleStatus.notOnJellyfin),
+                null => e,
+              },
+          },
+    ];
+
+JellyfinEpisodeRef? _episodeOf(List<JellyfinEpisodeRef> have, ScheduleEntry e) {
+  final byNumber = have.where((x) => x.season == e.season && x.episode == e.jellyfinEpisode).firstOrNull;
+  if (byNumber != null || !e.tracked) return byNumber;
+  // AnimeFlow's numbering missed (specials, renumbered seasons): the
+  // episode premiered that day, when only one did.
+  return have.where((x) => x.premiere != null && sameAirDay(x.premiere!, e.airing.airingAt)).singleOrNull;
+}
+
+/// The episodes Jellyfin has of a series, as the linked account sees
+/// them; null when it cannot tell (no linked account for that server).
+typedef JellyfinEpisodeLookup = Future<List<JellyfinEpisodeRef>?> Function(String jellyfinSeriesId);
+
 /// One loaded window. Errors are display text; [entries] is empty only
 /// when AniList failed with nothing cached.
 class ScheduleSnapshot {
@@ -203,12 +341,16 @@ class ScheduleSnapshot {
 
 /// Loads AniList and AnimeFlow for a window and merges them.
 class ScheduleRepository {
-  ScheduleRepository({required this.aniList, this.animeFlow, DateTime Function()? now})
+  ScheduleRepository({required this.aniList, this.animeFlow, this.jellyfinEpisodes, DateTime Function()? now})
       : _now = now ?? DateTime.now;
 
   final AniListClient aniList;
   /// Null = not configured (AniList only).
   final AnimeFlowClient? animeFlow;
+  /// Confirms "on Jellyfin" and this user's watched state per episode
+  /// ([confirmOnJellyfin]); null = never confirmed (aired entries read
+  /// [ScheduleStatus.aired], nothing shows as watched).
+  final JellyfinEpisodeLookup? jellyfinEpisodes;
   final DateTime Function() _now;
 
   /// Last week's Monday 00:00 local .. 4 weeks later.
@@ -233,7 +375,8 @@ class ScheduleRepository {
     final flow = await flowF;
     final airings = [...ani.airings]..sort((a, b) => a.airingAt.compareTo(b.airingAt));
     final entries = flow.error == null
-        ? matchSchedule(airings, schedule: flow.schedule, series: flow.series, library: flow.library, now: now)
+        ? await _confirm(
+            matchSchedule(airings, schedule: flow.schedule, series: flow.series, library: flow.library, now: now))
         : [for (final a in airings) untrackedEntry(a, now)];
     return ScheduleSnapshot(
       from: start,
@@ -246,6 +389,27 @@ class ScheduleRepository {
     );
   }
 
+  /// Looks up the episodes of every series an entry on Jellyfin is on
+  /// ([needsJellyfinLookup]), in parallel, one request per series; a
+  /// failed or impossible lookup leaves that series out.
+  Future<List<ScheduleEntry>> _confirm(List<ScheduleEntry> entries) async {
+    final lookup = jellyfinEpisodes;
+    final ids = {
+      for (final e in entries)
+        if (needsJellyfinLookup(e)) e.jellyfinSeriesId!,
+    };
+    final found = <String, List<JellyfinEpisodeRef>>{};
+    if (lookup != null) {
+      await Future.wait([
+        for (final id in ids)
+          lookup(id).then((eps) {
+            if (eps != null) found[id] = eps;
+          }, onError: (_) {}),
+      ]);
+    }
+    return confirmOnJellyfin(entries, found);
+  }
+
   Future<({AnimeFlowMe? me, List<AnimeFlowScheduleItem> schedule, List<AnimeFlowSeries> series, List<AnimeFlowLibraryItem> library, Object? error})>
       _animeFlow(DateTime from, DateTime to, bool force) async {
     final c = animeFlow;

apps/desktop/lib/src/schedule/ui/schedule_actions.dart

@@ -1,7 +1,7 @@
 import 'package:sync_relay_core/core.dart';
 
 import '../../jellyfin/accounts.dart';
-import '../../jellyfin/format.dart' show pickFor;
+import '../../jellyfin/format.dart' show pickFor, progressOf;
 import '../../screens/home/picked_media.dart';
 import '../anilist.dart';
 import '../animeflow.dart';
@@ -47,14 +47,9 @@ String friendlyError(Object e) => switch (e) {
   _ => '$e',
 };
 
-bool _sameDay(DateTime a, DateTime b) {
-  final x = a.toLocal(), y = b.toLocal();
-  return x.year == y.year && x.month == y.month && x.day == y.day;
-}
-
 /// AnimeFlow's episode for [e] (its season and numbering), from the
 /// series detail: same AniList id and episode, else absolute number, else
-/// the same air day. Null when the entry is not tracked or nothing fits.
+/// the same air day ([sameAirDay]). Null when the entry is not tracked or nothing fits.
 Future<AnimeFlowEpisode?> flowEpisodeFor(AnimeFlowClient client, ScheduleEntry e) async {
   final id = e.seriesId;
   if (id == null) return null;
@@ -63,7 +58,7 @@ Future<AnimeFlowEpisode?> flowEpisodeFor(AnimeFlowClient client, ScheduleEntry e
   final mine = eps.where((x) => x.anilistId == null || x.anilistId == a.anilistId).toList();
   return mine.where((x) => x.anilistId == a.anilistId && x.episode == a.episode).firstOrNull ??
       mine.where((x) => x.absolute == a.episode).firstOrNull ??
-      mine.where((x) => x.airDate != null && _sameDay(x.airDate!, a.airingAt)).firstOrNull;
+      mine.where((x) => x.airDate != null && sameAirDay(x.airDate!, a.airingAt)).firstOrNull;
 }
 
 /// The (season, episode) AnimeFlow uses for [e]; falls back to the
@@ -78,7 +73,7 @@ Future<({int season, int episode})> flowNumbering(AnimeFlowClient? client, Sched
     }
   }
   if (ep != null) return (season: ep.season, episode: ep.episode);
-  return (season: e.season ?? 1, episode: e.airing.episode);
+  return (season: e.season ?? 1, episode: e.jellyfinEpisode ?? e.airing.episode);
 }
 
 /// The AniDB id of an untracked AniList entry, from AnimeFlow's search:
@@ -112,6 +107,37 @@ JellyfinAccount? jellyfinAccountFor(JellyfinAccounts accounts, AnimeFlowClient?
   return accounts.defaultAccount;
 }
 
+/// The episodes Jellyfin has of [jellyfinSeriesId] (numbers, premiere
+/// date, this user's watched state), seen by the account AnimeFlow's ids
+/// belong to ([jellyfinAccountFor]): the user's own; null without a
+/// linked account. One request per series, memoised a few minutes
+/// ([JellyfinAccounts.cached]; a stop report drops it,
+/// [JellyfinAccounts.watched]).
+Future<List<JellyfinEpisodeRef>?> jellyfinScheduleEpisodes(
+  JellyfinAccounts accounts,
+  AnimeFlowClient? flow,
+  String jellyfinSeriesId,
+) async {
+  await accounts.ensureLoaded(validate: false);
+  final account = jellyfinAccountFor(accounts, flow);
+  final client = account == null ? null : accounts.clientFor(account.serverId);
+  if (account == null || client == null) return null;
+  return accounts.cached(
+    account.serverId,
+    'schedule-episodes:$jellyfinSeriesId',
+    () async => [
+      for (final x in await client.episodes(jellyfinSeriesId))
+        if (x.parentIndexNumber != null && x.indexNumber != null)
+          JellyfinEpisodeRef(
+            x.parentIndexNumber!,
+            x.indexNumber!,
+            premiere: x.premiereDate,
+            watch: EpisodeWatch(played: x.userData.played, progress: x.userData.played ? 0 : progressOf(x)),
+          ),
+    ],
+  );
+}
+
 /// The Jellyfin episode of an available [e] as a media pick. Throws
 /// [ScheduleActionException] (or a client error) when it cannot be found.
 Future<JellyfinMedia> resolveJellyfinEpisode(JellyfinAccounts accounts, AnimeFlowClient? flow, ScheduleEntry e) async {
@@ -134,7 +160,7 @@ Future<JellyfinMedia> resolveJellyfinEpisode(JellyfinAccounts accounts, AnimeFlo
   final a = e.airing;
   final item =
       eps.where((x) => x.parentIndexNumber == n.season && x.indexNumber == n.episode).firstOrNull ??
-      eps.where((x) => x.premiereDate != null && _sameDay(x.premiereDate!, a.airingAt)).singleOrNull ??
+      eps.where((x) => x.premiereDate != null && sameAirDay(x.premiereDate!, a.airingAt)).singleOrNull ??
       eps.where((x) => x.indexNumber == a.episode).singleOrNull;
   if (item == null) {
     throw ScheduleActionException('Episode ${a.episode} of ${a.title} is not on Jellyfin yet');

apps/desktop/lib/src/schedule/ui/schedule_card.dart

@@ -4,17 +4,17 @@ import 'package:flutter/material.dart';
 import '../schedule_model.dart';
 
 // One day of the Schedule board and its airing cards: cover poster on the
-// left (air time on it, download progress under it), title, episode and
-// status on the right, one full-width action below. Compact mode is a
-// slim row.
+// left (air time on it, download progress or this user's watch progress
+// under it, a check once watched), title, episode and status on the
+// right, one full-width action below. Compact mode is a slim row.
 
 /// What a card's action does, decided by the page.
 enum CardAction {
   none,
   putUp,
 
-  /// Available, but not in a server: shown disabled with a hint.
-  playOffline,
+  /// Available, nobody else watching (offline or solo): plays it here.
+  play,
   request,
   requestSeries,
   requested,
@@ -35,8 +35,29 @@ String countdownText(DateTime at, DateTime now) {
   return 'in ${d.inMinutes}m';
 }
 
+/// Aired, tracked, no release yet: AnimeFlow downloads it by itself.
+bool _waiting(ScheduleEntry e, DateTime now) =>
+    e.status == ScheduleStatus.missing ||
+    (e.status == ScheduleStatus.upcoming && e.tracked && !e.airing.airingAt.isAfter(now));
+
+const waitingHint = 'Aired in Japan; downloads automatically when a release appears';
+
+String _ago(DateTime t, DateTime now) {
+  final m = now.difference(t).inMinutes;
+  return m < 1 ? 'just now' : m < 60 ? '$m min ago' : '${m ~/ 60} h ago';
+}
+
 /// Status line: text, colour, icon.
-(String, Color, IconData) statusBadge(ScheduleEntry e, DateTime now) => switch (e.status) {
+(String, Color, IconData) statusBadge(ScheduleEntry e, DateTime now) => _waiting(e, now)
+    ? e.reason != null
+        // Releases exist but AnimeFlow rejected them (the hint says why).
+        ? ('release rejected', Colors.orangeAccent, Icons.block)
+        : (
+            e.lastSearchedAt == null ? 'waiting for release' : 'waiting · searched ${_ago(e.lastSearchedAt!, now)}',
+            Colors.amber.shade200,
+            Icons.hourglass_top,
+          )
+    : switch (e.status) {
         ScheduleStatus.available => ('on Jellyfin', Colors.greenAccent, Icons.check_circle),
         ScheduleStatus.downloading => (
           e.progress == null ? 'downloading' : 'downloading ${(e.progress! * 100).round()}%',
@@ -44,13 +65,26 @@ String countdownText(DateTime at, DateTime now) {
           Icons.downloading,
         ),
         ScheduleStatus.upcoming => (countdownText(e.airing.airingAt, now), Colors.amber, Icons.schedule),
-  ScheduleStatus.missing => ('missing', Colors.orangeAccent, Icons.report_gmailerrorred),
-  ScheduleStatus.failed => ('failed${e.reason == null ? '' : ' · ${e.reason}'}', Colors.redAccent, Icons.error_outline),
+        ScheduleStatus.missing => ('waiting for release', Colors.amber.shade200, Icons.hourglass_top),
+        ScheduleStatus.failed => (
+          'failed${e.reason == null ? '' : ' · ${e.reason}'}',
+          Colors.redAccent,
+          Icons.error_outline,
+        ),
         ScheduleStatus.unmonitored => ('not monitored', Colors.grey, Icons.visibility_off_outlined),
         ScheduleStatus.notTracked => ('not in AnimeFlow', Colors.grey, Icons.public),
         ScheduleStatus.inLibrary => ('on Jellyfin', Colors.greenAccent, Icons.video_library_outlined),
+        ScheduleStatus.notOnJellyfin => ('aired · not on Jellyfin yet', Colors.grey, Icons.hourglass_empty),
+        ScheduleStatus.aired => ('aired', Colors.grey, Icons.done),
       };
 
+/// What the status line means, when its text alone does not say.
+String? statusHint(ScheduleEntry e, DateTime now) => !_waiting(e, now)
+    ? null
+    : e.reason != null
+        ? '${e.reason}${e.lastSearchedAt == null ? '' : ' · searched ${_ago(e.lastSearchedAt!, now)}'}'
+        : waitingHint;
+
 class DayColumn extends StatelessWidget {
   final DateTime day;
   final bool today, past;
@@ -125,7 +159,6 @@ class AiringCard extends StatelessWidget {
   final ScheduleEntry entry;
   final DateTime now;
   final bool compact;
-  final bool followed;
   final CardAction action;
 
   /// Why [action] is disabled (no request scope, not on Jellyfin, ...);
@@ -136,20 +169,19 @@ class AiringCard extends StatelessWidget {
   final bool busy;
   final VoidCallback onAction;
 
-  /// Null hides the bookmark (untracked series).
-  final VoidCallback? onFollow;
+  /// Right-click ([context]: the card): the page's menu; null: none.
+  final void Function(BuildContext context)? onMenu;
 
   const AiringCard({
     super.key,
     required this.entry,
     required this.now,
     required this.compact,
-    required this.followed,
     required this.action,
     required this.onAction,
     this.disabledHint,
     this.busy = false,
-    this.onFollow,
+    this.onMenu,
   });
 
   String get _id => '${entry.airing.anilistId}-${entry.airing.episode}';
@@ -157,20 +189,65 @@ class AiringCard extends StatelessWidget {
   Widget _image(String? url, Widget fallback) =>
       url == null ? fallback : Image.network(url, fit: BoxFit.cover, errorBuilder: (_, _, _) => fallback);
 
+  static Widget _hinted(String? hint, Widget child) => hint == null ? child : Tooltip(message: hint, child: child);
+
+  bool get _played => entry.watch?.played ?? false;
+
+  /// A watched episode's cover is a little dimmer.
+  Widget _dimmed(Widget cover) => _played ? Opacity(opacity: 0.6, child: cover) : cover;
+
+  /// This user's state of the episode on Jellyfin: the library cards'
+  /// green check once watched, else a thin bar to the resume point.
+  List<Widget> _watchMarks({bool small = false}) {
+    final w = entry.watch;
+    if (w == null) return const [];
+    if (w.played) {
+      final size = small ? 16.0 : 22.0;
+      return [
+        Positioned(
+          top: small ? 2 : 4,
+          right: small ? 2 : 4,
+          child: Tooltip(
+            message: 'Watched',
+            child: Container(
+              key: ValueKey('watched-$_id'),
+              constraints: BoxConstraints(minWidth: size, minHeight: size),
+              alignment: Alignment.center,
+              decoration: BoxDecoration(color: const Color(0xCC1B5E20), borderRadius: BorderRadius.circular(size / 2)),
+              child: Icon(Icons.check, size: small ? 11 : 14, color: Colors.white),
+            ),
+          ),
+        ),
+      ];
+    }
+    if (w.progress <= 0) return const [];
+    return [
+      Positioned(
+        left: 0,
+        right: 0,
+        bottom: 0,
+        child: Tooltip(
+          message: '${(w.progress * 100).round()}% watched',
+          child: LinearProgressIndicator(
+            key: ValueKey('watch-progress-$_id'),
+            value: w.progress,
+            minHeight: small ? 2 : 3,
+            backgroundColor: Colors.black54,
+          ),
+        ),
+      ),
+    ];
+  }
+
   Widget? _button(BuildContext context) {
     final enabled = disabledHint == null && !busy;
     final spinner = const SizedBox(width: 16, height: 16, child: CircularProgressIndicator(strokeWidth: 2));
     Widget? b = switch (action) {
       CardAction.none => null,
-      CardAction.putUp => FilledButton.tonalIcon(
+      CardAction.putUp || CardAction.play => FilledButton.tonalIcon(
         onPressed: enabled ? onAction : null,
         icon: busy ? spinner : const Icon(Icons.play_arrow, size: 18),
-        label: const Text('Put it up'),
-      ),
-      CardAction.playOffline => FilledButton.tonalIcon(
-        onPressed: null,
-        icon: const Icon(Icons.play_arrow, size: 18),
-        label: const Text('Play'),
+        label: Text(action == CardAction.play ? 'Play' : 'Put it up'),
       ),
       CardAction.request || CardAction.requestSeries => OutlinedButton.icon(
         onPressed: enabled ? onAction : null,
@@ -184,27 +261,12 @@ class AiringCard extends StatelessWidget {
     return disabledHint == null ? b : Tooltip(message: disabledHint!, child: b);
   }
 
-  Widget? _follow(BuildContext context, double size) {
-    final f = onFollow;
-    if (f == null) return null;
-    return IconButton(
-      key: ValueKey('follow-$_id'),
-      onPressed: f,
-      tooltip: followed ? 'Stop following' : 'Follow',
-      visualDensity: VisualDensity.compact,
-      padding: EdgeInsets.zero,
-      constraints: BoxConstraints.tightFor(width: size + 10, height: size + 10),
-      iconSize: size,
-      color: followed ? Theme.of(context).colorScheme.primary : null,
-      icon: Icon(followed ? Icons.bookmark : Icons.bookmark_outline),
-    );
-  }
-
   @override
   Widget build(BuildContext context) {
     final scheme = Theme.of(context).colorScheme;
     final a = entry.airing;
     final (label, color, icon) = statusBadge(entry, now);
+    final hint = statusHint(entry, now);
     final time = clockText(a.airingAt);
     final tintColor = a.color ?? Colors.blueGrey;
     final tint = DecoratedBox(
@@ -216,7 +278,11 @@ class AiringCard extends StatelessWidget {
         ),
       ),
     );
-    final tap = action == CardAction.putUp && disabledHint == null && !busy ? onAction : null;
+    final tap = (action == CardAction.putUp || action == CardAction.play) && disabledHint == null && !busy
+        ? onAction
+        : null;
+    final onMenu = this.onMenu;
+    final menu = onMenu == null || busy ? null : () => onMenu(context);
     if (compact) {
       final requestable = action == CardAction.request || action == CardAction.requestSeries;
       return Material(
@@ -226,13 +292,21 @@ class AiringCard extends StatelessWidget {
         child: InkWell(
           borderRadius: BorderRadius.circular(10),
           onTap: tap,
+          onSecondaryTap: menu,
           child: Padding(
             padding: const EdgeInsets.all(6),
             child: Row(
               children: [
                 ClipRRect(
                   borderRadius: BorderRadius.circular(6),
-                  child: SizedBox(width: 34, height: 48, child: _image(a.cover, tint)),
+                  child: SizedBox(
+                    width: 34,
+                    height: 48,
+                    child: Stack(
+                      fit: StackFit.expand,
+                      children: [_dimmed(_image(a.cover, tint)), ..._watchMarks(small: true)],
+                    ),
+                  ),
                 ),
                 const SizedBox(width: 8),
                 Expanded(
@@ -249,7 +323,6 @@ class AiringCard extends StatelessWidget {
                     ],
                   ),
                 ),
-                if (followed && onFollow == null) Icon(Icons.bookmark, size: 14, color: scheme.primary),
                 if (requestable)
                   Tooltip(
                     message: disabledHint ?? (action == CardAction.request ? 'Request' : 'Request series'),
@@ -263,7 +336,7 @@ class AiringCard extends StatelessWidget {
                   )
                 else
                   Tooltip(
-                    message: label,
+                    message: hint == null ? label : '$label: $hint',
                     child: Icon(icon, size: 16, color: color),
                   ),
               ],
@@ -273,7 +346,6 @@ class AiringCard extends StatelessWidget {
       );
     }
     final button = _button(context);
-    final follow = _follow(context, 16);
     // The cover poster leads: it is what people recognise at a glance.
     return Material(
       key: ValueKey('card-$_id'),
@@ -282,6 +354,7 @@ class AiringCard extends StatelessWidget {
       clipBehavior: Clip.antiAlias,
       child: InkWell(
         onTap: tap,
+        onSecondaryTap: menu,
         child: Padding(
           padding: const EdgeInsets.all(8),
           child: Column(
@@ -298,7 +371,7 @@ class AiringCard extends StatelessWidget {
                       child: Stack(
                         fit: StackFit.expand,
                         children: [
-                          _image(a.cover, tint),
+                          _dimmed(_image(a.cover, tint)),
                           Positioned(
                             left: 4,
                             top: 4,
@@ -314,6 +387,7 @@ class AiringCard extends StatelessWidget {
                               ),
                             ),
                           ),
+                          ..._watchMarks(),
                           if (entry.status == ScheduleStatus.downloading)
                             Positioned(
                               left: 0,
@@ -343,27 +417,15 @@ class AiringCard extends StatelessWidget {
                             style: const TextStyle(fontWeight: FontWeight.w600, height: 1.25),
                           ),
                           const SizedBox(height: 2),
-                          Row(
-                            children: [
-                              Flexible(
-                                child: Text(
+                          Text(
                             'Episode ${a.episode}',
                             maxLines: 1,
                             overflow: TextOverflow.ellipsis,
                             style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12),
                           ),
-                              ),
-                              const SizedBox(width: 2),
-                              if (follow != null)
-                                follow
-                              else if (followed)
-                                Padding(
-                                  padding: const EdgeInsets.only(left: 4),
-                                  child: Icon(Icons.bookmark, size: 14, color: scheme.primary),
-                                ),
-                            ],
-                          ),
                           const Spacer(),
+                          _hinted(
+                            hint,
                             Row(
                               children: [
                                 Icon(icon, size: 14, color: color),
@@ -378,6 +440,7 @@ class AiringCard extends StatelessWidget {
                                 ),
                               ],
                             ),
+                          ),
                         ],
                       ),
                     ),

apps/desktop/lib/src/schedule/ui/schedule_page.dart

@@ -6,6 +6,7 @@ import '../../jellyfin/accounts.dart';
 import '../../screens/home/picked_media.dart';
 import '../../shell/avatar.dart';
 import '../../shell/motion.dart';
+import '../../widgets/app_menu.dart';
 import '../anilist.dart';
 import '../animeflow.dart';
 import '../schedule_model.dart';
@@ -15,17 +16,23 @@ import 'schedule_card.dart';
 
 // The Schedule tab: one column per day from last week's Monday to four
 // weeks out (AniList), each airing with what AnimeFlow has of it, and the
-// one thing to do about it (put it up, request it). Refreshes every
-// minute while visible; ETags keep that cheap.
+// one thing to do about it (put it up, request it; right-click an
+// available one to queue it). Refreshes every minute while visible; ETags
+// keep that cheap. Episodes on Jellyfin show this user's watched state,
+// reloaded after a playback stops (JellyfinAccounts.watched).
 
-enum ScheduleFilter { jellyfin, following, all }
+enum ScheduleFilter { jellyfin, all }
 
 class SchedulePage extends StatefulWidget {
-  /// In a server: available episodes can be put up.
-  final bool online;
+  /// Nobody else watches (offline or solo): available episodes say Play
+  /// (offline that starts a solo session).
+  final bool solo;
 
   /// Puts a Jellyfin episode up in the server; returns an error to show.
   final Future<String?> Function(JellyfinMedia pick) onPutUp;
+
+  /// Adds an episode to Up next; null: no server, the cards have no menu.
+  final AddToQueue? onAddToQueue;
   final void Function(String message) onToast;
 
   /// Null = the page makes (and closes) its own.
@@ -36,8 +43,9 @@ class SchedulePage extends StatefulWidget {
 
   const SchedulePage({
     super.key,
-    required this.online,
+    this.solo = false,
     required this.onPutUp,
+    this.onAddToQueue,
     required this.onToast,
     this.repository,
     this.accounts,
@@ -63,6 +71,7 @@ class _SchedulePageState extends State<SchedulePage> {
   bool _refreshing = false;
   int _gen = 0;
   Timer? _timer;
+  StreamSubscription<String>? _watchedSub;
   final _scroll = ScrollController();
   bool _jumped = false;
 
@@ -74,9 +83,6 @@ class _SchedulePageState extends State<SchedulePage> {
   /// The sheet stays built while it slides out.
   bool _sheetBuilt = false;
 
-  /// Follow toggles not yet confirmed by a reload (series id -> followed).
-  final _followOverride = <int, bool>{};
-
   /// Requested in this run: "anilistId#episode" or "series:anilistId".
   final _requested = <String>{};
 
@@ -96,21 +102,31 @@ class _SchedulePageState extends State<SchedulePage> {
   void initState() {
     super.initState();
     _ownsRepo = widget.repository == null;
-    _repo =
-        widget.repository ??
-        ScheduleRepository(
-          aniList: AniListClient(),
-          animeFlow: AnimeFlowClient.fromAccounts(JellyfinAccounts.instance),
-        );
+    _repo = widget.repository ?? _ownRepo();
     _load();
     _timer = Timer.periodic(SchedulePage.refreshEvery, (_) {
       if (mounted && !_refreshing && TickerMode.valuesOf(context).enabled) _load();
     });
+    // Back from watching: the cards' watched marks follow (the stop report
+    // already dropped the cached episode lists).
+    _watchedSub = _accounts.watched.listen((_) {
+      if (mounted) _load();
+    });
+  }
+
+  ScheduleRepository _ownRepo() {
+    final flow = AnimeFlowClient.fromAccounts(_accounts);
+    return ScheduleRepository(
+      aniList: AniListClient(),
+      animeFlow: flow,
+      jellyfinEpisodes: (id) => jellyfinScheduleEpisodes(_accounts, flow, id),
+    );
   }
 
   @override
   void dispose() {
     _timer?.cancel();
+    _watchedSub?.cancel();
     _scroll.dispose();
     if (_ownsRepo) {
       _repo.aniList.close();
@@ -185,11 +201,8 @@ class _SchedulePageState extends State<SchedulePage> {
     animate ? _scroll.animateTo(x, duration: easeTime, curve: ease) : _scroll.jumpTo(x);
   }
 
-  bool _followed(ScheduleEntry e) => (e.seriesId == null ? null : _followOverride[e.seriesId]) ?? e.followed;
-
   bool _shows(ScheduleEntry e) => switch (_filter) {
     ScheduleFilter.jellyfin => e.tracked || e.onJellyfin,
-    ScheduleFilter.following => _followed(e),
     ScheduleFilter.all => _niche || e.tracked || e.airing.popularity >= SchedulePage.nicheBelow,
   };
 
@@ -215,16 +228,17 @@ class _SchedulePageState extends State<SchedulePage> {
 
   (CardAction, String?) _actionFor(ScheduleEntry e) {
     if (e.status == ScheduleStatus.available || e.status == ScheduleStatus.inLibrary) {
-      if (!widget.online) return (CardAction.playOffline, 'Join or host a server to put it up');
-      if (e.jellyfinSeriesId == null) return (CardAction.putUp, 'Not linked to a Jellyfin series yet');
-      return (CardAction.putUp, null);
+      final put = widget.solo ? CardAction.play : CardAction.putUp;
+      if (e.jellyfinSeriesId == null) return (put, 'Not linked to a Jellyfin series yet');
+      return (put, null);
     }
     final me = _me;
     final CardAction kind;
     if (e.tracked) {
-      kind = e.status == ScheduleStatus.missing || e.status == ScheduleStatus.failed
-          ? CardAction.request
-          : CardAction.none;
+      // Only an unmonitored episode is worth asking for: AnimeFlow grabs
+      // a missing one (no release yet) by itself once a release appears,
+      // and retries a failed one.
+      kind = e.status == ScheduleStatus.unmonitored ? CardAction.request : CardAction.none;
     } else {
       // On Jellyfin already (owner added it by hand): nothing to request.
       kind = me != null && !e.onJellyfin ? CardAction.requestSeries : CardAction.none;
@@ -242,6 +256,7 @@ class _SchedulePageState extends State<SchedulePage> {
   Future<void> _onAction(ScheduleEntry e, CardAction action) async {
     switch (action) {
       case CardAction.putUp:
+      case CardAction.play:
         return _putUp(e);
       case CardAction.request:
       case CardAction.requestSeries:
@@ -266,6 +281,32 @@ class _SchedulePageState extends State<SchedulePage> {
     }
   }
 
+  /// Right-click on an available episode ([context]: its card): Put it
+  /// up, Add to queue, Play next.
+  Future<void> _menu(BuildContext context, ScheduleEntry e) async {
+    final add = widget.onAddToQueue;
+    if (add == null) return;
+    final pick = await showAppMenu<int>(context, items: [
+      AppMenuItem(value: 0, label: widget.solo ? 'Play' : 'Put it up'),
+      const AppMenuItem(value: 1, label: 'Add to queue'),
+      const AppMenuItem(value: 2, label: 'Play next'),
+    ]);
+    if (pick == null || !mounted) return;
+    if (pick == 0) return _putUp(e);
+    final key = 'play:${_key(e)}';
+    if (_busy.contains(key)) return;
+    setState(() => _busy.add(key));
+    try {
+      final media = await resolveJellyfinEpisode(_accounts, _flow, e);
+      final err = await add(media, next: pick == 2);
+      if (err != null) _toast(err);
+    } catch (err) {
+      _toast(friendlyError(err));
+    } finally {
+      if (mounted) setState(() => _busy.remove(key));
+    }
+  }
+
   Future<void> _request(ScheduleEntry e) async {
     final c = _flow;
     if (c == null) return;
@@ -335,21 +376,6 @@ class _SchedulePageState extends State<SchedulePage> {
     },
   );
 
-  Future<void> _toggleFollow(ScheduleEntry e) async {
-    final c = _flow, id = e.seriesId;
-    if (c == null || id == null) return;
-    final next = !_followed(e);
-    setState(() => _followOverride[id] = next);
-    try {
-      await c.setFollowed(id, next);
-      await _load();
-    } catch (err) {
-      _toast(friendlyError(err));
-    } finally {
-      if (mounted) setState(() => _followOverride.remove(id));
-    }
-  }
-
   Future<void> _decide(AnimeFlowRequest r, {required bool approve}) async {
     final c = _flow;
     if (c == null || _reqBusy.contains(r.id)) return;
@@ -387,11 +413,6 @@ class _SchedulePageState extends State<SchedulePage> {
                 icon: Icon(Icons.video_library_outlined),
                 label: Text('On Jellyfin'),
               ),
-              ButtonSegment(
-                value: ScheduleFilter.following,
-                icon: Icon(Icons.bookmark_outline),
-                label: Text('Following'),
-              ),
               ButtonSegment(value: ScheduleFilter.all, icon: Icon(Icons.public), label: Text('All airing')),
             ],
             selected: {_filter},
@@ -501,7 +522,6 @@ class _SchedulePageState extends State<SchedulePage> {
       (byDay[DateTime(l.year, l.month, l.day)] ??= []).add(e);
     }
     return HScroll(
-      wheel: false,
       controller: _scroll,
       builder: (c) => ListView.separated(
         key: const ValueKey('schedule-board'),
@@ -531,17 +551,18 @@ class _SchedulePageState extends State<SchedulePage> {
 
   Widget _card(ScheduleEntry e, DateTime now) {
     final (action, hint) = _actionFor(e);
-    final busy = _busy.contains(action == CardAction.putUp ? 'play:${_key(e)}' : _key(e));
+    final busy = _busy.contains(action == CardAction.putUp || action == CardAction.play ? 'play:${_key(e)}' : _key(e));
     return AiringCard(
       entry: e,
       now: now,
       compact: _compact,
-      followed: _followed(e),
       action: action,
       disabledHint: hint,
       busy: busy,
       onAction: () => _onAction(e, action),
-      onFollow: e.tracked && e.seriesId != null && _flow != null ? () => _toggleFollow(e) : null,
+      onMenu: widget.onAddToQueue != null && (action == CardAction.putUp || action == CardAction.play) && hint == null
+          ? (context) => _menu(context, e)
+          : null,
     );
   }
 

apps/desktop/lib/src/screens/demo/demo_files.dart

@@ -1,920 +0,0 @@
-part of 'shell_demo.dart';
-
-// DEBUG ONLY: the Files source for real. Folders you add are scanned for
-// videos (everything else is counted and hidden), grouped into series by
-// a small anitomy-style name parser; a click plays the file in the demo
-// player. Kept in memory for the demo session.
-
-const _videoExt = {
-  'mkv',
-  'mp4',
-  'webm',
-  'avi',
-  'mov',
-  'm4v',
-  'ts',
-  'm2ts',
-  'wmv',
-  'flv',
-};
-const _subExt = {'ass', 'ssa', 'srt', 'vtt', 'sup'};
-
-class _VideoFile {
-  final String path;
-  final int size;
-  final _ParsedName parsed;
-  const _VideoFile(this.path, this.size, this.parsed);
-  String get name => _baseName(path);
-  String get folder => _baseName(File(path).parent.path);
-}
-
-class _FolderScan {
-  final List<_VideoFile> videos;
-  final int hidden;
-  final int subtitles;
-  final List<String> hiddenExamples;
-  final bool truncated;
-  const _FolderScan(
-    this.videos,
-    this.hidden,
-    this.subtitles,
-    this.hiddenExamples,
-    this.truncated,
-  );
-}
-
-final _folders = ValueNotifier<List<String>>([]);
-final _scans = <String, _FolderScan>{};
-final _recentFiles = ValueNotifier<List<_VideoFile>>([]);
-
-/// What a release file name says: series, season, episode, group.
-class _ParsedName {
-  final String series;
-  final int? season;
-  final int? episode;
-  final String? group;
-  const _ParsedName(this.series, {this.season, this.episode, this.group});
-
-  String get label {
-    if (episode == null) return series;
-    final ep = 'E${episode.toString().padLeft(2, '0')}';
-    return season == null ? ep : 'S${season.toString().padLeft(2, '0')}$ep';
-  }
-}
-
-_ParsedName _parseName(String file) {
-  var s = file;
-  final dot = s.lastIndexOf('.');
-  if (dot > 0) s = s.substring(0, dot);
-  final group = RegExp(r'^\s*\[([^\]]+)\]').firstMatch(s)?.group(1);
-  // Brackets/parens hold group, resolution, codec, CRC.
-  s = s.replaceAll(RegExp(r'\[[^\]]*\]|\([^)]*\)'), ' ');
-  // Dots/underscores as separators (scene style), unless it has spaces.
-  if (!s.contains(' ') || RegExp(r'\w\.\w').allMatches(s).length > 2) {
-    s = s.replaceAll(RegExp(r'[._]'), ' ');
-  }
-  int? season, episode;
-  var cut = s.length;
-  final se = RegExp(
-    r'\bS(\d{1,2})\s?E(\d{1,4})\b',
-    caseSensitive: false,
-  ).firstMatch(s);
-  if (se != null) {
-    season = int.parse(se.group(1)!);
-    episode = int.parse(se.group(2)!);
-    cut = se.start;
-  } else {
-    final dash = RegExp(r'\s-\s(\d{1,4})(?:v\d)?\b').firstMatch(s);
-    final ep = RegExp(
-      r'\b(?:E|EP|Episode)\s?(\d{1,4})\b',
-      caseSensitive: false,
-    ).firstMatch(s);
-    final m = dash ?? ep;
-    if (m != null) {
-      episode = int.parse(m.group(1)!);
-      cut = m.start;
-    }
-  }
-  var series = s.substring(0, cut);
-  // Season markers inside the title ("Title S2", "Title 2nd Season").
-  final sInTitle = RegExp(
-    r'\s(?:S(\d{1,2})|(\d)(?:st|nd|rd|th) Season)\s*$',
-    caseSensitive: false,
-  ).firstMatch(series);
-  if (sInTitle != null && season == null) {
-    season = int.parse(sInTitle.group(1) ?? sInTitle.group(2)!);
-  }
-  // Release junk after the title.
-  series = series
-      .replaceAll(
-        RegExp(
-          r'\b(1080p|720p|2160p|480p|x26[45]|HEVC|WEB(-?DL|Rip)?|BD(Rip)?|BluRay|AAC|FLAC|10bit)\b.*',
-          caseSensitive: false,
-        ),
-        '',
-      )
-      .replaceAll(RegExp(r'\s+'), ' ')
-      .replaceAll(RegExp(r'[\s\-–:]+$'), '')
-      .trim();
-  if (series.isEmpty) series = file;
-  return _ParsedName(series, season: season, episode: episode, group: group);
-}
-
-Future<_FolderScan> _scanFolder(String dir) async {
-  final videos = <_VideoFile>[];
-  var hidden = 0, subs = 0;
-  final examples = <String>[];
-  var seen = 0;
-  var truncated = false;
-  try {
-    await for (final e in Directory(
-      dir,
-    ).list(recursive: true, followLinks: false)) {
-      if (e is! File) continue;
-      if (++seen > 20000) {
-        truncated = true;
-        break;
-      }
-      final name = e.path.split(Platform.pathSeparator).last;
-      if (name.startsWith('.')) continue;
-      final ext = name.contains('.') ? name.split('.').last.toLowerCase() : '';
-      if (_subExt.contains(ext)) {
-        subs++;
-        continue;
-      }
-      final isVideo = _videoExt.contains(ext);
-      final lower = name.toLowerCase();
-      int size = 0;
-      try {
-        size = await e.length();
-      } catch (_) {}
-      // Samples and trailers next to the real thing.
-      final junk =
-          isVideo &&
-          (lower.contains('sample') || lower.contains('trailer')) &&
-          size < 300 << 20;
-      if (!isVideo || junk) {
-        hidden++;
-        if (examples.length < 6) examples.add(name);
-        continue;
-      }
-      videos.add(_VideoFile(e.path, size, _parseName(name)));
-    }
-  } catch (_) {
-    // Unreadable subfolders: show what was found.
-  }
-  return _FolderScan(videos, hidden, subs, examples, truncated);
-}
-
-String _size(int b) => b >= 1 << 30
-    ? '${(b / (1 << 30)).toStringAsFixed(1)} GB'
-    : '${(b / (1 << 20)).toStringAsFixed(0)} MB';
-
-class _RealFilesTab extends StatefulWidget {
-  final bool online;
-  final VoidCallback onPlay;
-  const _RealFilesTab({required this.online, required this.onPlay});
-
-  @override
-  State<_RealFilesTab> createState() => _RealFilesTabState();
-}
-
-class _RealFilesTabState extends State<_RealFilesTab> {
-  String? _open; // null = Recent
-  bool _scanning = false;
-  bool _showOther = false;
-
-  Future<void> _addFolder() async {
-    String? dir;
-    try {
-      dir = await FilePicker.getDirectoryPath(
-        dialogTitle: 'Add a folder with videos',
-      );
-    } catch (_) {}
-    if (dir == null || _folders.value.contains(dir)) return;
-    _folders.value = [..._folders.value, dir];
-    await _select(dir, rescan: true);
-  }
-
-  Future<void> _select(String? dir, {bool rescan = false}) async {
-    setState(() {
-      _open = dir;
-      _showOther = false;
-    });
-    if (dir == null || (_scans.containsKey(dir) && !rescan)) return;
-    setState(() => _scanning = true);
-    final scan = await _scanFolder(dir);
-    if (!mounted) return;
-    setState(() {
-      _scans[dir] = scan;
-      _scanning = false;
-    });
-  }
-
-  Future<void> _browse() async {
-    List<PlatformFile> files = const [];
-    try {
-      files = await FilePicker.pickFiles(
-        dialogTitle: 'Pick a video',
-        type: FileType.custom,
-        allowedExtensions: _videoExt.toList(),
-      );
-    } catch (_) {}
-    final path = files.isEmpty ? null : files.first.path;
-    if (path == null) return;
-    final f = File(path);
-    await _play(
-      _VideoFile(path, await f.length(), _parseName(f.uri.pathSegments.last)),
-    );
-  }
-
-  Future<void> _play(_VideoFile v) async {
-    _recentFiles.value = [
-      v,
-      ..._recentFiles.value.where((x) => x.path != v.path),
-    ].take(30).toList();
-    // Structured names read as "Series · S01E03"; anything else as the
-    // cleaned name and the folder it is in.
-    await _playMedia(
-      _DemoMedia(
-        v.parsed.series,
-        v.parsed.episode == null ? v.folder : v.parsed.label,
-        v.path,
-      ),
-    );
-    widget.onPlay();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    return LayoutBuilder(
-      builder: (context, box) {
-        final narrow = box.maxWidth < 700;
-        final list = _list(context, narrow);
-        if (narrow) return list;
-        return Row(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            SizedBox(width: 260, child: _sidebar(context)),
-            Expanded(child: list),
-          ],
-        );
-      },
-    );
-  }
-
-  Widget _sidebar(BuildContext context) {
-    final scheme = Theme.of(context).colorScheme;
-    return ValueListenableBuilder(
-      valueListenable: _folders,
-      builder: (context, folders, _) => ListView(
-        padding: const EdgeInsets.fromLTRB(20, 20, 8, 20),
-        children: [
-          const Text('Folders', style: TextStyle(fontWeight: FontWeight.w600)),
-          const SizedBox(height: 8),
-          ListTile(
-            dense: true,
-            selected: _open == null,
-            shape: RoundedRectangleBorder(
-              borderRadius: BorderRadius.circular(10),
-            ),
-            leading: const Icon(Icons.history, size: 18),
-            title: const Text('Recent'),
-            onTap: () => _select(null),
-          ),
-          for (final f in folders)
-            ListTile(
-              dense: true,
-              selected: _open == f,
-              shape: RoundedRectangleBorder(
-                borderRadius: BorderRadius.circular(10),
-              ),
-              leading: const Icon(Icons.folder_outlined, size: 18),
-              title: Text(
-                _baseName(f),
-                maxLines: 1,
-                overflow: TextOverflow.ellipsis,
-              ),
-              subtitle: Text(
-                _scans[f] == null
-                    ? 'scanning…'
-                    : '${_scans[f]!.videos.length} videos',
-                style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 11),
-              ),
-              trailing: IconButton(
-                tooltip: 'Remove folder',
-                icon: const Icon(Icons.close, size: 16),
-                onPressed: () {
-                  _folders.value = [...folders]..remove(f);
-                  _scans.remove(f);
-                  if (_open == f) _select(null);
-                },
-              ),
-              onTap: () => _select(f),
-            ),
-          TextButton.icon(
-            onPressed: _addFolder,
-            icon: const Icon(Icons.add, size: 18),
-            label: const Text('Add folder'),
-          ),
-          const Divider(),
-          OutlinedButton.icon(
-            onPressed: _browse,
-            icon: const Icon(Icons.folder_open, size: 18),
-            label: const Text('Browse…'),
-          ),
-          const SizedBox(height: 6),
-          const Text(
-            'The system file picker, for anything outside your folders.',
-            style: TextStyle(color: Colors.grey, fontSize: 11),
-          ),
-        ],
-      ),
-    );
-  }
-
-  Widget _list(BuildContext context, bool narrow) {
-    final scheme = Theme.of(context).colorScheme;
-    final open = _open;
-    final scan = open == null ? null : _scans[open];
-    final children = <Widget>[
-      // Where you are: Recent, or the folder and its path.
-      Padding(
-        padding: const EdgeInsets.only(bottom: 14),
-        child: Row(
-          children: [
-            Icon(
-              open == null ? Icons.history : Icons.folder,
-              color: scheme.primary,
-            ),
-            const SizedBox(width: 10),
-            Expanded(
-              child: Column(
-                crossAxisAlignment: CrossAxisAlignment.start,
-                children: [
-                  Text(
-                    open == null ? 'Recent' : _baseName(open),
-                    style: Theme.of(context).textTheme.headlineSmall,
-                  ),
-                  if (open != null)
-                    Text(
-                      open,
-                      maxLines: 1,
-                      overflow: TextOverflow.ellipsis,
-                      style: TextStyle(
-                        color: scheme.onSurfaceVariant,
-                        fontSize: 12,
-                      ),
-                    ),
-                ],
-              ),
-            ),
-          ],
-        ),
-      ),
-      if (narrow)
-        Padding(
-          padding: const EdgeInsets.only(bottom: 14),
-          child: ValueListenableBuilder(
-            valueListenable: _folders,
-            builder: (context, folders, _) => Wrap(
-              spacing: 8,
-              runSpacing: 8,
-              children: [
-                ChoiceChip(
-                  label: const Text('Recent'),
-                  selected: open == null,
-                  onSelected: (_) => _select(null),
-                ),
-                for (final f in folders)
-                  ChoiceChip(
-                    label: Text(_baseName(f)),
-                    selected: open == f,
-                    onSelected: (_) => _select(f),
-                  ),
-                ActionChip(
-                  avatar: const Icon(Icons.add, size: 16),
-                  label: const Text('Folder'),
-                  onPressed: _addFolder,
-                ),
-                ActionChip(
-                  avatar: const Icon(Icons.folder_open, size: 16),
-                  label: const Text('Browse…'),
-                  onPressed: _browse,
-                ),
-              ],
-            ),
-          ),
-        ),
-      if (widget.online)
-        Container(
-          padding: const EdgeInsets.all(10),
-          margin: const EdgeInsets.only(bottom: 16),
-          decoration: BoxDecoration(
-            color: Colors.lightBlueAccent.withValues(alpha: 0.08),
-            borderRadius: BorderRadius.circular(10),
-          ),
-          child: const Row(
-            children: [
-              Icon(Icons.cell_tower, size: 18, color: Colors.lightBlueAccent),
-              SizedBox(width: 10),
-              Expanded(
-                child: Text(
-                  'Files stream from this computer through the server. Keep the app open while it plays.',
-                ),
-              ),
-            ],
-          ),
-        ),
-    ];
-    if (open == null) {
-      children.add(
-        ValueListenableBuilder(
-          valueListenable: _recentFiles,
-          builder: (context, recent, _) => recent.isEmpty
-              ? _empty(
-                  context,
-                  Icons.video_library_outlined,
-                  'Nothing played yet',
-                  'Add a folder with your videos, or Browse for a single file.',
-                  action: FilledButton.icon(
-                    onPressed: _addFolder,
-                    icon: const Icon(Icons.create_new_folder_outlined),
-                    label: const Text('Add folder'),
-                  ),
-                )
-              : Column(
-                  children: [
-                    for (final v in recent)
-                      _episodeTile(context, v, showSeries: true),
-                  ],
-                ),
-        ),
-      );
-    } else if (_scanning || scan == null) {
-      children.add(
-        const Padding(
-          padding: EdgeInsets.only(top: 60),
-          child: Center(child: CircularProgressIndicator()),
-        ),
-      );
-    } else {
-      final groups = <String, List<_VideoFile>>{};
-      for (final v in scan.videos) {
-        groups.putIfAbsent(v.parsed.series, () => []).add(v);
-      }
-      final names = groups.keys.toList()
-        ..sort((a, b) => a.toLowerCase().compareTo(b.toLowerCase()));
-      for (final g in groups.values) {
-        g.sort((a, b) {
-          final s = (a.parsed.season ?? 0).compareTo(b.parsed.season ?? 0);
-          if (s != 0) return s;
-          final e = (a.parsed.episode ?? 0).compareTo(b.parsed.episode ?? 0);
-          return e != 0 ? e : a.name.compareTo(b.name);
-        });
-      }
-      children.add(
-        Wrap(
-          crossAxisAlignment: WrapCrossAlignment.center,
-          children: [
-            Icon(
-              Icons.filter_alt_outlined,
-              size: 16,
-              color: scheme.onSurfaceVariant,
-            ),
-            const SizedBox(width: 6),
-            Text(
-              '${scan.videos.length} videos in ${groups.length} series'
-              '${scan.hidden > 0 ? ' · ${scan.hidden} other files hidden' : ''}'
-              '${scan.subtitles > 0 ? ' · ${scan.subtitles} subtitle files' : ''}'
-              '${scan.truncated ? ' · stopped after 20 000 files' : ''}',
-              style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12),
-            ),
-            if (scan.hidden > 0) ...[
-              const SizedBox(width: 8),
-              TextButton(
-                onPressed: () => setState(() => _showOther = !_showOther),
-                child: Text(_showOther ? 'Hide them' : 'Show some'),
-              ),
-            ],
-            TextButton.icon(
-              onPressed: () => _select(open, rescan: true),
-              icon: const Icon(Icons.refresh, size: 16),
-              label: const Text('Rescan'),
-            ),
-          ],
-        ),
-      );
-      children.add(
-        AnimatedSize(
-          duration: _easeTime,
-          curve: _ease,
-          alignment: Alignment.topLeft,
-          child: !_showOther
-              ? const SizedBox(width: double.infinity)
-              : Column(
-                  children: [
-                    for (final f in scan.hiddenExamples)
-                      ListTile(
-                        dense: true,
-                        enabled: false,
-                        leading: const Icon(
-                          Icons.insert_drive_file_outlined,
-                          size: 18,
-                        ),
-                        title: Text(f),
-                        trailing: const Text(
-                          'not a video',
-                          style: TextStyle(fontSize: 12),
-                        ),
-                      ),
-                  ],
-                ),
-        ),
-      );
-      if (scan.videos.isEmpty) {
-        children.add(
-          _empty(
-            context,
-            Icons.search_off,
-            'No videos here',
-            'Only video files are listed (mkv, mp4, webm…).',
-          ),
-        );
-      }
-      // Series: files whose names carry an episode number. Everything
-      // else is a loose video, shown as a thumbnail grid.
-      final loose = <_VideoFile>[];
-      for (final name in names) {
-        final eps = groups[name]!;
-        if (eps.every((e) => e.parsed.episode == null)) {
-          loose.addAll(eps);
-          continue;
-        }
-        children.add(
-          Padding(
-            padding: const EdgeInsets.only(top: 18, bottom: 4),
-            child: Row(
-              children: [
-                ClipRRect(
-                  borderRadius: BorderRadius.circular(8),
-                  child: _Thumb(eps.first.path, width: 96, height: 54),
-                ),
-                const SizedBox(width: 12),
-                Expanded(
-                  child: Column(
-                    crossAxisAlignment: CrossAxisAlignment.start,
-                    children: [
-                      Text(
-                        name,
-                        style: Theme.of(context).textTheme.titleMedium,
-                      ),
-                      Text(
-                        '${eps.length} ${eps.length == 1 ? 'episode' : 'episodes'}'
-                        '${eps.first.parsed.group == null ? '' : ' · ${eps.first.parsed.group}'}',
-                        style: const TextStyle(
-                          color: Colors.grey,
-                          fontSize: 12,
-                        ),
-                      ),
-                    ],
-                  ),
-                ),
-              ],
-            ),
-          ),
-        );
-        for (final v in eps) {
-          children.add(_episodeTile(context, v));
-        }
-      }
-      if (loose.isNotEmpty) {
-        children.add(
-          Padding(
-            padding: const EdgeInsets.only(top: 22, bottom: 10),
-            child: Text(
-              names.length == loose.length ? 'Videos' : 'Other videos',
-              style: Theme.of(context).textTheme.titleMedium,
-            ),
-          ),
-        );
-        children.add(
-          LayoutBuilder(
-            builder: (context, box) {
-              const gap = 12.0;
-              final cols = (box.maxWidth / 240).floor().clamp(2, 8);
-              final w = (box.maxWidth - gap * (cols - 1)) / cols;
-              return Wrap(
-                spacing: gap,
-                runSpacing: gap,
-                children: [
-                  for (final v in loose)
-                    SizedBox(width: w, child: _videoCard(context, v)),
-                ],
-              );
-            },
-          ),
-        );
-      }
-    }
-    return ListView(
-      padding: EdgeInsets.fromLTRB(narrow ? 20 : 12, 20, 20, 20),
-      children: children,
-    );
-  }
-
-  Widget _episodeTile(
-    BuildContext context,
-    _VideoFile v, {
-    bool showSeries = false,
-  }) {
-    final scheme = Theme.of(context).colorScheme;
-    return ValueListenableBuilder(
-      valueListenable: _nowPlaying,
-      builder: (context, now, _) {
-        final playing = now?.path == v.path;
-        return ListTile(
-          dense: true,
-          contentPadding: EdgeInsets.only(left: showSeries ? 0 : 20),
-          shape: RoundedRectangleBorder(
-            borderRadius: BorderRadius.circular(10),
-          ),
-          selected: playing,
-          leading: SizedBox(
-            width: 112,
-            child: Row(
-              children: [
-                ClipRRect(
-                  borderRadius: BorderRadius.circular(6),
-                  child: _Thumb(v.path, width: 80, height: 45),
-                ),
-                const SizedBox(width: 8),
-                Icon(
-                  playing ? Icons.graphic_eq : Icons.play_circle_outline,
-                  size: 20,
-                  color: scheme.primary,
-                ),
-              ],
-            ),
-          ),
-          minLeadingWidth: 112,
-          title: Text(
-            showSeries
-                ? '${v.parsed.series} · ${v.parsed.label}'
-                : v.parsed.label,
-          ),
-          subtitle: Text(
-            showSeries && v.parsed.episode == null ? v.folder : v.name,
-            maxLines: 1,
-            overflow: TextOverflow.ellipsis,
-          ),
-          trailing: Text(
-            _size(v.size),
-            style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12),
-          ),
-          onTap: () => _play(v),
-        );
-      },
-    );
-  }
-
-  Widget _videoCard(BuildContext context, _VideoFile v) {
-    final scheme = Theme.of(context).colorScheme;
-    return ValueListenableBuilder(
-      valueListenable: _nowPlaying,
-      builder: (context, now, _) {
-        final playing = now?.path == v.path;
-        return InkWell(
-          onTap: () => _play(v),
-          borderRadius: BorderRadius.circular(12),
-          child: Column(
-            crossAxisAlignment: CrossAxisAlignment.start,
-            children: [
-              AspectRatio(
-                aspectRatio: 16 / 9,
-                child: Container(
-                  decoration: BoxDecoration(
-                    borderRadius: BorderRadius.circular(12),
-                    border: Border.all(
-                      color: playing ? scheme.primary : Colors.transparent,
-                      width: 2,
-                    ),
-                  ),
-                  child: ClipRRect(
-                    borderRadius: BorderRadius.circular(10),
-                    child: Stack(
-                      fit: StackFit.expand,
-                      children: [
-                        _Thumb(v.path),
-                        Positioned(
-                          right: 6,
-                          bottom: 6,
-                          child: _DurationBadge(v.path),
-                        ),
-                        if (playing)
-                          const Center(
-                            child: Icon(
-                              Icons.graphic_eq,
-                              color: Colors.white,
-                              size: 32,
-                            ),
-                          ),
-                      ],
-                    ),
-                  ),
-                ),
-              ),
-              const SizedBox(height: 6),
-              Text(
-                v.parsed.series,
-                maxLines: 2,
-                overflow: TextOverflow.ellipsis,
-                style: TextStyle(
-                  fontWeight: FontWeight.w600,
-                  color: playing ? scheme.primary : null,
-                ),
-              ),
-              Text(
-                _size(v.size),
-                style: const TextStyle(color: Colors.grey, fontSize: 12),
-              ),
-            ],
-          ),
-        );
-      },
-    );
-  }
-
-  Widget _empty(
-    BuildContext context,
-    IconData icon,
-    String title,
-    String sub, {
-    Widget? action,
-  }) => Padding(
-    padding: const EdgeInsets.only(top: 60),
-    child: Column(
-      children: [
-        Icon(
-          icon,
-          size: 44,
-          color: Theme.of(context).colorScheme.onSurfaceVariant,
-        ),
-        const SizedBox(height: 10),
-        Text(title, style: Theme.of(context).textTheme.titleMedium),
-        const SizedBox(height: 4),
-        Text(sub, style: const TextStyle(color: Colors.grey)),
-        if (action != null) ...[const SizedBox(height: 14), action],
-      ],
-    ),
-  );
-}
-
-String _baseName(String path) {
-  final parts = path
-      .split(RegExp(r'[/\\]'))
-      .where((p) => p.isNotEmpty)
-      .toList();
-  return parts.isEmpty ? path : parts.last;
-}
-
-// ------------------------------------------------------------ thumbnails
-//
-// Demo: ffmpeg/ffprobe when installed (a frame at 25%, cached in the temp
-// dir). The real app would ask mpv for the frame instead (no extra tool).
-
-class _ThumbInfo {
-  final File? image;
-  final Duration? duration;
-  const _ThumbInfo(this.image, this.duration);
-}
-
-final _thumbs = <String, Future<_ThumbInfo>>{};
-var _thumbRunning = 0;
-final _thumbQueue = <Completer<void>>[];
-
-Future<_ThumbInfo> _thumbFor(String path) =>
-    _thumbs.putIfAbsent(path, () async {
-      // At most 3 ffmpeg runs at a time.
-      if (_thumbRunning >= 3) {
-        final c = Completer<void>();
-        _thumbQueue.add(c);
-        await c.future;
-      }
-      _thumbRunning++;
-      try {
-        return await _makeThumb(path);
-      } finally {
-        _thumbRunning--;
-        if (_thumbQueue.isNotEmpty) _thumbQueue.removeAt(0).complete();
-      }
-    });
-
-Future<_ThumbInfo> _makeThumb(String path) async {
-  Duration? dur;
-  try {
-    final r = await Process.run('ffprobe', [
-      '-v',
-      'error',
-      '-show_entries',
-      'format=duration',
-      '-of',
-      'csv=p=0',
-      path,
-    ]);
-    final secs = double.tryParse('${r.stdout}'.trim());
-    if (secs != null) dur = Duration(milliseconds: (secs * 1000).round());
-  } catch (_) {
-    return const _ThumbInfo(null, null); // no ffmpeg on this machine
-  }
-  final dir = Directory('${Directory.systemTemp.path}/wt-demo-thumbs')
-    ..createSync(recursive: true);
-  final key = path.hashCode.toUnsigned(32).toRadixString(16);
-  final out = File('${dir.path}/$key.jpg');
-  if (out.existsSync() && out.lengthSync() > 0) return _ThumbInfo(out, dur);
-  final at = dur == null ? 5.0 : dur.inMilliseconds / 1000 * 0.25;
-  try {
-    final r = await Process.run('ffmpeg', [
-      '-v',
-      'error',
-      '-y',
-      '-ss',
-      at.toStringAsFixed(2),
-      '-i',
-      path,
-      '-frames:v',
-      '1',
-      '-vf',
-      'scale=480:-2',
-      '-q:v',
-      '4',
-      out.path,
-    ]);
-    if (r.exitCode == 0 && out.existsSync()) return _ThumbInfo(out, dur);
-  } catch (_) {}
-  return _ThumbInfo(null, dur);
-}
-
-class _Thumb extends StatelessWidget {
-  final String path;
-  final double? width, height;
-  const _Thumb(this.path, {this.width, this.height});
-
-  @override
-  Widget build(BuildContext context) {
-    final scheme = Theme.of(context).colorScheme;
-    final placeholder = Container(
-      width: width,
-      height: height,
-      color: scheme.surfaceContainerHighest,
-      child: Icon(
-        Icons.movie_outlined,
-        color: scheme.onSurfaceVariant,
-        size: 20,
-      ),
-    );
-    return FutureBuilder<_ThumbInfo>(
-      future: _thumbFor(path),
-      builder: (context, snap) {
-        final img = snap.data?.image;
-        return AnimatedSwitcher(
-          duration: _easeTime,
-          child: img == null
-              ? placeholder
-              : Image.file(
-                  img,
-                  key: ValueKey(img.path),
-                  width: width,
-                  height: height,
-                  fit: BoxFit.cover,
-                ),
-        );
-      },
-    );
-  }
-}
-
-class _DurationBadge extends StatelessWidget {
-  final String path;
-  const _DurationBadge(this.path);
-
-  @override
-  Widget build(BuildContext context) => FutureBuilder<_ThumbInfo>(
-    future: _thumbFor(path),
-    builder: (context, snap) {
-      final d = snap.data?.duration;
-      if (d == null) return const SizedBox.shrink();
-      return Container(
-        padding: const EdgeInsets.symmetric(horizontal: 5, vertical: 1),
-        decoration: BoxDecoration(
-          color: Colors.black87,
-          borderRadius: BorderRadius.circular(4),
-        ),
-        child: Text(
-          _fmt(d),
-          style: const TextStyle(color: Colors.white, fontSize: 11),
-        ),
-      );
-    },
-  );
-}

apps/desktop/lib/src/screens/demo/demo_player.dart

@@ -1,577 +0,0 @@
-part of 'shell_demo.dart';
-
-// DEBUG ONLY: a real media_kit player for the layout demo. One Player and
-// VideoController, shown by whichever view is active (mini, full or
-// fullscreen); only one Video widget is mounted at a time.
-
-class _DemoMedia {
-  final String title;
-  final String subtitle;
-  final String? path;
-  const _DemoMedia(this.title, this.subtitle, [this.path]);
-}
-
-/// What is playing; null = nothing.
-final _nowPlaying = ValueNotifier<_DemoMedia?>(null);
-Player? _demoPlayer;
-VideoController? _demoVideo;
-
-Future<void> _playMedia(_DemoMedia m) async {
-  _nowPlaying.value = m;
-  if (m.path == null) return;
-  final p = _demoPlayer ??= Player();
-  _demoVideo ??= VideoController(p);
-  await p.open(Media(m.path!));
-}
-
-Future<void> _disposeDemoPlayer() async {
-  final p = _demoPlayer;
-  _demoPlayer = null;
-  _demoVideo = null;
-  _nowPlaying.value = null;
-  await p?.dispose();
-}
-
-String _fmt(Duration d) {
-  final h = d.inHours, m = d.inMinutes % 60, s = d.inSeconds % 60;
-  String two(int n) => n.toString().padLeft(2, '0');
-  return h > 0 ? '$h:${two(m)}:${two(s)}' : '${two(m)}:${two(s)}';
-}
-
-/// The video itself, or a placeholder when nothing real is open.
-class _VideoSurface extends StatelessWidget {
-  final double placeholderSize;
-  const _VideoSurface({this.placeholderSize = 32});
-
-  @override
-  Widget build(BuildContext context) {
-    final v = _demoVideo;
-    if (v == null || _nowPlaying.value?.path == null) {
-      return Container(
-        color: Colors.black,
-        alignment: Alignment.center,
-        child: Text(
-          'video · play something from Files',
-          textAlign: TextAlign.center,
-          style: TextStyle(
-            color: Colors.white24,
-            fontSize: placeholderSize * 0.6,
-          ),
-        ),
-      );
-    }
-    return Video(controller: v, controls: NoVideoControls, fill: Colors.black);
-  }
-}
-
-/// Position bar + play/pause + time, bound to the real player (inert
-/// when nothing is open).
-class _Transport extends StatelessWidget {
-  final bool compact;
-  final List<Widget> trailing;
-  const _Transport({this.compact = false, this.trailing = const []});
-
-  @override
-  Widget build(BuildContext context) {
-    final p = _demoPlayer;
-    if (p == null) {
-      return Row(
-        children: [
-          const IconButton(
-            onPressed: null,
-            icon: Icon(Icons.play_arrow, color: Colors.white38),
-          ),
-          const Text('--:-- / --:--', style: TextStyle(color: Colors.white38)),
-          const Spacer(),
-          ...trailing,
-        ],
-      );
-    }
-    return StreamBuilder<Duration>(
-      stream: p.stream.position,
-      builder: (context, _) {
-        final pos = p.state.position, dur = p.state.duration;
-        final frac = dur.inMilliseconds == 0
-            ? 0.0
-            : pos.inMilliseconds / dur.inMilliseconds;
-        final bar = SliderTheme(
-          data: SliderTheme.of(context).copyWith(
-            trackHeight: compact ? 3 : 4,
-            thumbShape: RoundSliderThumbShape(
-              enabledThumbRadius: compact ? 0 : 7,
-            ),
-            overlayShape: SliderComponentShape.noOverlay,
-          ),
-          child: Slider(
-            value: frac.clamp(0.0, 1.0),
-            onChanged: dur == Duration.zero ? null : (v) => p.seek(dur * v),
-          ),
-        );
-        final row = Row(
-          children: [
-            StreamBuilder<bool>(
-              stream: p.stream.playing,
-              builder: (context, _) => IconButton(
-                onPressed: p.playOrPause,
-                icon: Icon(
-                  p.state.playing ? Icons.pause : Icons.play_arrow,
-                  color: Colors.white,
-                ),
-              ),
-            ),
-            Text(
-              '${_fmt(pos)} / ${_fmt(dur)}',
-              style: TextStyle(
-                color: Colors.white70,
-                fontSize: compact ? 12 : 14,
-              ),
-            ),
-            const Spacer(),
-            ...trailing,
-          ],
-        );
-        return Column(
-          mainAxisSize: MainAxisSize.min,
-          children: [if (!compact) bar, row, if (compact) bar],
-        );
-      },
-    );
-  }
-}
-
-/// Full and fullscreen player. Controls fade out after 2.5 s without the
-/// mouse moving; in fullscreen the party sits top-right and toasts stay.
-class _RealFullPlayer extends StatefulWidget {
-  final bool fullscreen;
-  final VoidCallback onCollapse, onToggleFullscreen;
-  final Widget? partyOverlay;
-  const _RealFullPlayer({
-    required this.fullscreen,
-    required this.onCollapse,
-    required this.onToggleFullscreen,
-    this.partyOverlay,
-  });
-
-  @override
-  State<_RealFullPlayer> createState() => _RealFullPlayerState();
-}
-
-class _RealFullPlayerState extends State<_RealFullPlayer> {
-  bool _shown = true;
-  Timer? _hide;
-
-  void _poke() {
-    if (!_shown) setState(() => _shown = true);
-    _hide?.cancel();
-    _hide = Timer(const Duration(milliseconds: 2500), () {
-      if (mounted) setState(() => _shown = false);
-    });
-  }
-
-  @override
-  void initState() {
-    super.initState();
-    _poke();
-  }
-
-  @override
-  void dispose() {
-    _hide?.cancel();
-    super.dispose();
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    final m = _nowPlaying.value;
-    final controls = AnimatedOpacity(
-      duration: _easeTime,
-      curve: _ease,
-      opacity: _shown ? 1 : 0,
-      child: IgnorePointer(
-        ignoring: !_shown,
-        child: Stack(
-          children: [
-            Positioned(
-              left: 0,
-              right: 0,
-              top: 0,
-              child: Container(
-                padding: const EdgeInsets.fromLTRB(16, 12, 8, 28),
-                decoration: const BoxDecoration(
-                  gradient: LinearGradient(
-                    begin: Alignment.topCenter,
-                    end: Alignment.bottomCenter,
-                    colors: [Colors.black87, Colors.transparent],
-                  ),
-                ),
-                child: Row(
-                  children: [
-                    Container(
-                      width: 34,
-                      height: 48,
-                      decoration: BoxDecoration(
-                        color: Colors.white12,
-                        borderRadius: BorderRadius.circular(4),
-                      ),
-                    ),
-                    const SizedBox(width: 12),
-                    Expanded(
-                      child: Column(
-                        crossAxisAlignment: CrossAxisAlignment.start,
-                        children: [
-                          Text(
-                            m?.title ?? 'Nothing playing',
-                            maxLines: 1,
-                            overflow: TextOverflow.ellipsis,
-                            style: const TextStyle(
-                              color: Colors.white,
-                              fontWeight: FontWeight.w600,
-                              fontSize: 16,
-                            ),
-                          ),
-                          Text(
-                            m?.subtitle ?? '',
-                            style: const TextStyle(color: Colors.white60),
-                          ),
-                        ],
-                      ),
-                    ),
-                    if (widget.partyOverlay != null) ...[
-                      widget.partyOverlay!,
-                      const SizedBox(width: 8),
-                    ],
-                    if (!widget.fullscreen)
-                      IconButton(
-                        onPressed: widget.onCollapse,
-                        tooltip: 'Back to the library (keeps playing)',
-                        icon: const Icon(
-                          Icons.close_fullscreen,
-                          color: Colors.white,
-                        ),
-                      ),
-                  ],
-                ),
-              ),
-            ),
-            Positioned(
-              left: 0,
-              right: 0,
-              bottom: 0,
-              child: Container(
-                padding: const EdgeInsets.fromLTRB(16, 32, 16, 10),
-                decoration: const BoxDecoration(
-                  gradient: LinearGradient(
-                    begin: Alignment.bottomCenter,
-                    end: Alignment.topCenter,
-                    colors: [Colors.black87, Colors.transparent],
-                  ),
-                ),
-                child: _Transport(
-                  trailing: [
-                    Builder(
-                      builder: (context) => IconButton(
-                        tooltip: 'Player settings',
-                        onPressed: () => _popover(
-                          context,
-                          at: const Alignment(0.97, 0.78),
-                          child: const _PlayerSettingsCard(),
-                        ),
-                        icon: const Icon(Icons.tune, color: Colors.white),
-                      ),
-                    ),
-                    IconButton(
-                      tooltip: widget.fullscreen
-                          ? 'Exit fullscreen (Esc)'
-                          : 'Fullscreen (F)',
-                      onPressed: widget.onToggleFullscreen,
-                      icon: Icon(
-                        widget.fullscreen
-                            ? Icons.fullscreen_exit
-                            : Icons.fullscreen,
-                        color: Colors.white,
-                      ),
-                    ),
-                  ],
-                ),
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-    return CallbackShortcuts(
-      bindings: {
-        const SingleActivator(LogicalKeyboardKey.keyF):
-            widget.onToggleFullscreen,
-        const SingleActivator(LogicalKeyboardKey.escape): () {
-          if (widget.fullscreen) widget.onToggleFullscreen();
-        },
-        const SingleActivator(LogicalKeyboardKey.space): () =>
-            _demoPlayer?.playOrPause(),
-      },
-      child: Focus(
-        autofocus: true,
-        child: MouseRegion(
-          onHover: (_) => _poke(),
-          cursor: _shown ? MouseCursor.defer : SystemMouseCursors.none,
-          child: GestureDetector(
-            onDoubleTap: widget.onToggleFullscreen,
-            onTap: () => _demoPlayer?.playOrPause(),
-            child: Container(
-              color: Colors.black,
-              child: Stack(
-                children: [
-                  const Positioned.fill(child: _VideoSurface()),
-                  Positioned.fill(child: controls),
-                  // A thin progress line stays when the controls hide.
-                  if (!_shown && _demoPlayer != null)
-                    const Positioned(
-                      left: 0,
-                      right: 0,
-                      bottom: 0,
-                      child: _ThinProgress(),
-                    ),
-                  // Paused: who everyone is waiting for, always visible.
-                  Positioned(
-                    left: 0,
-                    right: 0,
-                    bottom: _shown ? 96 : 28,
-                    child: const Center(child: _WaitingPill()),
-                  ),
-                  // Fullscreen with the controls hidden: the party stays
-                  // in the corner while paused.
-                  if (widget.fullscreen &&
-                      !_shown &&
-                      widget.partyOverlay != null)
-                    Positioned(
-                      right: 16,
-                      top: 14,
-                      child: _PausedOnly(child: widget.partyOverlay!),
-                    ),
-                ],
-              ),
-            ),
-          ),
-        ),
-      ),
-    );
-  }
-}
-
-class _ThinProgress extends StatelessWidget {
-  const _ThinProgress();
-
-  @override
-  Widget build(BuildContext context) {
-    final p = _demoPlayer!;
-    return StreamBuilder<Duration>(
-      stream: p.stream.position,
-      builder: (context, _) {
-        final d = p.state.duration.inMilliseconds;
-        return LinearProgressIndicator(
-          value: d == 0 ? 0 : p.state.position.inMilliseconds / d,
-          minHeight: 2,
-          backgroundColor: Colors.transparent,
-        );
-      },
-    );
-  }
-}
-
-/// The gear in the player: everything about the player lives here.
-class _PlayerSettingsCard extends StatefulWidget {
-  const _PlayerSettingsCard();
-
-  @override
-  State<_PlayerSettingsCard> createState() => _PlayerSettingsCardState();
-}
-
-class _PlayerSettingsCardState extends State<_PlayerSettingsCard> {
-  String _design = 'Standard';
-  bool _line = true;
-  String _shader = 'Off';
-  String _hwdec = 'Auto';
-  double _subSize = 1;
-
-  Widget _row(String label, Widget control, {String? help}) => Padding(
-    padding: const EdgeInsets.symmetric(vertical: 6),
-    child: Row(
-      children: [
-        Expanded(
-          child: Column(
-            crossAxisAlignment: CrossAxisAlignment.start,
-            children: [
-              Text(label),
-              if (help != null)
-                Text(
-                  help,
-                  style: const TextStyle(color: Colors.grey, fontSize: 11),
-                ),
-            ],
-          ),
-        ),
-        control,
-      ],
-    ),
-  );
-
-  Widget _drop(String value, List<String> items, ValueChanged<String> on) =>
-      DropdownButton<String>(
-        value: value,
-        underline: const SizedBox.shrink(),
-        borderRadius: BorderRadius.circular(10),
-        items: [
-          for (final i in items) DropdownMenuItem(value: i, child: Text(i)),
-        ],
-        onChanged: (v) => setState(() => on(v!)),
-      );
-
-  @override
-  Widget build(BuildContext context) {
-    return Material(
-      elevation: 12,
-      borderRadius: BorderRadius.circular(16),
-      child: SizedBox(
-        width: 380,
-        child: Padding(
-          padding: const EdgeInsets.fromLTRB(18, 14, 18, 10),
-          child: Column(
-            mainAxisSize: MainAxisSize.min,
-            crossAxisAlignment: CrossAxisAlignment.stretch,
-            children: [
-              const Text(
-                'Player',
-                style: TextStyle(fontWeight: FontWeight.w700, fontSize: 16),
-              ),
-              const SizedBox(height: 6),
-              _row(
-                'Player design',
-                _drop(_design, const ['Standard', 'uosc'], (v) => _design = v),
-              ),
-              _row(
-                'Progress line when hidden',
-                Switch(
-                  value: _line,
-                  onChanged: (v) => setState(() => _line = v),
-                ),
-                help: 'A thin bar at the bottom while the controls are hidden',
-              ),
-              _row(
-                'Upscaling shader',
-                _drop(_shader, const [
-                  'Off',
-                  'Anime4K A (HQ)',
-                  'Anime4K B (HQ)',
-                  'Anime4K A (Fast)',
-                ], (v) => _shader = v),
-                help: 'Runs on your GPU; only you see it',
-              ),
-              _row(
-                'Hardware decoding',
-                _drop(_hwdec, const ['Auto', 'On', 'Off'], (v) => _hwdec = v),
-              ),
-              const Divider(),
-              _row(
-                'Subtitles',
-                _drop('English · ASS', const [
-                  'Off',
-                  'English · ASS',
-                  'Signs only',
-                ], (_) {}),
-              ),
-              _row(
-                'Subtitle size',
-                SizedBox(
-                  width: 140,
-                  child: Slider(
-                    value: _subSize,
-                    min: 0.6,
-                    max: 1.6,
-                    onChanged: (v) => setState(() => _subSize = v),
-                  ),
-                ),
-              ),
-              _row(
-                'Audio',
-                _drop('Japanese', const ['Japanese', 'English'], (_) {}),
-              ),
-              const SizedBox(height: 4),
-              const Text(
-                'Track choices carry to the next episode.',
-                style: TextStyle(color: Colors.grey, fontSize: 11),
-              ),
-            ],
-          ),
-        ),
-      ),
-    );
-  }
-}
-
-/// Shows [child] only while the demo player is paused (or has nothing).
-class _PausedOnly extends StatelessWidget {
-  final Widget child;
-  const _PausedOnly({required this.child});
-
-  @override
-  Widget build(BuildContext context) {
-    final p = _demoPlayer;
-    return StreamBuilder<bool>(
-      stream: p?.stream.playing,
-      builder: (context, _) {
-        final paused = p == null || !p.state.playing;
-        return AnimatedOpacity(
-          duration: _easeTime,
-          curve: _ease,
-          opacity: paused ? 1 : 0,
-          child: IgnorePointer(ignoring: !paused, child: child),
-        );
-      },
-    );
-  }
-}
-
-/// "Waiting for Alex, Mika" or "Waiting for you · press Space", with
-/// their avatars; only while paused.
-class _WaitingPill extends StatelessWidget {
-  const _WaitingPill();
-
-  @override
-  Widget build(BuildContext context) {
-    final notReady = _members.where((m) => !m.ready && !m.stale).toList();
-    final meWaiting = !_me.value.ready;
-    final text = meWaiting
-        ? 'Waiting for you · press Space when ready'
-        : notReady.isEmpty
-        ? 'Paused'
-        : 'Waiting for ${notReady.map((m) => m.name).join(', ')}';
-    return _PausedOnly(
-      child: Container(
-        padding: const EdgeInsets.fromLTRB(8, 6, 16, 6),
-        decoration: BoxDecoration(
-          color: Colors.black.withValues(alpha: 0.72),
-          borderRadius: BorderRadius.circular(30),
-          border: Border.all(color: Colors.white12),
-        ),
-        child: Row(
-          mainAxisSize: MainAxisSize.min,
-          children: [
-            for (final m in (meWaiting ? [_me.value] : notReady).take(4))
-              Padding(
-                padding: const EdgeInsets.only(right: 4),
-                child: _Avatar(member: m, size: 28),
-              ),
-            const SizedBox(width: 6),
-            Text(
-              text,
-              style: const TextStyle(
-                color: Colors.white,
-                fontWeight: FontWeight.w600,
-              ),
-            ),
-          ],
-        ),
-      ),
-    );
-  }
-}

apps/desktop/lib/src/screens/demo/demo_settings.dart

@@ -1,355 +0,0 @@
-part of 'shell_demo.dart';
-
-// DEBUG ONLY: the Settings tab. App-wide things only; everything about
-// the player lives behind the gear in the player (pointer card at the top
-// of every page). Controls are placeholders that hold their own state.
-
-class _SettingsTab extends StatefulWidget {
-  final VoidCallback onOpenPlayerSettings;
-  const _SettingsTab({required this.onOpenPlayerSettings});
-
-  @override
-  State<_SettingsTab> createState() => _SettingsTabState();
-}
-
-class _SettingsTabState extends State<_SettingsTab> {
-  static const _sections = [
-    (Icons.person_outline, 'Profile'),
-    (Icons.hub_outlined, 'Party & network'),
-    (Icons.extension_outlined, 'Jellyfin & integrations'),
-    (Icons.notifications_none, 'Notifications & sounds'),
-    (Icons.palette_outlined, 'Appearance'),
-    (Icons.system_update_alt, 'Updates'),
-    (Icons.info_outline, 'About'),
-  ];
-  int _at = 0;
-  final _bools = <String, bool>{
-    'toast-chat': true,
-    'toast-ready': true,
-    'toast-seek': false,
-    'unfocused': true,
-    'sounds': true,
-    'reduce-motion': false,
-    'auto-update': true,
-    'auto-next': true,
-    'remember-folders': true,
-  };
-
-  Widget _switch(String key, String title, [String? help]) => SwitchListTile(
-    contentPadding: EdgeInsets.zero,
-    title: Text(title),
-    subtitle: help == null ? null : Text(help),
-    value: _bools[key]!,
-    onChanged: (v) => setState(() => _bools[key] = v),
-  );
-
-  // Material, not a coloured box: list tiles paint their ripple on it.
-  Widget _card(String title, List<Widget> children) => Padding(
-    padding: const EdgeInsets.only(bottom: 16),
-    child: Material(
-      color: Theme.of(context).colorScheme.surfaceContainerLow,
-      borderRadius: BorderRadius.circular(16),
-      child: Padding(
-        padding: const EdgeInsets.fromLTRB(18, 14, 18, 10),
-        child: Column(
-          crossAxisAlignment: CrossAxisAlignment.start,
-          children: [
-            Text(title, style: const TextStyle(fontWeight: FontWeight.w700)),
-            const SizedBox(height: 6),
-            ...children,
-          ],
-        ),
-      ),
-    ),
-  );
-
-  List<Widget> _page() {
-    final scheme = Theme.of(context).colorScheme;
-    switch (_at) {
-      case 0:
-        return [
-          _card('You', [
-            ListTile(
-              contentPadding: EdgeInsets.zero,
-              leading: _Avatar(member: _me.value, size: 48, badges: false),
-              title: Text(_me.value.name),
-              subtitle: const Text(
-                'Name, picture and colour: click your avatar in the top left',
-              ),
-            ),
-          ]),
-        ];
-      case 1:
-        return [
-          _card('Hosting', [
-            const ListTile(
-              contentPadding: EdgeInsets.zero,
-              title: Text('Default port'),
-              trailing: Text('8080'),
-            ),
-            const ListTile(
-              contentPadding: EdgeInsets.zero,
-              title: Text('Password'),
-              subtitle: Text(
-                'Asked when you host; blank = anyone who reaches the port can join',
-              ),
-            ),
-            const ListTile(
-              contentPadding: EdgeInsets.zero,
-              title: Text('Relay buffer'),
-              subtitle: Text('Memory the server keeps for relayed videos'),
-              trailing: Text('256 MB ahead · 64 MB back'),
-            ),
-          ]),
-          _card('Recent servers', [
-            for (final s in [
-              'VPS · vps.example:8080',
-              'Bob · 192.168.1.20:8080',
-            ])
-              ListTile(
-                contentPadding: EdgeInsets.zero,
-                leading: const Icon(Icons.dns_outlined),
-                title: Text(s),
-                trailing: IconButton(
-                  onPressed: () {},
-                  icon: const Icon(Icons.close, size: 18),
-                ),
-              ),
-          ]),
-        ];
-      case 2:
-        return [
-          _card('Jellyfin', [
-            for (final (name, user) in [
-              ('Senko Jellyfin', 'foxyz'),
-              ('Bob\'s box', 'guest'),
-            ])
-              ListTile(
-                contentPadding: EdgeInsets.zero,
-                leading: const Icon(Icons.video_library_outlined),
-                title: Text(name),
-                subtitle: Text('signed in as $user'),
-                trailing: TextButton(
-                  onPressed: () {},
-                  child: const Text('Sign out'),
-                ),
-              ),
-            TextButton.icon(
-              onPressed: () {},
-              icon: const Icon(Icons.add),
-              label: const Text('Add a Jellyfin server'),
-            ),
-          ]),
-          _card('AnimeFlow', [
-            ListTile(
-              contentPadding: EdgeInsets.zero,
-              leading: const Icon(Icons.downloading_outlined),
-              title: const Text('anime.senkochan.moe'),
-              subtitle: const Text(
-                'Uses your Senko Jellyfin sign-in · can view, request, approve',
-              ),
-              trailing: _Pill('connected', Colors.greenAccent.shade400),
-            ),
-            Text(
-              'Powers the Schedule tab: what is downloaded, downloading or missing, and requests.',
-              style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12),
-            ),
-          ]),
-          _card('Local files', [
-            _switch(
-              'remember-folders',
-              'Remember folders',
-              'Folders added in Files stay between launches',
-            ),
-          ]),
-        ];
-      case 3:
-        return [
-          _card('Pop-ups', [
-            _switch('toast-chat', 'Chat messages'),
-            _switch('toast-ready', 'Ready / joined / left'),
-            _switch(
-              'toast-seek',
-              'Seeks and skips',
-              'Always in the activity log',
-            ),
-            _switch(
-              'unfocused',
-              'Desktop notification when the app is in the background',
-            ),
-          ]),
-          _card('Sounds', [
-            _switch(
-              'sounds',
-              'Play sounds',
-              'Soft cues for ready, join and chat; seeks stay silent',
-            ),
-          ]),
-        ];
-      case 4:
-        return [
-          _card('Look', [
-            const ListTile(
-              contentPadding: EdgeInsets.zero,
-              title: Text('Theme'),
-              trailing: Text('Dark'),
-            ),
-            _switch(
-              'reduce-motion',
-              'Reduce motion',
-              'Fades instead of slides, no spreading avatars',
-            ),
-          ]),
-          _card('Playback', [
-            _switch(
-              'auto-next',
-              'Play the next episode automatically',
-              '10 s countdown at the end',
-            ),
-          ]),
-        ];
-      case 5:
-        return [
-          _card('Updates', [
-            ListTile(
-              contentPadding: EdgeInsets.zero,
-              title: const Text('Watch together 0.2.2'),
-              subtitle: const Text('0.3.0 is available'),
-              trailing: FilledButton(
-                onPressed: () {},
-                child: const Text('Update and restart'),
-              ),
-            ),
-            _switch('auto-update', 'Check for updates on launch'),
-          ]),
-        ];
-      default:
-        return [
-          _card('About', [
-            const Text(
-              'Watch together for friends: synced playback, Jellyfin, relay.',
-            ),
-            const SizedBox(height: 8),
-            Text(
-              'mpv · media_kit · Flutter',
-              style: TextStyle(color: scheme.onSurfaceVariant),
-            ),
-          ]),
-        ];
-    }
-  }
-
-  @override
-  Widget build(BuildContext context) {
-    final scheme = Theme.of(context).colorScheme;
-    final pointer = Container(
-      margin: const EdgeInsets.only(bottom: 16),
-      padding: const EdgeInsets.all(14),
-      decoration: BoxDecoration(
-        color: scheme.primary.withValues(alpha: 0.08),
-        borderRadius: BorderRadius.circular(16),
-      ),
-      child: Row(
-        children: [
-          Icon(Icons.tune, color: scheme.primary),
-          const SizedBox(width: 12),
-          const Expanded(
-            child: Text(
-              'Player design, shaders, subtitles and audio live in the player: the ⚙ in its controls.',
-            ),
-          ),
-          TextButton(
-            onPressed: widget.onOpenPlayerSettings,
-            child: const Text('Open player settings'),
-          ),
-        ],
-      ),
-    );
-    return LayoutBuilder(
-      builder: (context, box) {
-        final narrow = box.maxWidth < 760;
-        final nav = narrow
-            ? SizedBox(
-                height: 52,
-                child: _HScroll(
-                  builder: (c) => ListView(
-                    controller: c,
-                    scrollDirection: Axis.horizontal,
-                    padding: const EdgeInsets.fromLTRB(20, 8, 20, 4),
-                    children: [
-                      for (var i = 0; i < _sections.length; i++)
-                        Padding(
-                          padding: const EdgeInsets.only(right: 8),
-                          child: ChoiceChip(
-                            label: Text(_sections[i].$2),
-                            selected: _at == i,
-                            onSelected: (_) => setState(() => _at = i),
-                          ),
-                        ),
-                    ],
-                  ),
-                ),
-              )
-            : SizedBox(
-                width: 250,
-                child: ListView(
-                  padding: const EdgeInsets.fromLTRB(16, 20, 8, 20),
-                  children: [
-                    for (var i = 0; i < _sections.length; i++)
-                      ListTile(
-                        selected: _at == i,
-                        shape: RoundedRectangleBorder(
-                          borderRadius: BorderRadius.circular(12),
-                        ),
-                        leading: Icon(_sections[i].$1, size: 20),
-                        title: Text(_sections[i].$2),
-                        onTap: () => setState(() => _at = i),
-                      ),
-                  ],
-                ),
-              );
-        final page = _fadeSwitch(
-          KeyedSubtree(
-            key: ValueKey(_at),
-            child: ListView(
-              padding: const EdgeInsets.fromLTRB(20, 20, 24, 24),
-              children: [
-                Align(
-                  alignment: Alignment.topLeft,
-                  child: ConstrainedBox(
-                    constraints: const BoxConstraints(maxWidth: 760),
-                    child: Column(
-                      crossAxisAlignment: CrossAxisAlignment.stretch,
-                      children: [
-                        Text(
-                          _sections[_at].$2,
-                          style: Theme.of(context).textTheme.headlineSmall,
-                        ),
-                        const SizedBox(height: 14),
-                        pointer,
-                        ..._page(),
-                      ],
-                    ),
-                  ),
-                ),
-              ],
-            ),
-          ),
-        );
-        return narrow
-            ? Column(
-                children: [
-                  nav,
-                  Expanded(child: page),
-                ],
-              )
-            : Row(
-                children: [
-                  nav,
-                  Expanded(child: page),
-                ],
-              );
-      },
-    );
-  }
-}

apps/desktop/lib/src/screens/home/about_page.dart

@@ -1,44 +1,23 @@
-import 'dart:io';
-
 import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
+import 'package:signals/signals_flutter.dart';
 
+import '../../platform/app_log.dart';
+import '../../shell/mark_problem.dart';
+import '../../state/session_state.dart';
+import '../../state/settings.dart';
 import '../../update/update_controller.dart';
-import '../../update/updater.dart';
+import '../../widgets/app_menu.dart';
+import '../../widgets/copy_open.dart';
 import 'settings_page.dart';
 import 'ui.dart';
 import 'update_indicator.dart';
 
-/// Opens [url] in the default browser (no url_launcher dependency).
-Future<bool> openInBrowser(String url) async {
-  try {
-    final ProcessResult r;
-    if (Platform.isWindows) {
-      r = await Process.run('rundll32', ['url.dll,FileProtocolHandler', url]);
-    } else if (Platform.isMacOS) {
-      r = await Process.run('open', [url]);
-    } else {
-      r = await Process.run('xdg-open', [url]);
-    }
-    return r.exitCode == 0;
-  } catch (_) {
-    return false;
-  }
-}
-
-/// Name, version, update state and the source link (Settings → About).
+/// Name, version, update state, the source link and the logs (Settings →
+/// About).
 class AboutPanel extends StatelessWidget {
   final UpdateController? updates;
   const AboutPanel({super.key, this.updates});
 
-  Future<void> _open(BuildContext context) async {
-    final messenger = ScaffoldMessenger.maybeOf(context);
-    if (await openInBrowser(repoUrl)) return;
-    await Clipboard.setData(const ClipboardData(text: repoUrl));
-    messenger?.showSnackBar(
-        const SnackBar(content: Text('Could not open a browser — link copied')));
-  }
-
   @override
   Widget build(BuildContext context) {
     final t = Theme.of(context).textTheme;
@@ -49,7 +28,7 @@ class AboutPanel extends StatelessWidget {
             children: [
               Text(appName, style: t.titleLarge),
               const SizedBox(height: 4),
-              SelectableText('Version $appVersion',
+              SelectableText('Version ${displayVersion()}',
                   style: t.bodyMedium?.copyWith(color: Colors.grey)),
               const SizedBox(height: 4),
               UpdateStatusLine(controller: updates),
@@ -58,20 +37,85 @@ class AboutPanel extends StatelessWidget {
                 children: [
                   Expanded(child: SelectableText(repoUrl, style: t.bodySmall)),
                   IconButton(
-                    tooltip: 'Copy link',
+                    tooltip: ReuseText.copyLink,
                     icon: const Icon(Icons.copy, size: 18),
-                    onPressed: () =>
-                        Clipboard.setData(const ClipboardData(text: repoUrl)),
+                    onPressed: () => copyToClipboard(repoUrl, done: 'Link copied'),
                   ),
                   FilledButton.tonalIcon(
-                    onPressed: () => _open(context),
+                    onPressed: () => openLink(repoUrl),
                     icon: const Icon(Icons.open_in_new, size: 18),
                     label: const Text('Source'),
                   ),
                 ],
               ),
+              const SizedBox(height: kGap),
+              Text('Something went wrong? Copy diagnostics and send them to whoever helps you: '
+                  'versions and the last hours of the log, passwords, tokens and cookies left out. '
+                  'In a session it can add the server\'s session log, everyone\'s lines merged. '
+                  'Mark a problem (Ctrl+Shift+B) when it happens so the spot is easy to find.',
+                  style: t.bodySmall?.copyWith(color: Colors.grey)),
+              const SizedBox(height: 8),
+              Wrap(
+                spacing: 8,
+                runSpacing: 8,
+                children: [
+                  Builder(
+                    builder: (context) => FilledButton.tonalIcon(
+                      key: const ValueKey('copy-diagnostics'),
+                      onPressed: () => _copyDiagnostics(context),
+                      icon: const Icon(Icons.bug_report_outlined, size: 18),
+                      label: const Text('Copy diagnostics'),
+                    ),
+                  ),
+                  const MarkProblemButton(outlined: true),
+                  OutlinedButton.icon(
+                    onPressed: appLogDir == null ? null : () => _openLogs(),
+                    icon: const Icon(Icons.folder_open, size: 18),
+                    label: const Text('Open logs folder'),
+                  ),
+                ],
+              ),
+              const SizedBox(height: 8),
+              SignalBuilder(
+                builder: (context) => SwitchListTile(
+                  key: const ValueKey('share-diagnostics'),
+                  contentPadding: EdgeInsets.zero,
+                  title: const Text('Share diagnostics with the server'),
+                  subtitle: const Text('In a session, this app\'s log goes to the server\'s session log, '
+                      'merged with everyone\'s, so a problem can be read afterwards. Never chat; '
+                      'passwords and tokens left out. Off: only a problem you mark is sent.'),
+                  value: AppSettings.instance.shareDiagnostics.value,
+                  onChanged: AppSettings.instance.setShareDiagnostics,
+                ),
+              ),
             ],
           ),
         );
   }
+
+  /// In a session it asks whether to add the server's session log.
+  static Future<void> _copyDiagnostics(BuildContext context) async {
+    var withServer = false;
+    if (SessionState.instance.route.peek() == AppRoute.session) {
+      final pick = await showAppMenu<bool>(context, items: const [
+        AppMenuItem(value: false, label: "This app's log"),
+        AppMenuItem(value: true, label: "This app's and the server's session log"),
+      ]);
+      if (pick == null) return;
+      withServer = pick;
+    }
+    final text = await diagnosticsText(sessionLog: withServer);
+    final saved = await saveDiagnostics(text);
+    await copyToClipboard(text,
+        done: saved == null ? 'Diagnostics copied' : 'Diagnostics copied (also saved in the logs folder)');
+  }
+
+  static Future<void> _openLogs() async {
+    final dir = appLogDir;
+    if (dir == null) return;
+    // The file manager opens a folder path the way a browser opens a link.
+    if (!await openInBrowser(Uri.directory(dir).toString())) {
+      await copyToClipboard(dir, done: "Couldn't open it — folder path copied");
+    }
+  }
 }

apps/desktop/lib/src/screens/home/connect_flow.dart

@@ -23,10 +23,6 @@ class ConnectFlow extends ChangeNotifier {
   int _attempt = 0;
   bool _disposed = false;
 
-  /// Set when an attempt ends in a kick, so the shell shows the removal
-  /// dialog.
-  void Function(String reason)? onKicked;
-
   @override
   void dispose() {
     _disposed = true;
@@ -101,6 +97,7 @@ class ConnectFlow extends ChangeNotifier {
       _notify();
       return;
     }
+    final fromSolo = mode == ConnectMode.host && _session.solo.value;
     try {
       if (mode == ConnectMode.host) {
         await _session.host(params, form);
@@ -110,20 +107,19 @@ class ConnectFlow extends ChangeNotifier {
     } catch (e) {
       if (myAttempt != _attempt) return;
       busy = null;
-      final kick = _session.coordinator.kickReason.peek();
-      if (kick != null && kick.isNotEmpty) {
-        onKicked?.call(kick);
-      } else {
       errors[mode] = CardError('Could not connect', '$e');
-      }
       _notify();
       return;
     }
     if (myAttempt != _attempt) {
-      // Cancelled after it got through: back out.
+      // Cancelled after it got through: back out (an Invite: back to solo).
       try {
+        if (fromSolo) {
+          await _session.cancelInvite();
+        } else {
           await _session.leave();
           await _session.stopServer();
+        }
       } catch (_) {}
       return;
     }

apps/desktop/lib/src/screens/home/media_picker.dart

@@ -27,7 +27,8 @@ class MediaPickerController extends ChangeNotifier {
   final TextEditingController link;
   final TextEditingController file;
   MediaKind _source;
-  LinkRelay _linkRelay = LinkRelay.direct;
+  // Through me unless picked otherwise (Library → Link).
+  LinkRelay _linkRelay = LinkRelay.me;
   JellyfinMedia? _jellyfin;
   JellyfinSelection? _selected;
 

apps/desktop/lib/src/screens/home/picked_media.dart

@@ -16,7 +16,10 @@ enum LinkRelay { direct, server, me }
 final class LinkMedia extends PickedMedia {
   final String url;
   final LinkRelay relay;
-  const LinkMedia(this.url, {this.relay = LinkRelay.direct});
+  /// Put it up even though this computer's probe found a problem
+  /// (`LinkProbe.problem`): the server or a friend may still open it.
+  final bool anyway;
+  const LinkMedia(this.url, {this.relay = LinkRelay.direct, this.anyway = false});
 
   @override
   String get label {
@@ -119,3 +122,7 @@ final class JellyfinMedia extends PickedMedia {
   @override
   String toString() => 'JellyfinMedia($serverId/$itemId "$title")';
 }
+
+/// Adds a pick to Up next (with [next]: right after what plays); returns
+/// an error text, or null when sent. Null where there is no server.
+typedef AddToQueue = Future<String?> Function(PickedMedia media, {bool next});

apps/desktop/lib/src/screens/home/settings_page.dart

@@ -7,11 +7,12 @@ import '../../update/update_controller.dart';
 import 'ui.dart';
 import 'update_indicator.dart';
 
-/// Player keys, as handled by the session player's key handler (while
-/// the player fills the window).
+/// Session keys: Space and Tab anywhere in a server (`AppKeys`), the
+/// rest by the session player's key handler (while it fills the window).
 const sessionShortcuts = [
   ('Space', 'Toggle ready'),
   ('← / →', 'Seek back / forward 10 s'),
+  ('↑ / ↓, wheel', 'Volume up / down (up to 150 %)'),
   ('Shift+→', 'Skip 1:30 (for everyone)'),
   ('PgUp / PgDn', 'Previous / next chapter'),
   ('F', 'Toggle fullscreen'),
@@ -21,7 +22,8 @@ const sessionShortcuts = [
   ('< or Shift+P', 'Put up the previous Jellyfin episode'),
   ('Ctrl+1…6', 'Shaders: Anime4K mode A, B, C, A+A, B+B, C+A'),
   ('Ctrl+0', 'Shaders off'),
-  ('Esc', 'Close the panel or fullscreen, else ask to leave'),
+  ('Esc', 'Close the panel or fullscreen, shrink the player, then ask to leave'),
+  ('Ctrl+Shift+B', 'Mark a problem in the session log (anywhere)'),
 ];
 
 /// One titled card of the Settings tab (rounded Material, so list tiles

apps/desktop/lib/src/screens/home/ui.dart

@@ -1,10 +1,27 @@
 import 'package:flutter/material.dart';
+import 'package:sync_relay_core/core.dart' show appVersion, isDevBuild;
 
 /// Product name (working title). Change it here only.
-const appName = 'Watch Together';
+const appName = 'Starsync';
 
 const repoUrl = 'https://git.senkochan.moe/Foxyz/sync_replay_project';
 
+/// The pubspec's version: the Flutter tool defines it for every build and
+/// run (`flutter run` too).
+const _pubspecVersion = String.fromEnvironment('FLUTTER_BUILD_NAME');
+
+/// The short commit a packaged build was made from (`tool/package_linux.sh`;
+/// `-dirty` with uncommitted changes); empty otherwise.
+const _gitCommit = String.fromEnvironment('GIT_COMMIT');
+
+/// The version to show: a release's own ("1.1.2"), a test build's with its
+/// commit ("1.1.3-dev.12 · 1a2b3c4"), and for a dev run (no `APP_VERSION`)
+/// the pubspec's with "dev" ("1.1.2 · dev run").
+String displayVersion({String version = appVersion, String pubspec = _pubspecVersion, String commit = _gitCommit}) {
+  if (version == '0.0.0-dev') return pubspec.isEmpty ? 'dev run' : '$pubspec · dev run';
+  return isDevBuild(version) && commit.isNotEmpty ? '$version · $commit' : version;
+}
+
 const kRadius = 12.0;
 const kGap = 16.0;
 

apps/desktop/lib/src/screens/session/jellyfin_widgets.dart

@@ -2,6 +2,7 @@ import 'package:flutter/material.dart';
 
 import '../../jellyfin/session_media.dart';
 import '../../session/session_coordinator.dart' show AutoAdvance, autoAdvanceSecs;
+import '../../widgets/app_menu.dart' show AppGlass;
 import 'player_controls.dart' show FloatingPill;
 
 // Jellyfin pieces of the session player. Plain widgets fed by the
@@ -36,9 +37,8 @@ class EpisodeSkipButton extends StatelessWidget {
   }
 }
 
-/// Floating "Next episode ›" from the ED (or the last two minutes):
-/// faint at rest, lit on hover. Lives outside the auto-hiding controls, so
-/// it shows in fullscreen and with the controls hidden.
+/// Floating "Next episode ›" from the ED (or the last two minutes), while
+/// the controls are up (`PillGate`): faint at rest, lit on hover.
 class NextEpisodePill extends StatelessWidget {
   final EpisodeLink episode;
   final VoidCallback onPressed;
@@ -70,27 +70,36 @@ class EndOfEpisodeCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final t = Theme.of(context).textTheme;
     final c = countdown;
-    return Card(
+    // The same card as Up next's (`UpNextCard`): the app's glass, 400 wide.
+    return AppGlass(
       key: const ValueKey('end-of-episode'),
-      color: Colors.black.withValues(alpha: 0.85),
+      child: SizedBox(
+        width: 400,
         child: Padding(
-        padding: const EdgeInsets.fromLTRB(16, 12, 12, 12),
-        child: ConstrainedBox(
-          constraints: const BoxConstraints(maxWidth: 380),
+          padding: const EdgeInsets.all(12),
           child: Column(
             mainAxisSize: MainAxisSize.min,
-            crossAxisAlignment: CrossAxisAlignment.start,
+            crossAxisAlignment: CrossAxisAlignment.stretch,
             children: [
               Text(c == null ? 'Up next' : 'Next episode in ${c.secondsLeft} s',
-                  style: t.labelLarge?.copyWith(color: Colors.white70)),
-              const SizedBox(height: 4),
+                  style: const TextStyle(color: Colors.white60, fontSize: 12)),
+              const SizedBox(height: 2),
               Text('Next: ${next.label}',
-                  maxLines: 2, overflow: TextOverflow.ellipsis, style: t.titleMedium),
+                  maxLines: 2,
+                  overflow: TextOverflow.ellipsis,
+                  style: const TextStyle(color: Colors.white, fontSize: 15, fontWeight: FontWeight.w600, height: 1.25)),
               if (c != null) ...[
-                const SizedBox(height: 8),
-                LinearProgressIndicator(value: c.secondsLeft / autoAdvanceSecs),
+                const SizedBox(height: 10),
+                ClipRRect(
+                  borderRadius: BorderRadius.circular(2),
+                  child: TweenAnimationBuilder<double>(
+                    tween: Tween(end: c.secondsLeft / autoAdvanceSecs),
+                    duration: const Duration(seconds: 1),
+                    builder: (context, v, _) =>
+                        LinearProgressIndicator(value: v, minHeight: 3, backgroundColor: const Color(0x1FFFFFFF)),
+                  ),
+                ),
               ],
               const SizedBox(height: 10),
               Row(
@@ -166,25 +175,3 @@ class JellyfinBlockedCard extends StatelessWidget {
     );
   }
 }
-
-/// Small member-list badge: plays the Jellyfin item through the host.
-class ViaHostBadge extends StatelessWidget {
-  const ViaHostBadge({super.key});
-
-  @override
-  Widget build(BuildContext context) {
-    return Tooltip(
-      message: 'No Jellyfin account here: watches through the host',
-      child: Container(
-        key: const ValueKey('via-host'),
-        padding: const EdgeInsets.symmetric(horizontal: 6, vertical: 1),
-        decoration: BoxDecoration(
-          color: Colors.white10,
-          borderRadius: BorderRadius.circular(999),
-          border: Border.all(color: Colors.white24),
-        ),
-        child: const Text('via host', style: TextStyle(fontSize: 10, color: Colors.white70)),
-      ),
-    );
-  }
-}

apps/desktop/lib/src/screens/session/player_controls.dart

@@ -7,6 +7,7 @@ import 'package:sync_relay_core/core.dart' show JellyfinStreamType;
 
 import '../../jellyfin/track_prefs.dart' show MpvTrack;
 import '../../playback/media_marks.dart';
+import '../../widgets/app_menu.dart' show AppGlass;
 
 // Session control-bar pieces built on the playback signals (chapters,
 // tracks, skip offers): the seek bar with chapter marks, the chapter and
@@ -525,10 +526,13 @@ class SkipForwardButton extends StatelessWidget {
   }
 }
 
-/// Floating pill over the video (Next episode, Skip OP / ED / 1:30):
-/// faint at rest, lit on hover. Lives outside the auto-hiding controls, so
-/// it shows in fullscreen and with the controls hidden.
+/// The player's action pill (Next episode, Skip OP / ED / 1:30): the
+/// status pill's glass ([AppGlass.pill]) at [height], faint at rest, lit
+/// on hover. Lives in the player's action area, outside the auto-hiding
+/// controls (also in fullscreen); `PillGate` shows it with them.
 class FloatingPill extends StatefulWidget {
+  /// Every action pill's height: the status pill's without avatars.
+  static const height = 44.0;
   final String label;
   final String tooltip;
   final IconData icon;
@@ -540,7 +544,7 @@ class FloatingPill extends StatefulWidget {
     required this.label,
     required this.tooltip,
     required this.onPressed,
-    this.icon = Icons.chevron_right,
+    this.icon = Icons.chevron_right_rounded,
     this.tapKey,
   });
 
@@ -553,38 +557,31 @@ class _FloatingPillState extends State<FloatingPill> {
 
   @override
   Widget build(BuildContext context) {
-    final primary = Theme.of(context).colorScheme.primary;
+    const fade = Duration(milliseconds: 150);
     return MouseRegion(
       cursor: SystemMouseCursors.click,
       onEnter: (_) => setState(() => _hover = true),
       onExit: (_) => setState(() => _hover = false),
       child: Tooltip(
         message: widget.tooltip,
-        child: AnimatedScale(
-          duration: const Duration(milliseconds: 150),
-          scale: _hover ? 1.06 : 1,
         child: AnimatedOpacity(
-            duration: const Duration(milliseconds: 150),
+          duration: fade,
           opacity: _hover ? 1 : 0.45,
           child: GestureDetector(
             key: widget.tapKey,
             onTap: widget.onPressed,
+            child: AppGlass.pill(
               child: AnimatedContainer(
-                duration: const Duration(milliseconds: 150),
-                padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 9),
-                decoration: BoxDecoration(
-                  color: Colors.black.withValues(alpha: 0.75),
-                  borderRadius: BorderRadius.circular(999),
-                  border: Border.all(color: _hover ? primary : Colors.white24),
-                  boxShadow: _hover
-                      ? [BoxShadow(color: primary.withValues(alpha: 0.45), blurRadius: 16)]
-                      : const [],
-                ),
+                duration: fade,
+                height: FloatingPill.height,
+                padding: const EdgeInsets.only(left: 16, right: 12),
+                color: _hover ? Colors.white12 : Colors.transparent,
                 child: Row(
                   mainAxisSize: MainAxisSize.min,
                   children: [
-                    Text(widget.label, style: const TextStyle(color: Colors.white, fontSize: 13)),
-                    const SizedBox(width: 4),
+                    Text(widget.label,
+                        style: const TextStyle(color: Colors.white, fontSize: 14, fontWeight: FontWeight.w600)),
+                    const SizedBox(width: 6),
                     Icon(widget.icon, color: Colors.white, size: 18),
                   ],
                 ),

apps/desktop/lib/src/session/delivery.dart

@@ -0,0 +1,309 @@
+import 'package:sync_relay_core/core.dart';
+
+import '../jellyfin/session_media.dart';
+
+// Who fetches the current media and how it spreads, from the state alone:
+// the members card's source line and each member's route and buffer.
+
+/// "4.1 MB/s", "850 kB/s".
+String formatRate(int bytesPerSec) {
+  if (bytesPerSec >= 1000000) {
+    final mb = bytesPerSec / 1e6;
+    return '${mb.toStringAsFixed(mb >= 10 ? 0 : 1)} MB/s';
+  }
+  return '${(bytesPerSec / 1000).round()} kB/s';
+}
+
+/// How the current media reaches the party.
+enum DeliveryKind {
+  /// A link every app opens itself.
+  link,
+  /// The hosting app's file, read by everyone from its server.
+  hostFile,
+  /// A file the dedicated server was started with.
+  serverFile,
+  /// A member's machine passes it on through the server.
+  memberRelay,
+  /// The server reads the link itself.
+  serverFetch,
+  /// Jellyfin: own accounts, the server's login for the rest.
+  jellyfin,
+}
+
+/// How a member gets the bytes.
+enum DeliveryRoute {
+  /// It serves them (a relay source, the host's file).
+  source,
+  /// It reads them from the server.
+  server,
+  /// It fetches them itself (a link, its own Jellyfin account).
+  direct,
+}
+
+enum BufferHealth { good, low, starving }
+
+/// The relay source's condition.
+enum SourceState {
+  ok,
+  /// Measured slower than the media's bitrate.
+  slow,
+  /// Its channel is down (or the server has not read the link yet).
+  waiting,
+  /// It left the server.
+  left,
+}
+
+/// Members' names by id, kept after they leave: "Foxyz left" needs the
+/// name the state no longer has.
+class MemberNames {
+  final _names = <String, String>{};
+
+  void observe(StateBroadcast r) {
+    if (_names.length > 256) _names.clear();
+    for (final m in r.members) {
+      _names[m.id] = m.name;
+    }
+  }
+
+  String? operator [](String id) => _names[id];
+}
+
+/// The member [m]'s route and buffer.
+class MemberDelivery {
+  /// Null when unknown (a Jellyfin member that has not reported yet).
+  final DeliveryRoute? route;
+  final DeliveryKind kind;
+  /// Bytes per second the server sends it lately.
+  final int rate;
+  /// Null when it does not count: sitting out, reconnecting, cannot play.
+  final BufferHealth? health;
+  final double buffered;
+  /// The media is a Jellyfin item (direct = its own account).
+  final bool jellyfin;
+  const MemberDelivery({
+    required this.route,
+    required this.kind,
+    this.jellyfin = false,
+    required this.rate,
+    required this.health,
+    required this.buffered,
+  });
+
+  /// "via server · 3.2 MB/s", "direct", "passes it on"; empty when unknown.
+  String get short => switch (route) {
+        DeliveryRoute.source => kind == DeliveryKind.hostFile ? 'hosts the file' : 'passes it on',
+        DeliveryRoute.server => rate > 0 ? 'via server · ${formatRate(rate)}' : 'via server',
+        DeliveryRoute.direct => jellyfin ? 'own Jellyfin account' : 'direct',
+        null => '',
+      };
+
+  /// [short] and the buffer: "via server · 3.2 MB/s · 45 s buffered".
+  String get detail => [
+        if (short.isNotEmpty) short,
+        if (health != null) health == BufferHealth.starving ? 'buffer empty' : '${buffered.round()} s buffered',
+      ].join(' · ');
+}
+
+/// The current media's path for everyone: what the members card's source
+/// line says.
+class Delivery {
+  final DeliveryKind kind;
+  /// The member serving it ([DeliveryKind.memberRelay], [DeliveryKind.hostFile]); empty otherwise.
+  final String sourceId;
+  final String sourceName;
+  final bool sourceIsSelf;
+  final SourceState state;
+  /// `media.relay.rate` / `need` (0 unknown).
+  final int rate, need;
+  /// Members (not sitting out, not the source) reading from the server,
+  /// and fetching it themselves.
+  final int viaServer, direct;
+  const Delivery({
+    required this.kind,
+    this.sourceId = '',
+    this.sourceName = '',
+    this.sourceIsSelf = false,
+    this.state = SourceState.ok,
+    this.rate = 0,
+    this.need = 0,
+    this.viaServer = 0,
+    this.direct = 0,
+  });
+
+  bool get relayed => kind == DeliveryKind.memberRelay || kind == DeliveryKind.serverFetch;
+
+  /// Rate against bitrate, both known: 1 = exactly what the media needs.
+  double? get headroom => rate > 0 && need > 0 ? rate / need : null;
+
+  String get title {
+    final who = sourceIsSelf ? 'You' : sourceName;
+    switch (kind) {
+      case DeliveryKind.link:
+        return 'Everyone plays the link directly';
+      case DeliveryKind.serverFile:
+        return 'The server has the file';
+      case DeliveryKind.hostFile:
+        return sourceIsSelf ? 'You host the file' : '$who hosts the file';
+      case DeliveryKind.jellyfin:
+        return viaServer == 0 ? 'Everyone streams it from Jellyfin' : 'From Jellyfin';
+      case DeliveryKind.serverFetch:
+        return switch (state) {
+          SourceState.waiting => 'The server is getting the video…',
+          SourceState.slow => 'The server fetches it slower than it plays',
+          _ => 'The server fetches it',
+        };
+      case DeliveryKind.memberRelay:
+        return switch (state) {
+          SourceState.left => '$sourceName left: playing what the server has',
+          SourceState.waiting => sourceIsSelf ? 'Reconnecting you to the server…' : 'Waiting for $who to reconnect',
+          SourceState.slow => sourceIsSelf ? 'Your upload is slower than the video' : "$who's upload is slower than the video",
+          SourceState.ok => sourceIsSelf ? 'You pass it on through the server' : '$who passes it on through the server',
+        };
+    }
+  }
+
+  /// "3 through the server · 4.1 MB/s, needs 2.3 MB/s"; empty when
+  /// there is nothing to add.
+  String get detail {
+    final parts = <String>[
+      if (direct > 0 && (kind == DeliveryKind.jellyfin || kind == DeliveryKind.memberRelay))
+        '$direct with their own account',
+      if (viaServer > 0 && kind != DeliveryKind.link) '$viaServer through the server',
+      if (rate > 0 && state != SourceState.left) need > 0 ? '${formatRate(rate)}, needs ${formatRate(need)}' : formatRate(rate),
+    ];
+    return parts.join(' · ');
+  }
+
+  /// The hover text: what the numbers mean.
+  String get explain => switch (kind) {
+        DeliveryKind.memberRelay || DeliveryKind.serverFetch => [
+            if (rate > 0)
+              '${kind == DeliveryKind.serverFetch ? 'The server gets' : sourceIsSelf ? 'You send' : '$sourceName sends'} '
+                  '${formatRate(rate)} while the server asks for more.',
+            if (need > 0) 'The video averages ${formatRate(need)}.',
+            if (state == SourceState.slow) 'Slower than the video: the others will pause to buffer.',
+            if (rate == 0) 'The speed shows once bytes have flowed for a few seconds.',
+          ].join(' '),
+        DeliveryKind.hostFile || DeliveryKind.serverFile => 'Everyone else reads the file from the server.',
+        DeliveryKind.jellyfin => 'Members with an account on that Jellyfin stream it themselves; '
+            'the rest through the server.',
+        DeliveryKind.link => 'Each app opens the link itself; the server only keeps time.',
+      };
+}
+
+/// The current media's [Delivery]; null with nothing up or nobody else in
+/// the server. [names] remembers a source that left.
+Delivery? deliveryOf(StateBroadcast r, {required String selfId, MemberNames? names}) {
+  final media = r.media;
+  if (media == null || r.members.length < 2) return null;
+  final rel = media['relay'];
+  final relay = rel is Map ? MediaRelay.fromJson(Map<String, Object?>.from(rel)) : null;
+  final ref = refOfStateMedia(media);
+  final url = media['url'];
+  final kind = relay != null
+      ? (relay.fetch ? DeliveryKind.serverFetch : DeliveryKind.memberRelay)
+      : ref != null
+          ? DeliveryKind.jellyfin
+          : url is String && url.isNotEmpty
+              ? DeliveryKind.link
+              : r.members.any((m) => m.host)
+                  ? DeliveryKind.hostFile
+                  : DeliveryKind.serverFile;
+  final sourceId = switch (kind) {
+    DeliveryKind.memberRelay => relay!.source,
+    DeliveryKind.hostFile => r.members.firstWhere((m) => m.host).id,
+    _ => '',
+  };
+  final source = r.members.where((m) => m.id == sourceId).firstOrNull;
+  var via = 0, direct = 0;
+  for (final m in r.members) {
+    if (m.out || m.id == sourceId) continue;
+    switch (routeOf(m, kind, sourceId, ref, r.relay)) {
+      case DeliveryRoute.server:
+        via++;
+      case DeliveryRoute.direct:
+        direct++;
+      default:
+        break;
+    }
+  }
+  // A Jellyfin item that everyone streams with their own account: the
+  // relay stands by, nothing goes through it.
+  if (kind == DeliveryKind.memberRelay && ref != null && via == 0 && source != null) {
+    return Delivery(kind: DeliveryKind.jellyfin, direct: direct);
+  }
+  final state = relay == null
+      ? SourceState.ok
+      : kind == DeliveryKind.memberRelay && source == null
+          ? SourceState.left
+          : !relay.live
+              ? SourceState.waiting
+              : relay.slow
+                  ? SourceState.slow
+                  : SourceState.ok;
+  return Delivery(
+    kind: kind,
+    sourceId: sourceId,
+    sourceName: source?.name ?? names?[sourceId] ?? 'The member passing it on',
+    sourceIsSelf: sourceId.isNotEmpty && sourceId == selfId,
+    state: state,
+    rate: relay?.rate ?? 0,
+    need: relay?.need ?? 0,
+    viaServer: via,
+    direct: direct,
+  );
+}
+
+/// How [m] gets media of [kind] served by [sourceId]. Jellyfin: by its
+/// last `report.jf` for [ref]'s server ([jellyfinRelay]: the server can
+/// relay it); null before it reported.
+DeliveryRoute? routeOf(MemberView m, DeliveryKind kind, String sourceId, JellyfinRef? ref, bool jellyfinRelay) {
+  if (sourceId.isNotEmpty && m.id == sourceId) return DeliveryRoute.source;
+  switch (kind) {
+    case DeliveryKind.link:
+      return DeliveryRoute.direct;
+    case DeliveryKind.hostFile:
+    case DeliveryKind.serverFile:
+    case DeliveryKind.serverFetch:
+      return DeliveryRoute.server;
+    case DeliveryKind.memberRelay:
+    case DeliveryKind.jellyfin:
+      final own = ref == null ? null : m.jf[ref.serverId];
+      if (own == true) return DeliveryRoute.direct;
+      if (kind == DeliveryKind.memberRelay) return DeliveryRoute.server;
+      return own == false && jellyfinRelay ? DeliveryRoute.server : null;
+  }
+}
+
+/// [m]'s route and buffer for [d] (from [deliveryOf] on [r]).
+MemberDelivery memberDeliveryOf(MemberView m, StateBroadcast r, Delivery d) {
+  final counts = !m.out && !m.stale && m.error.isEmpty;
+  final need = r.bufferNeed;
+  final ref = refOfStateMedia(r.media);
+  final health = !counts
+      ? null
+      : m.buffered >= need
+          ? BufferHealth.good
+          : r.transport == 'playing' && m.buffered < 1
+              ? BufferHealth.starving
+              : BufferHealth.low;
+  return MemberDelivery(
+    route: m.out ? null : routeOf(m, d.kind, d.sourceId, ref, r.relay),
+    kind: d.kind,
+    jellyfin: ref != null,
+    rate: m.rate,
+    health: health,
+    buffered: m.buffered,
+  );
+}
+
+/// What the source is told once per media when it is too slow; null
+/// while it keeps up (or this member is not the source).
+String? slowSourceWarning(StateBroadcast r, String selfId) {
+  final rel = r.media?['relay'];
+  if (rel is! Map || selfId.isEmpty) return null;
+  final relay = MediaRelay.fromJson(Map<String, Object?>.from(rel));
+  if (relay.source != selfId || !relay.slow) return null;
+  return 'Your upload (${formatRate(relay.rate)}) is slower than this video needs '
+      '(${formatRate(relay.need)}): the others will pause to buffer now and then.';
+}

apps/desktop/lib/src/session/media_art.dart

@@ -1,16 +1,19 @@
 import 'dart:async';
 import 'dart:io';
+import 'dart:isolate';
 import 'dart:typed_data';
 
 import 'package:flutter/foundation.dart';
+import 'package:image/image.dart' as img;
 import 'package:sync_relay_core/core.dart';
 
 import '../files/name_parser.dart';
 import '../schedule/anilist.dart';
 
 // Art for media this client swapped in (`art`, see PROTOCOL.md "Media
-// art"): Jellyfin images with this install's account, else an AniList
-// title search. Everything here fails quietly to "no art".
+// art"): Jellyfin images with this install's account, a web link's
+// thumbnail, else an AniList title search. Everything here fails quietly
+// to "no art".
 
 /// Poster and banner bytes; either may be null.
 typedef ArtBytes = ({Uint8List? poster, Uint8List? banner});
@@ -51,7 +54,8 @@ Future<ArtBytes> jellyfinArt(JellyfinClient client, String itemId,
 Future<ArtBytes?> aniListArt(AniListClient aniList, String name,
     {Future<Uint8List?> Function(Uri url, Map<String, String> headers, int maxBytes) fetch = fetchImage}) async {
   final series = parseReleaseName(name).series.trim();
-  if (series.isEmpty) return null;
+  // "1", "2026-10-09": nothing a show could be called.
+  if (!RegExp(r'\p{L}', unicode: true).hasMatch(series)) return null;
   final match = await aniList.searchMedia(series);
   if (match == null) return null;
   Future<Uint8List?> get(String? url, int maxBytes) async {
@@ -67,6 +71,31 @@ Future<ArtBytes?> aniListArt(AniListClient aniList, String name,
   return (poster: poster, banner: banner);
 }
 
+/// A web video's thumbnail at [url] as both cover and banner (the same
+/// bytes, so the same hash: what tells clients it is a thumbnail, see
+/// `NowPlaying.thumbnail`); shrunk to a JPEG under the cover cap when
+/// larger; null when it cannot be had.
+Future<ArtBytes?> thumbnailArt(Uri url,
+    {Future<Uint8List?> Function(Uri url, Map<String, String> headers, int maxBytes) fetch = fetchImage}) async {
+  var bytes = await fetch(url, const {}, 8 * 1024 * 1024);
+  if (bytes != null && bytes.length > RelayConstants.maxPosterBytes) bytes = await _shrinkApart(bytes);
+  return bytes == null ? null : (poster: bytes, banner: bytes);
+}
+
+// Its own function, so the isolate's closure holds nothing but [raw].
+Future<Uint8List?> _shrinkApart(Uint8List raw) => Isolate.run<Uint8List?>(() => _shrinkThumbnail(raw));
+
+Uint8List? _shrinkThumbnail(Uint8List raw) {
+  final decoded = img.decodeImage(raw);
+  if (decoded == null) return null;
+  for (final width in const [1280, 960, 640]) {
+    final small = decoded.width > width ? img.copyResize(decoded, width: width, interpolation: img.Interpolation.average) : decoded;
+    final jpg = img.encodeJpg(small, quality: 82);
+    if (jpg.length <= RelayConstants.maxPosterBytes) return jpg;
+  }
+  return null;
+}
+
 /// GET [url]: the bytes when 200, at most [maxBytes] and a known image
 /// type (see `avatarImageType`); else null.
 Future<Uint8List?> fetchImage(Uri url, Map<String, String> headers, int maxBytes) async {

apps/desktop/lib/src/session/now_playing.dart

@@ -9,7 +9,11 @@ class NowPlaying {
   /// Portrait cover (2:3) and wide banner; '' when none.
   final String posterHash;
   final String bannerHash;
-  const NowPlaying({required this.title, this.episode, this.posterHash = '', this.bannerHash = ''});
+  /// A web video: its art is its thumbnail (the same picture as cover and
+  /// banner, or none yet), shown wide, under the video's own name.
+  final bool thumbnail;
+  const NowPlaying(
+      {required this.title, this.episode, this.posterHash = '', this.bannerHash = '', this.thumbnail = false});
 
   @override
   bool operator ==(Object other) =>
@@ -17,8 +21,9 @@ class NowPlaying {
       other.title == title &&
       other.episode == episode &&
       other.posterHash == posterHash &&
-      other.bannerHash == bannerHash;
+      other.bannerHash == bannerHash &&
+      other.thumbnail == thumbnail;
 
   @override
-  int get hashCode => Object.hash(title, episode, posterHash, bannerHash);
+  int get hashCode => Object.hash(title, episode, posterHash, bannerHash, thumbnail);
 }

apps/desktop/lib/src/session/now_playing_info.dart

@@ -1,3 +1,5 @@
+import 'package:sync_relay_core/core.dart' show hasMediaExtension;
+
 import '../files/name_parser.dart';
 import '../jellyfin/session_media.dart';
 import 'now_playing.dart';
@@ -17,12 +19,37 @@ NowPlaying? nowPlayingOf(Map<String, Object?>? media) {
   final poster = art['poster'] is String ? art['poster'] as String : '';
   final banner = art['banner'] is String ? art['banner'] as String : '';
   final ref = refOfStateMedia(media);
+  // A web video: its name as is, no episode guessing, its thumbnail as
+  // the art. Told by the art once it is up (the same picture as cover and
+  // banner), before that by the media itself, so it never changes layout.
+  final web = poster.isNotEmpty || banner.isNotEmpty ? poster == banner : ref == null && isWebVideo(media);
+  if (web) {
+    return NowPlaying(title: name, posterHash: poster, bannerHash: banner, thumbnail: true);
+  }
   final (title, episode) = ref != null
       ? jellyfinTitle(ref.title.isNotEmpty ? ref.title : name, ref.subtitle)
       : fileTitle(name);
   return NowPlaying(title: title, episode: episode, posterHash: poster, bannerHash: banner);
 }
 
+/// [media] (`state.media`, not Jellyfin) is a web page's video, whose art
+/// will be its thumbnail: a shared http(s) link that is no media file (the
+/// everyone-opens-it mode), or a relayed one (passed on by a member or
+/// fetched by the server: the URL stays private) named by the page's title,
+/// not a file name. A relayed file keeps its file name's extension.
+bool isWebVideo(Map<String, Object?> media) {
+  final url = media['url'];
+  if (url is String && url.isNotEmpty) {
+    final uri = Uri.tryParse(url);
+    return uri != null &&
+        (uri.isScheme('http') || uri.isScheme('https')) &&
+        uri.host.isNotEmpty &&
+        !hasMediaExtension(uri);
+  }
+  final name = media['name'] is String ? media['name'] as String : '';
+  return media['relay'] is Map && name.isNotEmpty && !_ext.hasMatch(name);
+}
+
 /// Jellyfin: [name] is the item's, [subtitle] "Series · S1E6" (or
 /// "Series - S01E02") for episodes, the year for movies. Episodes give the
 /// series and "S1 E6 · Name"; anything else the name alone.

apps/desktop/lib/src/session/switch_trace.dart

@@ -0,0 +1,55 @@
+import 'dart:io';
+
+import 'package:flutter/foundation.dart';
+
+/// Timings of one media change on this client, from the `state` naming
+/// the new media to the server playing it (see ARCHITECTURE.md "Getting
+/// ready"). Printed when [enabled] (env `SYNC_RELAY_TRACE_SWITCH=1`);
+/// marks are always kept for the last few media, tests read them.
+class SwitchTrace {
+  /// Phases, in the order they usually happen.
+  static const state = 'state';
+  static const resolved = 'resolved';
+  static const open = 'open';
+  /// A fresh player is up for it (no preload held it).
+  static const player = 'player';
+  static const opened = 'opened';
+  static const preloaded = 'preloaded';
+  static const buffered = 'buffered';
+  static const playing = 'playing';
+
+  static bool enabled = (Platform.environment['SYNC_RELAY_TRACE_SWITCH'] ?? '').isNotEmpty;
+
+  final String who;
+  SwitchTrace([this.who = '']);
+
+  final Map<int, Map<String, int>> _marks = {};
+  final Map<int, Stopwatch> _clocks = {};
+
+  /// Milliseconds from [state] to each phase of media [mediaId].
+  Map<String, int> of(int mediaId) => Map.unmodifiable(_marks[mediaId] ?? const {});
+
+  /// Starts the clock for [mediaId] (its first `state`).
+  void start(int mediaId) {
+    if (_clocks.containsKey(mediaId)) return;
+    _clocks[mediaId] = Stopwatch()..start();
+    _marks[mediaId] = {state: 0};
+    while (_clocks.length > 4) {
+      final oldest = _clocks.keys.first;
+      _clocks.remove(oldest);
+      _marks.remove(oldest);
+    }
+  }
+
+  /// Records [phase] once for [mediaId]; [playing] ends the trace.
+  void mark(int mediaId, String phase) {
+    final clock = _clocks[mediaId];
+    final marks = _marks[mediaId];
+    if (clock == null || marks == null || marks.containsKey(phase)) return;
+    marks[phase] = clock.elapsedMilliseconds;
+    if (phase == playing && enabled) {
+      debugPrint('switch${who.isEmpty ? '' : ' $who'} m$mediaId: '
+          '${[for (final e in marks.entries) '${e.key} +${e.value} ms'].join(', ')}');
+    }
+  }
+}

apps/desktop/lib/src/sfx/sfx.dart

@@ -1,20 +1,25 @@
+/// The app's sounds. Only events that carry news get one: no sound for
+/// what the video itself makes obvious (start, pause, end, seeks).
 enum SfxKind {
+  /// Someone readies up; pitch climbs with [SfxCue.readyIndex].
   ready,
   unready,
+  /// Someone marks everyone ready.
   forceReady,
-  forceUnready,
-  forcePlay,
-  forceHold,
-  kick,
   join,
   leave,
-  stale,
+  /// Someone sat you out (played by the session, not from a feed action).
+  kick,
+  /// A new video or episode is put up.
   swap,
-  seek,
-  pause,
-  resume,
   chat,
+  /// Idle warning: auto-unready soon.
   warn,
+  /// The connection to the server dropped / came back.
+  lost,
+  back,
+  /// Someone pokes you for attention; plays only on your end.
+  nudge,
 }
 
 class SfxCue {
@@ -23,42 +28,16 @@ class SfxCue {
   const SfxCue(this.kind, {this.readyIndex = 0});
 }
 
-SfxKind? sfxForFeedAction(String action) {
-  switch (action) {
-    case 'ready':
-      return SfxKind.ready;
-    case 'unready':
-      return SfxKind.unready;
-    case 'force-ready':
-      return SfxKind.forceReady;
-    case 'force-unready':
-      return SfxKind.forceUnready;
-    case 'force-play':
-      return SfxKind.forcePlay;
-    case 'force-hold':
-      return SfxKind.forceHold;
-    case 'kick':
-      return SfxKind.kick;
-    case 'join':
-      return SfxKind.join;
-    case 'leave':
-      return SfxKind.leave;
-    case 'stale':
-      return SfxKind.stale;
-    case 'swap':
-      return SfxKind.swap;
-    case 'seek':
-      return SfxKind.seek;
-    case 'pause':
-      return SfxKind.pause;
-    case 'resume':
-      return SfxKind.resume;
-    case 'chat':
-      return SfxKind.chat;
-    default:
-      return null;
-  }
-}
+SfxKind? sfxForFeedAction(String action) => switch (action) {
+      'ready' => SfxKind.ready,
+      'unready' => SfxKind.unready,
+      'force-ready' => SfxKind.forceReady,
+      'join' => SfxKind.join,
+      'leave' => SfxKind.leave,
+      'swap' => SfxKind.swap,
+      'chat' => SfxKind.chat,
+      _ => null,
+    };
 
 abstract class SfxService {
   Future<void> play(SfxCue cue);

apps/desktop/lib/src/sfx/sound_bank.dart

@@ -0,0 +1,268 @@
+import 'sfx.dart';
+import 'synth.dart';
+
+// The app's sounds come in presets; each action can take its sound from any
+// of them. Every preset is quiet, short and on D, so sounds from different
+// presets still agree when they overlap.
+//  - Cosmic: star bells, stardust, bubbles, soft pads, a space tail.
+//  - Abyss: deep space and its dread. Far beacons, nebula washes, slow
+//    beating clusters and tritone sags, on D phrygian, with a vast tail.
+//  - Wood & glass: plucked strings, glass bells, wood knocks, a short room.
+
+enum SoundPreset { cosmic, abyss, woodAndGlass }
+
+/// Shown in Settings: name and feel.
+const presetInfo = {
+  SoundPreset.cosmic: ('Cosmic', 'Star bells, stardust and a soft space tail'),
+  SoundPreset.abyss: ('Abyss', 'Deep space: far beacons, nebula, a vast dark tail'),
+  SoundPreset.woodAndGlass: ('Wood & glass', 'Plucked strings, glass bells and wood, close and dry'),
+};
+
+/// The preset used when nothing else is chosen.
+const defaultPreset = SoundPreset.abyss;
+
+const _d3 = -19, _ab3 = -13;
+const _d4 = -7, _eb4 = -6, _ab4 = -1, _a4 = 0, _b4 = 2;
+const _d5 = 5, _eb5 = 6, _e5 = 7, _f5 = 8, _fs5 = 9, _g5 = 10, _a5 = 12, _bb5 = 13, _b5 = 14;
+const _c6 = 15, _cs6 = 16, _d6 = 17, _e6 = 19, _f6 = 20, _fs6 = 21, _g6 = 22, _a6 = 24, _b6 = 26;
+
+double _p(int s) => semi(s);
+
+/// The ready sound's answer climbs with each person ready.
+const _cosmicLadder = [_a5, _b5, _d6, _e6, _fs6, _a6];
+const _abyssLadder = [_f5, _g5, _a5, _c6, _d6, _f6];
+const _woodLadder = [_g5, _a5, _b5, _d6, _e6, _g6];
+
+SoundSpec readySound(int readyIndex, {SoundPreset preset = defaultPreset}) =>
+    soundFor(SfxKind.ready, readyIndex: readyIndex, preset: preset);
+
+SoundSpec soundFor(SfxKind kind, {int readyIndex = 1, SoundPreset preset = defaultPreset}) {
+  final i = (readyIndex - 1).clamp(0, 5);
+  return switch (preset) {
+    SoundPreset.cosmic => _cosmic(kind, i),
+    SoundPreset.abyss => _abyss(kind, i),
+    SoundPreset.woodAndGlass => _wood(kind, i),
+  };
+}
+
+SoundSpec _cosmic(SfxKind kind, int i) => switch (kind) {
+      SfxKind.ready => SoundSpec([
+          Note(0, _p(_d4), 1.0, voice: Voice.pad, gain: 0.3),
+          Note(0, _p(_d5), 1.2, voice: Voice.star, gain: 0.8, bright: 0.4),
+          Note(0.09, _p(_cosmicLadder[i]), 1.5, voice: Voice.star, bright: 0.5),
+        ], peakDb: -17, room: 0.3),
+      // The same bells, dimmed and stepping down.
+      SfxKind.unready => SoundSpec([
+          Note(0, _p(_fs5), 0.6, voice: Voice.star, gain: 0.8, bright: 0.15),
+          Note(0.1, _p(_d5), 0.8, voice: Voice.star, bright: 0.1),
+        ], cutoff: 3500, peakDb: -20, room: 0.25),
+      // Just the bell, left hanging in space: playback is the rest of the cue.
+      SfxKind.forceReady => SoundSpec([
+          Note(0, _p(_d6), 1.8, voice: Voice.star, bright: 0.7),
+        ], cutoff: 7000, peakDb: -18, room: 0.35, tail: 1.6),
+      // A star arriving: dust rising into a bell.
+      SfxKind.join => SoundSpec([
+          Note(0, _p(_d6), 1.0, voice: Voice.dust, to: _p(_a6), gain: 0.5),
+          Note(0.15, _p(_a5), 1.4, voice: Voice.star, bright: 0.35, gain: 0.6),
+        ], cutoff: 7000, peakDb: -19, room: 0.3),
+      // Dust drifting down, a low bell going out.
+      SfxKind.leave => SoundSpec([
+          Note(0, _p(_a6), 0.9, voice: Voice.dust, to: _p(_d6), gain: 0.5),
+          Note(0.1, _p(_d5), 1.3, voice: Voice.star, bright: 0.2, gain: 0.5),
+        ], cutoff: 5000, peakDb: -22, room: 0.3),
+      // Falling into the dark: a deep tone sinking an octave under a sagging pad.
+      SfxKind.kick => SoundSpec([
+          Note(0, _p(_d4), 1.0, voice: Voice.sub, to: _p(_d3)),
+          Note(0, _p(_a4), 0.9, voice: Voice.pad, to: _p(_d4), gain: 0.4),
+        ], cutoff: 3000, peakDb: -19, room: 0.25),
+      // Something new opens up: a rush of air, then a wide chord blooms.
+      SfxKind.swap => SoundSpec([
+          Note(0, 300, 0.6, voice: Voice.slide, to: 2400, gain: 0.35),
+          Note(0.35, _p(_d4), 1.4, voice: Voice.pad, gain: 0.5, bright: 0.3),
+          Note(0.35, _p(_a4), 1.4, voice: Voice.pad, gain: 0.5, bright: 0.3),
+          Note(0.35, _p(_e5), 1.4, voice: Voice.pad, gain: 0.4, bright: 0.3),
+          Note(0.38, _p(_fs6), 1.2, voice: Voice.star, bright: 0.3, gain: 0.3),
+        ], peakDb: -18, room: 0.3),
+      // Two bubbles rising: bloop-bloop, the second higher.
+      SfxKind.chat => SoundSpec([
+          Note(0, _p(_a5), 0.18, voice: Voice.drop, gain: 0.8),
+          Note(0.08, _p(_e6), 0.22, voice: Voice.drop),
+        ], peakDb: -19, room: 0.15, tail: 1.0),
+      // Something huge drifting past: a slow, deep swell.
+      SfxKind.warn => SoundSpec([
+          Note(0, _p(_d4), 2.0, voice: Voice.pad),
+          Note(0, _p(_a4), 2.0, voice: Voice.pad, gain: 0.5),
+          Note(0.3, _p(_d3), 1.7, voice: Voice.sub, gain: 0.4),
+        ], cutoff: 3000, peakDb: -20, room: 0.2, tail: 1.0),
+      // The signal fading: a chord sagging down and dimming.
+      SfxKind.lost => SoundSpec([
+          Note(0, _p(_a4), 1.2, voice: Voice.pad, to: _p(_d4), gain: 0.7),
+          Note(0, _p(_e5), 1.2, voice: Voice.pad, to: _p(_a4), gain: 0.4),
+        ], cutoff: 2500, peakDb: -19, room: 0.3, tail: 1.2),
+      // Re-acquired: a bell gliding up into tune, landing with dust.
+      SfxKind.back => SoundSpec([
+          Note(0, _p(_a4), 0.6, voice: Voice.star, to: _p(_d5), bright: 0.3, gain: 0.5),
+          Note(0.22, _p(_a5), 1.2, voice: Voice.star, bright: 0.5),
+          Note(0.25, _p(_d6), 0.6, voice: Voice.dust, to: _p(_a6), gain: 0.3),
+        ], peakDb: -18, room: 0.25),
+      // A poke: two quick bright bubbles flicking up, a glint on the second.
+      // High and dry so it cuts through a video and stays a patter when spammed.
+      SfxKind.nudge => SoundSpec([
+          Note(0, _p(_d6), 0.12, voice: Voice.drop, to: _p(_fs6), gain: 0.8),
+          Note(0.09, _p(_a6), 0.16, voice: Voice.drop),
+          Note(0.09, _p(_cs6) * 2, 0.3, voice: Voice.star, bright: 0.6, gain: 0.2),
+        ], cutoff: 7000, peakDb: -18, room: 0.05, tail: 0.6),
+    };
+
+SoundSpec _abyss(SfxKind kind, int i) => switch (kind) {
+      // A beacon pinging far out, the void humming under it.
+      SfxKind.ready => SoundSpec([
+          Note(0, _p(_d3), 1.2, voice: Voice.pad, gain: 0.35),
+          Note(0, _p(_d5), 1.4, voice: Voice.star, gain: 0.8, bright: 0.25),
+          Note(0.12, _p(_abyssLadder[i]), 1.6, voice: Voice.star, bright: 0.3),
+        ], cutoff: 5000, peakDb: -18, room: 0.4, tail: 1.8),
+      // The beacon answering itself a tritone down, dimmer.
+      SfxKind.unready => SoundSpec([
+          Note(0, _p(_a4), 0.7, voice: Voice.star, gain: 0.8, bright: 0.1),
+          Note(0.12, _p(_eb4), 0.9, voice: Voice.star, bright: 0.1),
+        ], cutoff: 2500, peakDb: -21, room: 0.35, tail: 1.6),
+      // One bell, huge and very far away.
+      SfxKind.forceReady => SoundSpec([
+          Note(0, _p(_d5), 1.7, voice: Voice.star, bright: 0.5),
+        ], cutoff: 5000, peakDb: -18, room: 0.45, tail: 1.8),
+      // Something emerging from the nebula: a dark wash brightening into a bell.
+      SfxKind.join => SoundSpec([
+          Note(0, 150, 1.2, voice: Voice.slide, to: 900, gain: 0.4),
+          Note(0.05, _p(_d4), 1.2, voice: Voice.pad, gain: 0.3),
+          Note(0.3, _p(_a5), 1.3, voice: Voice.star, bright: 0.3, gain: 0.5),
+        ], cutoff: 4500, peakDb: -19, room: 0.4, tail: 1.6),
+      // Swallowed back into it: the wash darkening over a fading bell.
+      SfxKind.leave => SoundSpec([
+          Note(0, 900, 1.1, voice: Voice.slide, to: 150, gain: 0.4),
+          Note(0.1, _p(_d5), 1.2, voice: Voice.star, bright: 0.15, gain: 0.4),
+        ], cutoff: 3500, peakDb: -22, room: 0.4, tail: 1.6),
+      // Pulled under: a deep fall with a tritone sagging over it.
+      SfxKind.kick => SoundSpec([
+          Note(0, _p(_d4), 1.3, voice: Voice.sub, to: _p(_d3)),
+          Note(0, _p(_ab4), 1.2, voice: Voice.pad, to: _p(_d4), gain: 0.35),
+        ], cutoff: 2000, peakDb: -19, room: 0.35, tail: 1.6),
+      // A door into the dark: low air, then an unresolved chord opens.
+      SfxKind.swap => SoundSpec([
+          Note(0, 120, 0.8, voice: Voice.slide, to: 1200, gain: 0.35),
+          Note(0.45, _p(_d4), 1.3, voice: Voice.pad, gain: 0.5, bright: 0.2),
+          Note(0.45, _p(_a4), 1.3, voice: Voice.pad, gain: 0.45, bright: 0.2),
+          Note(0.45, _p(_eb5), 1.3, voice: Voice.pad, gain: 0.3, bright: 0.2),
+          Note(0.5, _p(_bb5), 1.1, voice: Voice.star, bright: 0.2, gain: 0.25),
+        ], cutoff: 4000, peakDb: -19, room: 0.35, tail: 1.4),
+      // Bubbles rising from deep water.
+      SfxKind.chat => SoundSpec([
+          Note(0, _p(_d5), 0.25, voice: Voice.drop, gain: 0.8),
+          Note(0.1, _p(_a5), 0.3, voice: Voice.drop),
+        ], cutoff: 4500, peakDb: -19, room: 0.3, tail: 1.4),
+      // Something vast drawing near: a slow swell of two notes rubbing.
+      SfxKind.warn => SoundSpec([
+          Note(0, _p(_d4), 2.0, voice: Voice.pad),
+          Note(0, _p(_eb4), 2.0, voice: Voice.pad, gain: 0.35),
+          Note(0.3, _p(_d3), 1.7, voice: Voice.sub, gain: 0.45),
+        ], cutoff: 2200, peakDb: -20, room: 0.25, tail: 1.0),
+      // The signal drowning: a chord sagging by a tritone into static.
+      SfxKind.lost => SoundSpec([
+          Note(0, _p(_a4), 1.3, voice: Voice.pad, to: _p(_eb4), gain: 0.7),
+          Note(0, _p(_d4), 1.3, voice: Voice.pad, to: _p(_ab3), gain: 0.5),
+          Note(0.2, 600, 1.0, voice: Voice.slide, to: 200, gain: 0.2),
+        ], cutoff: 2000, peakDb: -19, room: 0.35, tail: 1.4),
+      // Found again: a bell climbing out of the tritone into tune.
+      SfxKind.back => SoundSpec([
+          Note(0, _p(_ab4), 0.6, voice: Voice.star, to: _p(_d5), bright: 0.25, gain: 0.5),
+          Note(0.25, _p(_a5), 1.3, voice: Voice.star, bright: 0.4),
+          Note(0.28, _p(_d5), 0.6, voice: Voice.dust, to: _p(_a5), gain: 0.25),
+        ], cutoff: 5000, peakDb: -18, room: 0.35, tail: 1.6),
+      // A poke from the dark: two quick bubbles flicking up, a pale glint.
+      // Still high and fairly dry so it cuts through a video when spammed.
+      SfxKind.nudge => SoundSpec([
+          Note(0, _p(_a5), 0.13, voice: Voice.drop, to: _p(_c6), gain: 0.8),
+          Note(0.1, _p(_d6), 0.18, voice: Voice.drop),
+          Note(0.1, _p(_a6), 0.35, voice: Voice.star, bright: 0.5, gain: 0.2),
+        ], cutoff: 6000, peakDb: -18, room: 0.1, tail: 1.0),
+    };
+
+SoundSpec _wood(SfxKind kind, int i) => switch (kind) {
+      SfxKind.ready => SoundSpec([
+          Note(0, _p(_d5), 0.9, gain: 0.75, bright: 0.55),
+          Note(0.085, _p(_woodLadder[i]), 1.1, bright: 0.65),
+        ], peakDb: -17, room: 0.14, tail: 0.5),
+      // The same strings, muted and stepping down.
+      SfxKind.unready => SoundSpec([
+          Note(0, _p(_a5), 0.35, gain: 0.8, bright: 0.2),
+          Note(0.09, _p(_g5), 0.45, bright: 0.15),
+        ], cutoff: 3800, peakDb: -20, room: 0.1, tail: 0.5),
+      // Just the bell: playback starting is the rest of the cue.
+      SfxKind.forceReady => SoundSpec([
+          Note(0, _p(_d6) * 2, 1.6, voice: Voice.chime),
+        ], cutoff: 7000, peakDb: -18, room: 0.18, tail: 0.5),
+      // Wind through glass: three uneven tinkles.
+      SfxKind.join => SoundSpec([
+          Note(0, _p(_a6), 1.3, voice: Voice.chime, gain: 0.8),
+          Note(0.11, _p(_d6) * 2, 1.2, voice: Voice.chime, gain: 0.55),
+          Note(0.26, _p(_e6) * 2, 1.4, voice: Voice.chime, gain: 0.45),
+        ], cutoff: 7000, peakDb: -19, room: 0.18, tail: 0.5),
+      // The wind settling: two softer, lower tinkles.
+      SfxKind.leave => SoundSpec([
+          Note(0, _p(_b6), 1.0, voice: Voice.chime, gain: 0.6),
+          Note(0.17, _p(_e6), 1.3, voice: Voice.chime, gain: 0.5),
+        ], cutoff: 5000, peakDb: -22, room: 0.18, tail: 0.5),
+      // Two hardwood clacks, then a low muted string.
+      SfxKind.kick => SoundSpec([
+          Note(0, 1900, 0.09, voice: Voice.clack),
+          Note(0.16, 1750, 0.11, voice: Voice.clack, gain: 0.9),
+          Note(0.3, _p(_d4), 0.7, bright: 0.15, gain: 0.7),
+        ], cutoff: 5000, peakDb: -19, room: 0.12, tail: 0.5),
+      // The door slides open on something new: air, then a fifth.
+      SfxKind.swap => SoundSpec([
+          Note(0, 500, 0.42, voice: Voice.slide, to: 1700, gain: 0.5),
+          Note(0.33, _p(_d5), 1.1, bright: 0.6, gain: 0.8),
+          Note(0.36, _p(_a5), 1.1, bright: 0.6, gain: 0.7),
+        ], peakDb: -18, tail: 0.5),
+      // A hollow wooden tok-tok, the second higher.
+      SfxKind.chat => SoundSpec([
+          Note(0, _p(_g5), 0.13, voice: Voice.bamboo, gain: 0.85),
+          Note(0.075, _p(_d6), 0.16, voice: Voice.bamboo),
+        ], cutoff: 5500, peakDb: -19, room: 0.1, tail: 0.5),
+      // A bowl: one soft strike that hums.
+      SfxKind.warn => SoundSpec([
+          Note(0, _p(_d5), 2.6, voice: Voice.rin),
+        ], cutoff: 4500, peakDb: -20, room: 0.1, tail: 0.5),
+      // A string going slack: plucked, its pitch sagging away.
+      SfxKind.lost => SoundSpec([
+          Note(0, _p(_a5), 1.1, to: _p(_d5), bright: 0.4),
+          Note(0.05, _p(_d5), 1.0, to: _p(_a4), bright: 0.3, gain: 0.6),
+        ], cutoff: 3500, peakDb: -19, tail: 0.5),
+      // Re-tuned: a quick bend up that lands, and a tinkle.
+      SfxKind.back => SoundSpec([
+          Note(0, _p(_b4), 0.9, to: _p(_d5), bright: 0.5),
+          Note(0.2, _p(_a5), 1.0, bright: 0.6, gain: 0.7),
+          Note(0.3, _p(_d6) * 2, 1.0, voice: Voice.chime, gain: 0.2),
+        ], peakDb: -18, tail: 0.5),
+          // Two quick wooden taps, the second flicking up, with a glint.
+      SfxKind.nudge => SoundSpec([
+          Note(0, _p(_a5), 0.12, voice: Voice.bamboo, gain: 0.8),
+          Note(0.09, _p(_e6), 0.16, voice: Voice.bamboo),
+          Note(0.09, _p(_b6), 0.35, voice: Voice.chime, gain: 0.3),
+        ], cutoff: 6500, peakDb: -18, room: 0.04, tail: 0.5),
+    };
+
+/// Shown in Settings → Notifications & sounds: name and when it plays.
+const soundInfo = {
+  SfxKind.ready: ('Ready', 'Someone presses Space; climbs with each ready person'),
+  SfxKind.unready: ('Not ready', 'Someone takes their ready back'),
+  SfxKind.forceReady: ('Everyone ready', 'Someone marks everyone ready'),
+  SfxKind.join: ('Joined', 'Someone joins the server'),
+  SfxKind.leave: ('Left', 'Someone leaves'),
+  SfxKind.kick: ('Sat out', 'Someone sits you out'),
+  SfxKind.swap: ('New video', 'A different video or episode is put up'),
+  SfxKind.chat: ('Message', 'A chat message from someone else'),
+  SfxKind.warn: ('Idle warning', 'Auto-unready soon unless you press Space'),
+  SfxKind.lost: ('Connection lost', 'The server stopped answering; reconnecting'),
+  SfxKind.back: ('Reconnected', 'Back in the server after a drop'),
+  SfxKind.nudge: ('Nudge', 'Someone nudges you; always plays (volume still applies)'),
+};

apps/desktop/lib/src/sfx/synth.dart

@@ -0,0 +1,473 @@
+import 'dart:math' as math;
+import 'dart:typed_data';
+
+// A tiny offline synthesizer for UI sounds. The current palette is
+// spacious: FM star bells, bubble drops, slow pads, a sub that falls away,
+// stardust and a long dark space tail. Older voices (plucked string, glass
+// and bowl bells, wood) stay available. Renders to 16-bit mono WAV bytes.
+// Pure Dart.
+
+const sampleRate = 44100;
+
+enum Voice {
+  /// Plucked string; [Note.to] bends it (the delay line stretches).
+  koto,
+  /// Small glass bell: inharmonic partials, a slow shimmer.
+  chime,
+  /// Singing bowl: a soft strike and a long beating hum.
+  rin,
+  /// Hollow bamboo knock, pitched.
+  bamboo,
+  /// Two hardwood blocks struck together.
+  clack,
+  /// Breathy air sweeping up (a sliding door); [Note.hz]→[Note.to] is the
+  /// sweep of its band.
+  slide,
+  /// FM bell: strikes glassy, settles to a pure hanging tone; [Note.bright]
+  /// scales the strike, [Note.to] glides it.
+  star,
+  /// A bubble: the pitch rises into the note fast; [Note.to] flicks it on.
+  drop,
+  /// Slow detuned swell (in over a third of its length, then out);
+  /// [Note.bright] adds overtones, [Note.to] glides it.
+  pad,
+  /// Deep round tone that falls from [Note.hz] to [Note.to].
+  sub,
+  /// A scatter of tiny pings on the scale above [Note.hz], drifting
+  /// towards [Note.to].
+  dust,
+}
+
+class Note {
+  final double at;
+  final double hz;
+  final double? to;
+  /// Length (s) to about -40 dB.
+  final double len;
+  final double gain;
+  final Voice voice;
+  /// Koto only: 0 = dark/muted pluck, 1 = bright.
+  final double bright;
+  const Note(this.at, this.hz, this.len,
+      {this.to, this.gain = 1, this.voice = Voice.koto, this.bright = 0.6});
+}
+
+class SoundSpec {
+  final List<Note> notes;
+  /// Gentle low-pass cutoff (Hz) over the mix.
+  final double cutoff;
+  /// Peak level after normalising, dBFS (quiet by design).
+  final double peakDb;
+  /// Space tail mix (0..1).
+  final double room;
+  /// Space tail decay to -60 dB (s); the sound keeps about half of it.
+  final double tail;
+  const SoundSpec(this.notes,
+      {this.cutoff = 6000, this.peakDb = -17, this.room = 0.14, this.tail = 1.4});
+
+  double get length =>
+      notes.fold<double>(0, (m, n) => math.max(m, n.at + n.len)) + (room > 0 ? tail * 0.55 : 0.02);
+}
+
+/// Semitones from A4 (440 Hz) to Hz.
+double semi(num n) => 440 * math.pow(2, n / 12).toDouble();
+
+Float64List render(SoundSpec spec, {int seed = 7}) {
+  final total = (spec.length * sampleRate).ceil();
+  final out = Float64List(total);
+  final rnd = math.Random(seed);
+  for (final n in spec.notes) {
+    final start = (n.at * sampleRate).round();
+    if (start >= total) continue;
+    final s = switch (n.voice) {
+      Voice.koto => _koto(n, rnd),
+      Voice.chime => _bell(n, const [(1.0, 1.0, 1.0), (2.76, 0.45, 1.9), (5.40, 0.2, 3.2), (8.93, 0.08, 4.5)], 1.6, 0.003),
+      Voice.rin => _bell(n, const [(1.0, 1.0, 1.0), (2.71, 0.35, 1.5), (5.15, 0.12, 2.4)], 2.4, 0.012),
+      Voice.bamboo => _bamboo(n, rnd),
+      Voice.clack => _clack(n, rnd),
+      Voice.slide => _slide(n, rnd),
+      Voice.star => _star(n),
+      Voice.drop => _drop(n),
+      Voice.pad => _pad(n, rnd),
+      Voice.sub => _sub(n),
+      Voice.dust => _dust(n, rnd),
+    };
+    for (var i = 0; i < s.length && start + i < total; i++) {
+      out[start + i] += n.gain * s[i];
+    }
+  }
+  _lowpass(out, spec.cutoff);
+  if (spec.room > 0) _space(out, spec.room, spec.tail);
+  // 1 ms in, 10 ms out: no clicks at either end.
+  final fadeIn = (0.001 * sampleRate).round();
+  for (var i = 0; i < fadeIn && i < total; i++) {
+    out[i] *= i / fadeIn;
+  }
+  final fade = (0.01 * sampleRate).round();
+  for (var i = 0; i < fade && i < total; i++) {
+    out[total - 1 - i] *= i / fade;
+  }
+  var peak = 0.0;
+  for (final v in out) {
+    peak = math.max(peak, v.abs());
+  }
+  if (peak > 0) {
+    final g = math.pow(10, spec.peakDb / 20) / peak;
+    for (var i = 0; i < total; i++) {
+      out[i] *= g;
+    }
+  }
+  return out;
+}
+
+int _n(double secs) => (secs * sampleRate).round();
+double _smooth(double t) => t * t * (3 - 2 * t);
+
+/// Karplus-Strong with a fractional, movable delay: a noise burst in a
+/// loop that loses a little of its highs each pass.
+Float64List _koto(Note n, math.Random rnd) {
+  final len = _n(n.len);
+  final out = Float64List(len);
+  final maxPeriod = sampleRate / math.min(n.hz, n.to ?? n.hz) + 4;
+  final buf = Float64List(maxPeriod.ceil() + 4);
+  final size = buf.length;
+  // Excitation: noise, smoothed more for a darker pluck.
+  final period0 = sampleRate / n.hz;
+  var prev = 0.0;
+  final smooth = 1 - (0.25 + 0.7 * n.bright);
+  for (var i = 0; i < period0.ceil(); i++) {
+    final x = rnd.nextDouble() * 2 - 1;
+    prev = smooth * prev + (1 - smooth) * x;
+    buf[i % size] = prev;
+  }
+  // Loop gain so the note reaches -40 dB at len.
+  final loss = math.pow(0.01, 1 / (n.len * n.hz)).toDouble();
+  var w = period0.ceil();
+  var last = 0.0;
+  for (var i = 0; i < len; i++) {
+    final t = i / len;
+    final hz = n.to == null ? n.hz : n.hz * math.pow(n.to! / n.hz, _smooth(math.min(1, t * 1.6)));
+    // The two-point average below delays half a sample: take it off.
+    final period = sampleRate / hz - 0.5;
+    final r = w - period;
+    final ri = r.floor();
+    final f = r - ri;
+    final a = buf[(ri % size + size) % size];
+    final b = buf[((ri + 1) % size + size) % size];
+    final y = a + (b - a) * f;
+    // Two-point average = the string's damping; the 0.5 mix keeps it bright.
+    final v = loss * (0.5 * y + 0.5 * last);
+    last = y;
+    buf[w % size] = v;
+    w++;
+    // A 3 ms attack takes the click off the pluck.
+    out[i] = v * (i < 132 ? i / 132 : 1);
+  }
+  return out;
+}
+
+/// Inharmonic partials (ratio, amplitude, decay multiplier), each doubled
+/// with a slightly detuned twin so the tail shimmers.
+Float64List _bell(Note n, List<(double, double, double)> partials, double beatHz, double attackSecs) {
+  final len = _n(n.len);
+  final out = Float64List(len);
+  final k = math.log(100) / len;
+  final attack = _n(attackSecs);
+  for (final (ratio, amp, decay) in partials) {
+    final f1 = n.hz * ratio, f2 = f1 + beatHz * ratio;
+    for (var i = 0; i < len; i++) {
+      final env = math.exp(-k * decay * i) * (i < attack ? _smooth(i / attack) : 1);
+      final ph = 2 * math.pi * i / sampleRate;
+      out[i] += amp * env * 0.5 * (math.sin(ph * f1) + math.sin(ph * f2));
+    }
+  }
+  return out;
+}
+
+/// A hollow tube: a pitched thump that drops into its note, an overtone
+/// that dies fast, and a short click of air.
+Float64List _bamboo(Note n, math.Random rnd) {
+  final len = _n(n.len);
+  final out = Float64List(len);
+  final k = math.log(100) / len;
+  var ph = 0.0, ph2 = 0.0;
+  for (var i = 0; i < len; i++) {
+    final drop = math.exp(-i / _n(0.012));
+    final hz = n.hz * (1 + 0.5 * drop);
+    ph += 2 * math.pi * hz / sampleRate;
+    ph2 += 2 * math.pi * hz * 2.31 / sampleRate;
+    out[i] = math.exp(-k * i) * (math.sin(ph) + 0.35 * math.sin(ph2) * math.exp(-k * 3 * i));
+  }
+  final click = _bandNoise(_n(0.006), n.hz * 3, 2.0, rnd);
+  for (var i = 0; i < click.length && i < len; i++) {
+    out[i] += 0.5 * click[i] * (1 - i / click.length);
+  }
+  return out;
+}
+
+/// Hardwood: two resonances excited by a very short noise burst.
+Float64List _clack(Note n, math.Random rnd) {
+  final len = _n(n.len);
+  final out = Float64List(len);
+  final burst = Float64List(len);
+  for (var i = 0; i < _n(0.002) && i < len; i++) {
+    burst[i] = rnd.nextDouble() * 2 - 1;
+  }
+  for (final (f, q, g) in [(n.hz, 18.0, 1.0), (n.hz * 1.47, 14.0, 0.6), (n.hz * 2.6, 10.0, 0.25)]) {
+    final r = _biquadBand(burst, f, q);
+    for (var i = 0; i < len; i++) {
+      out[i] += g * r[i];
+    }
+  }
+  final k = math.log(100) / len;
+  for (var i = 0; i < len; i++) {
+    out[i] *= math.exp(-k * i);
+  }
+  return out;
+}
+
+/// Air through a band that sweeps from [Note.hz] to [Note.to], swelling in
+/// and out (a paper door sliding along its track).
+Float64List _slide(Note n, math.Random rnd) {
+  final len = _n(n.len);
+  final noise = Float64List(len);
+  for (var i = 0; i < len; i++) {
+    noise[i] = rnd.nextDouble() * 2 - 1;
+  }
+  final out = Float64List(len);
+  // Sweep in short blocks (a fixed band per block is plenty).
+  const block = 256;
+  var z1 = 0.0, z2 = 0.0;
+  for (var b0 = 0; b0 < len; b0 += block) {
+    final t = b0 / len;
+    final f = n.hz * math.pow((n.to ?? n.hz) / n.hz, t);
+    final c = _bandCoeffs(f.toDouble(), 2.5);
+    for (var i = b0; i < math.min(len, b0 + block); i++) {
+      final y = c.$1 * noise[i] + z1;
+      z1 = c.$2 * noise[i] - c.$4 * y + z2;
+      z2 = c.$3 * noise[i] - c.$5 * y;
+      final tt = i / len;
+      // Rises, holds, eases off: sin^2 swell with a tail.
+      final env = math.pow(math.sin(math.pi * math.min(1, tt * 1.25)), 2).toDouble();
+      // The track's grain: a slow flutter.
+      final grain = 1 + 0.25 * math.sin(2 * math.pi * 23 * i / sampleRate);
+      out[i] = y * env * grain;
+    }
+  }
+  return out;
+}
+
+Float64List _bandNoise(int len, double f, double q, math.Random rnd) {
+  final x = Float64List(len);
+  for (var i = 0; i < len; i++) {
+    x[i] = rnd.nextDouble() * 2 - 1;
+  }
+  return _biquadBand(x, f, q);
+}
+
+/// RBJ band-pass (constant 0 dB peak): (b0, b1, b2, a1, a2), b1 = 0.
+(double, double, double, double, double) _bandCoeffs(double f, double q) {
+  final w = 2 * math.pi * math.min(f, sampleRate * 0.45) / sampleRate;
+  final alpha = math.sin(w) / (2 * q);
+  final a0 = 1 + alpha;
+  return (alpha / a0, 0, -alpha / a0, -2 * math.cos(w) / a0, (1 - alpha) / a0);
+}
+
+Float64List _biquadBand(Float64List x, double f, double q) {
+  final c = _bandCoeffs(f, q);
+  final y = Float64List(x.length);
+  var z1 = 0.0, z2 = 0.0;
+  for (var i = 0; i < x.length; i++) {
+    final v = c.$1 * x[i] + z1;
+    z1 = c.$2 * x[i] - c.$4 * v + z2;
+    z2 = c.$3 * x[i] - c.$5 * v;
+    y[i] = v;
+  }
+  return y;
+}
+
+/// One pole, twice: a soft 12 dB/oct roll-off.
+void _lowpass(Float64List out, double cutoff) {
+  final a = math.exp(-2 * math.pi * cutoff / sampleRate);
+  for (var pass = 0; pass < 2; pass++) {
+    var y = 0.0;
+    for (var i = 0; i < out.length; i++) {
+      y = (1 - a) * out[i] + a * y;
+      out[i] = y;
+    }
+  }
+}
+
+/// Space: four damped feedback combs and two allpasses (a dark, smooth
+/// tail decaying to -60 dB in [tail] s) after a short pre-delay.
+void _space(Float64List out, double mix, double tail) {
+  const combs = [0.0297, 0.0371, 0.0411, 0.0437];
+  const damp = 0.35;
+  final len = out.length;
+  final pre = _n(0.018);
+  final dry = Float64List(len);
+  for (var i = pre; i < len; i++) {
+    dry[i] = out[i - pre];
+  }
+  final wet = Float64List(len);
+  for (final d in combs) {
+    final delay = _n(d);
+    final g = math.pow(0.001, d / tail).toDouble();
+    final y = Float64List(len);
+    var lp = 0.0;
+    for (var i = 0; i < len; i++) {
+      final back = i >= delay ? y[i - delay] : 0.0;
+      lp = back * (1 - damp) + lp * damp;
+      y[i] = dry[i] + g * lp;
+      wet[i] += y[i] / combs.length;
+    }
+  }
+  for (final d in const [0.005, 0.0017]) {
+    final delay = _n(d);
+    final x = Float64List.fromList(wet);
+    for (var i = 0; i < len; i++) {
+      final xd = i >= delay ? x[i - delay] : 0.0;
+      final yd = i >= delay ? wet[i - delay] : 0.0;
+      wet[i] = -0.5 * x[i] + xd + 0.5 * yd;
+    }
+  }
+  for (var i = 0; i < len; i++) {
+    out[i] += mix * wet[i];
+  }
+}
+
+/// [Note.hz] gliding to [Note.to] over the first ~60% of the note.
+double _glide(Note n, double t) =>
+    n.to == null ? n.hz : n.hz * math.pow(n.to! / n.hz, _smooth(math.min(1, t * 1.6))).toDouble();
+
+Float64List _star(Note n) {
+  final len = _n(n.len);
+  final out = Float64List(len);
+  final k = math.log(100) / len;
+  final attack = _n(0.004);
+  final index0 = 0.3 + 3.0 * n.bright;
+  final idxTau = _n(0.09 + 0.12 * n.bright);
+  const ratio = 3.5;
+  var c1 = 0.0, c2 = 0.0, m1 = 0.0, m2 = 0.0;
+  for (var i = 0; i < len; i++) {
+    final hz = _glide(n, i / len);
+    final w = 2 * math.pi * hz / sampleRate;
+    c1 += w;
+    c2 += w * 1.0017;
+    m1 += w * ratio;
+    m2 += w * ratio * 1.0017;
+    final idx = index0 * math.exp(-i / idxTau);
+    final env = math.exp(-k * i) * (i < attack ? _smooth(i / attack) : 1);
+    out[i] = env * 0.5 * (math.sin(c1 + idx * math.sin(m1)) + math.sin(c2 + idx * math.sin(m2)));
+  }
+  return out;
+}
+
+Float64List _drop(Note n) {
+  final len = _n(n.len);
+  final out = Float64List(len);
+  final k = math.log(100) / len;
+  final attack = _n(0.002);
+  final riseTau = _n(0.016);
+  var ph = 0.0;
+  for (var i = 0; i < len; i++) {
+    final t = i / len;
+    final base = n.to == null ? n.hz : n.hz * math.pow(n.to! / n.hz, _smooth(math.min(1, t * 2.5)));
+    final hz = base * (0.62 + 0.38 * (1 - math.exp(-i / riseTau)));
+    ph += 2 * math.pi * hz / sampleRate;
+    final env = math.exp(-k * i) * (i < attack ? _smooth(i / attack) : 1);
+    out[i] = env * (math.sin(ph) + 0.15 * math.sin(2 * ph));
+  }
+  return out;
+}
+
+Float64List _pad(Note n, math.Random rnd) {
+  final len = _n(n.len);
+  final out = Float64List(len);
+  const detune = [-9.0, -3.0, 4.0, 10.0];
+  final ph = [for (var j = 0; j < detune.length + 1; j++) rnd.nextDouble() * 2 * math.pi];
+  final ratios = [for (final c in detune) math.pow(2, c / 1200).toDouble(), 0.5];
+  final amps = [for (final _ in detune) 1.0, 0.45];
+  const a = 0.33;
+  for (var i = 0; i < len; i++) {
+    final t = i / len;
+    final env = t < a ? _smooth(t / a) : math.pow(1 - _smooth((t - a) / (1 - a)), 2).toDouble();
+    final vib = 1 + 0.002 * math.sin(2 * math.pi * 0.3 * i / sampleRate);
+    final hz = _glide(n, t) * vib;
+    var v = 0.0;
+    for (var j = 0; j < ratios.length; j++) {
+      ph[j] += 2 * math.pi * hz * ratios[j] / sampleRate;
+      v += amps[j] * (math.sin(ph[j]) + n.bright * (0.25 * math.sin(2 * ph[j]) + 0.1 * math.sin(3 * ph[j])));
+    }
+    out[i] = env * v / ratios.length;
+  }
+  return out;
+}
+
+Float64List _sub(Note n) {
+  final len = _n(n.len);
+  final out = Float64List(len);
+  final k = math.log(100) / len;
+  final attack = _n(0.025);
+  var ph = 0.0;
+  for (var i = 0; i < len; i++) {
+    final t = i / len;
+    final hz = n.to == null ? n.hz : n.hz * math.pow(n.to! / n.hz, _smooth(t));
+    ph += 2 * math.pi * hz / sampleRate;
+    final env = math.exp(-k * i) * (i < attack ? _smooth(i / attack) : 1);
+    // Overtones so it still reads on small speakers.
+    out[i] = env * (math.sin(ph) + 0.35 * math.sin(2 * ph) + 0.12 * math.sin(3 * ph));
+  }
+  return out;
+}
+
+Float64List _dust(Note n, math.Random rnd) {
+  final len = _n(n.len);
+  final out = Float64List(len);
+  const steps = [0, 2, 4, 7, 9, 12, 14];
+  final count = math.max(4, (n.len * 14).round());
+  for (var g = 0; g < count; g++) {
+    final tg = (g + rnd.nextDouble() * 0.6) / count * 0.75;
+    final start = _n(tg * n.len);
+    final centre = n.to == null ? n.hz : n.hz * math.pow(n.to! / n.hz, tg);
+    final f = centre * math.pow(2, steps[rnd.nextInt(steps.length)] / 12);
+    final glen = math.min(_n(0.1 + 0.15 * rnd.nextDouble()), len - start);
+    if (glen <= 0) continue;
+    final amp = (1 - tg) * (0.5 + 0.5 * rnd.nextDouble());
+    final k = math.log(100) / glen;
+    final w = 2 * math.pi * f / sampleRate;
+    for (var i = 0; i < glen; i++) {
+      out[start + i] += amp * math.exp(-k * i) * (i < 88 ? i / 88 : 1) * math.sin(w * i);
+    }
+  }
+  return out;
+}
+
+/// 16-bit PCM mono WAV.
+Uint8List wav(Float64List samples) {
+  final data = samples.length * 2;
+  final b = ByteData(44 + data);
+  void str(int o, String s) {
+    for (var i = 0; i < s.length; i++) {
+      b.setUint8(o + i, s.codeUnitAt(i));
+    }
+  }
+
+  str(0, 'RIFF');
+  b.setUint32(4, 36 + data, Endian.little);
+  str(8, 'WAVE');
+  str(12, 'fmt ');
+  b.setUint32(16, 16, Endian.little);
+  b.setUint16(20, 1, Endian.little);
+  b.setUint16(22, 1, Endian.little);
+  b.setUint32(24, sampleRate, Endian.little);
+  b.setUint32(28, sampleRate * 2, Endian.little);
+  b.setUint16(32, 2, Endian.little);
+  b.setUint16(34, 16, Endian.little);
+  str(36, 'data');
+  b.setUint32(40, data, Endian.little);
+  for (var i = 0; i < samples.length; i++) {
+    b.setInt16(44 + i * 2, (samples[i].clamp(-1.0, 1.0) * 32767).round(), Endian.little);
+  }
+  return b.buffer.asUint8List();
+}

apps/desktop/lib/src/sfx/synth_sfx.dart

@@ -0,0 +1,88 @@
+import 'dart:async';
+import 'dart:io';
+
+import 'package:flutter/foundation.dart';
+import 'package:media_kit/media_kit.dart';
+import 'package:path_provider/path_provider.dart';
+
+import 'sfx.dart';
+import 'sound_bank.dart';
+import 'synth.dart';
+
+/// Plays [SoundSpec]s: each is rendered once to a WAV in the temp dir and
+/// played on a small pool of audio-only mpv players (so two sounds can
+/// overlap). [volume] (0..1) is read per play and applied on a square
+/// curve (ears are log); [enabled] filters cues.
+class SynthSfx implements SfxService {
+  final double Function() volume;
+  final bool Function(SfxKind kind) enabled;
+  /// Which sound set each sound plays from.
+  final SoundPreset Function(SfxKind kind) presetFor;
+  SynthSfx({required this.volume, bool Function(SfxKind kind)? enabled, SoundPreset Function(SfxKind kind)? presetFor})
+      : enabled = enabled ?? ((_) => true),
+        presetFor = presetFor ?? ((_) => defaultPreset);
+
+  static const _poolSize = 3;
+  final List<Player> _pool = [];
+  var _next = 0;
+  final Map<String, Future<String>> _files = {};
+  Directory? _dir;
+
+  @override
+  Future<void> play(SfxCue cue) async {
+    if (!enabled(cue.kind)) return;
+    final preset = presetFor(cue.kind);
+    await playSpec('${preset.name}-${cue.kind.name}-${cue.readyIndex}',
+        soundFor(cue.kind, readyIndex: cue.readyIndex, preset: preset));
+  }
+
+  /// Plays [kind] even when it is switched off (Settings' preview), always
+  /// freshly rendered: an edited spec plays after a hot reload.
+  Future<void> preview(SfxKind kind, {int readyIndex = 1, SoundPreset? preset}) {
+    final p = preset ?? presetFor(kind);
+    final key = '${p.name}-${kind.name}-$readyIndex';
+    _files.remove(key);
+    return playSpec(key, soundFor(kind, readyIndex: readyIndex, preset: p));
+  }
+
+  /// Plays [spec], cached under [key] (same key = same sound).
+  Future<void> playSpec(String key, SoundSpec spec) async {
+    final v = volume();
+    if (v <= 0) return;
+    try {
+      final path = await (_files[key] ??= _write(key, spec));
+      final player = await _player();
+      await player.setVolume(100 * v * v);
+      await player.open(Media(path));
+    } catch (e) {
+      _files.remove(key);
+      debugPrint('sfx $key: $e');
+    }
+  }
+
+  Future<String> _write(String key, SoundSpec spec) async {
+    _dir ??= await Directory('${(await getTemporaryDirectory()).path}/watch_together_sfx').create(recursive: true);
+    final f = File('${_dir!.path}/$key.wav');
+    await f.writeAsBytes(wav(render(spec)));
+    return f.path;
+  }
+
+  Future<Player> _player() async {
+    if (_pool.length < _poolSize) {
+      final p = Player(
+        configuration: const PlayerConfiguration(vo: 'null', osc: false, libass: false, title: 'sfx'),
+      );
+      await (p.platform as NativePlayer).setProperty('audio-display', 'no');
+      _pool.add(p);
+      return p;
+    }
+    return _pool[_next++ % _poolSize];
+  }
+
+  Future<void> dispose() async {
+    for (final p in _pool) {
+      await p.dispose();
+    }
+    _pool.clear();
+  }
+}

apps/desktop/lib/src/shell/app_shell.dart

@@ -1,14 +1,19 @@
 import 'dart:async';
+import 'dart:io' show File;
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:fox_utils/fox_utils.dart' show ClipboardX, DesktopDropX, DropTarget;
 import 'package:signals/signals_flutter.dart';
 import 'package:window_manager/window_manager.dart';
 
+import '../files/folder_store.dart';
+import '../files/ui/files_page.dart' show showFilesFolder;
 import '../jellyfin/accounts.dart';
 import '../jellyfin/browse_scope.dart' show BrowseStart;
 import '../jellyfin/session_media.dart';
 import '../screens/home/connect_flow.dart';
+import '../session/session_coordinator.dart' show ConnectParams;
 import '../screens/home/health_probe.dart';
 import '../screens/home/media_picker.dart';
 import '../screens/home/profile.dart';
@@ -18,6 +23,7 @@ import '../state/settings.dart';
 import '../update/update_controller.dart';
 import 'chat_panel.dart';
 import 'connect_cards.dart';
+import 'handoff.dart';
 import 'library_tab.dart';
 import 'motion.dart';
 import 'party_strip.dart';
@@ -26,6 +32,7 @@ import '../schedule/ui/schedule_page.dart';
 import 'session_player.dart';
 import 'settings_tab.dart';
 import 'toasts.dart';
+import 'welcome.dart';
 
 /// The one window: the party strip over a body that fades through between
 /// the tabs and the full player, the floating mini player, the chat panel
@@ -36,6 +43,9 @@ import 'toasts.dart';
 /// hidden), mini it is a 384x216 box snapped to a corner. A mode change
 /// fades the layer out, moves it while invisible and fades it back in, so
 /// the video is never mounted twice nor remounted.
+///
+/// A drop anywhere on the window or Ctrl+V outside a text field is a
+/// [Handoff]: a card near the pointer asks how to open it.
 class AppShell extends StatefulWidget {
   final UpdateController? updates;
   final bool autoUpdateCheck;
@@ -88,6 +98,11 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
   Offset? _drag; // mini top-left while dragging
   bool _snapping = false;
 
+  /// Last pointer position in the window (where a paste's card opens).
+  Offset? _pointer;
+  bool _dragging = false;
+  bool _handoffOpen = false;
+
   final _flow = ConnectFlow();
   late final _join = JoinFields(SessionState.instance.lastForm);
   late final _host = HostFields(SessionState.instance.lastForm);
@@ -99,12 +114,15 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
   /// The next media to come up opens full (just joined, or put up here).
   bool _autoFull = false;
   int _lastMediaId = -1;
-  double? _mutedVolume;
   bool _dialogOpen = false;
-  String? _lastKickShown;
   final _stops = <void Function()>[];
   // Rebuild the shell on these flips, not on every state broadcast.
   final _online = computed(() => SessionState.instance.route.value == AppRoute.session);
+  /// Nobody else watches: offline, solo, or solo becoming a server.
+  final _alone = computed(() {
+    final s = SessionState.instance;
+    return s.route.value != AppRoute.session || s.solo.value || s.switching.value;
+  });
   final _hasMedia = computed(() =>
       SessionState.instance.route.value == AppRoute.session &&
       SessionState.instance.coordinator.serverState.value?.media != null);
@@ -127,7 +145,7 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
     // Reads linked servers and checks their tokens in the background.
     _jellyfin.ensureLoaded();
     if (widget.autoUpdateCheck) _autoCheck();
-    _flow.onKicked = _showKicked;
+    HardwareKeyboard.instance.addHandler(_onKey);
     final session = SessionState.instance;
     final coord = session.coordinator;
     _feedSeen = coord.feedLog.peek().length;
@@ -167,17 +185,28 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
             if (!_chatOpen) setState(() => _unread += chats);
           }));
     }));
-    // Kicked: back offline, and say so.
+    // Back from sitting out with the player closed: show it (the media
+    // plays again).
+    var wasOut = false;
     _stops.add(effect(() {
-      final kick = coord.kickReason.value;
-      if (kick == null) {
-        _lastKickShown = null;
-        return;
-      }
-      untracked(() {
-        if (session.route.value == AppRoute.session) session.route.value = AppRoute.home;
+      final out = coord.selfOut.value;
+      if (wasOut && !out && session.route.peek() == AppRoute.session) {
+        _later(() {
+          if (_mode == PlayerMode.none) _show(PlayerMode.mini);
+        });
+      }
+      wasOut = out;
+    }));
+    // Solo becoming a hosted server: the player closes while the media
+    // moves over and comes back the way it was once it is up again.
+    _stops.add(effect(() {
+      if (!session.switching.value) return;
+      _later(() {
+        _lastMediaId = -1;
+        _autoFull = _mode == PlayerMode.full;
+        if (_fullscreen) _toggleFullscreen();
+        _show(PlayerMode.none);
       });
-      if (kick.isNotEmpty) _later(() => _showKicked(kick));
     }));
     // The hosted server died mid-session (SessionState leaves): say so.
     _stops.add(effect(() {
@@ -195,8 +224,10 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
     for (final stop in _stops) {
       stop();
     }
+    HardwareKeyboard.instance.removeHandler(_onKey);
     _fade.dispose();
     _online.dispose();
+    _alone.dispose();
     _hasMedia.dispose();
     _flow.dispose();
     _join.dispose();
@@ -227,7 +258,6 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
   }
 
   void _wentOffline() {
-    _mutedVolume = null;
     if (_fullscreen) _toggleFullscreen();
     setState(() {
       _chatOpen = false;
@@ -243,7 +273,6 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
   Future<void> _show(PlayerMode m) async {
     if (m == _mode) return;
     final seq = ++_modeSeq;
-    if (m != PlayerMode.none) _unmute();
     setState(() {
       _from = _shown;
       _mode = m;
@@ -267,27 +296,15 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
     _show(PlayerMode.mini);
   }
 
-  /// Mini's ×: stop watching but stay in the server (muted until shown).
+  /// The player's ×: sit out (stay in the server, nothing loaded; the
+  /// player shows the join-back card). Once out, × closes the player.
   void _closePlayer() {
-    final playback = SessionState.instance.coordinator.playback;
-    if (playback.alive.peek()) {
-      try {
-        _mutedVolume = playback.player.state.volume;
-        playback.player.setVolume(0);
-      } catch (_) {}
-    }
+    final coord = SessionState.instance.coordinator;
+    if (coord.selfOut.peek()) {
       _show(PlayerMode.none);
+    } else {
+      coord.sitOut();
     }
-
-  void _unmute() {
-    final v = _mutedVolume;
-    if (v == null) return;
-    _mutedVolume = null;
-    final playback = SessionState.instance.coordinator.playback;
-    if (!playback.alive.peek()) return;
-    try {
-      playback.player.setVolume(v);
-    } catch (_) {}
   }
 
   Future<void> _setWindowFullscreen(bool on) async {
@@ -345,7 +362,8 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
     _selectTab(ShellTab.library);
   }
 
-  /// Library → "Put it up for everyone"; the player opens full.
+  /// Library → "Put it up for everyone"; the player opens full. Offline
+  /// it starts a solo session first (just you, on this computer).
   Future<String?> _putUp(PickedMedia media) async {
     final session = SessionState.instance;
     if (media is JellyfinMedia) {
@@ -356,6 +374,14 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
       }
       unawaited(_jellyfin.rememberPick(media));
     }
+    if (!_online.peek()) {
+      final error = await _startSolo();
+      if (error != null || !mounted) return error;
+    }
+    // Alone, a link plays direct: there is nobody to pass it on to.
+    if (media is LinkMedia && session.solo.peek()) {
+      media = LinkMedia(media.url, relay: LinkRelay.direct, anyway: media.anyway);
+    }
     final error = await session.coordinator.swapPicked(media);
     if (error != null || !mounted) return error;
     final f = session.lastForm;
@@ -368,9 +394,168 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
     return null;
   }
 
+  /// Starts a solo session; returns an error text, or null.
+  Future<String?> _startSolo() async {
+    final profile = Profile.instance;
+    try {
+      await profile.ensureLoaded();
+      final name = profile.name.peek().trim();
+      await SessionState.instance.startSolo(ConnectParams(
+        host: '127.0.0.1',
+        port: 0,
+        secret: '',
+        name: name.isEmpty ? 'Me' : name,
+        avatar: profile.avatarBase64(),
+      ));
+      return null;
+    } catch (e) {
+      return "couldn't start playing: $e";
+    }
+  }
+
+  /// Library's "Watch solo": somewhere to pick from (Jellyfin when linked,
+  /// else Files).
+  void _watchSolo() => _openLibrary(_jellyfin.isEmpty ? MediaKind.file : MediaKind.jellyfin);
+
+  // --------------------------------------------------------------- handoff
+
+  /// Nothing (a dialog, a popover) is over the shell.
+  bool get _onTop => !_handoffOpen && handoffHolds == 0 && (ModalRoute.of(context)?.isCurrent ?? true);
+
+  /// Ctrl+V outside a text field (a focused field pastes on its own).
+  bool _onKey(KeyEvent e) {
+    if (e is! KeyDownEvent || e.logicalKey != LogicalKeyboardKey.keyV) return false;
+    final keys = HardwareKeyboard.instance;
+    if (!(keys.isControlPressed || keys.isMetaPressed) || keys.isShiftPressed || keys.isAltPressed) return false;
+    if (!mounted || !_onTop) return false;
+    final inField =
+        FocusManager.instance.primaryFocus?.context?.findAncestorStateOfType<EditableTextState>() != null;
+    if (inField) return false;
+    unawaited(_paste());
+    return true;
+  }
+
+  /// Clipboard files first, then text (a link or absolute paths). A pasted
+  /// image has no taker yet, so the clipboard's image data is not read.
+  Future<void> _paste() async {
+    var files = const <String>[];
+    String? text;
+    try {
+      files = await ClipboardX.readFiles();
+    } catch (_) {}
+    if (files.isEmpty) {
+      try {
+        text = await ClipboardX.readText();
+      } catch (_) {}
+    }
+    await _handOff(classifyHandoff(paths: files, text: text), _pointer);
+  }
+
+  Future<void> _handOff(Handoff item, Offset? at) async {
+    if (!mounted || !_onTop || item is HandoffNothing || item is HandoffImage) return;
+    final size = MediaQuery.sizeOf(context);
+    final align = at == null || size.isEmpty
+        ? Alignment.center
+        : Alignment((at.dx / size.width * 2 - 1).clamp(-1, 1), (at.dy / size.height * 2 - 1).clamp(-1, 1));
+    _handoffOpen = true;
+    final HandoffAction? action;
+    try {
+      action = await showPopover<HandoffAction>(context,
+          at: align, child: HandoffCard(item: item, solo: _alone.peek(), queue: _online.peek()));
+    } finally {
+      _handoffOpen = false;
+    }
+    if (action == null || !mounted) return;
+    switch ((item, action)) {
+      case (HandoffVideos(:final paths), HandoffAction.putUp):
+        final error = await _putUp(FileMedia(paths.first));
+        if (error != null) {
+          SessionState.instance.coordinator.showToast(error);
+        } else {
+          await FolderStore.instance.ensureLoaded();
+          FolderStore.instance.addRecent(paths.first);
+        }
+      case (HandoffVideos(:final paths), HandoffAction.queue || HandoffAction.playNext):
+        // In order: with Play next, the last one added goes first.
+        final next = action == HandoffAction.playNext;
+        for (final p in next ? paths.reversed : paths) {
+          final error = await SessionState.instance.coordinator.queue.add(FileMedia(p), next: next);
+          if (error != null) {
+            SessionState.instance.coordinator.showToast(error);
+            break;
+          }
+        }
+      case (HandoffLink(:final url), HandoffAction.queue || HandoffAction.playNext):
+        // In the Link page's mode, probed and refused like there.
+        final coord = SessionState.instance.coordinator;
+        final error = await coord.queue
+            .add(LinkMedia(url, relay: _picker.linkRelay), next: action == HandoffAction.playNext);
+        if (error != null) coord.showToast(error);
+      case (HandoffVideos(:final paths), HandoffAction.addFolder):
+        await _addFolder(File(paths.first).parent.path);
+      case (HandoffFolder(:final path), _):
+        await _addFolder(path);
+      case (HandoffLink(:final url), _):
+        _picker.link.text = url;
+        _openLibrary(MediaKind.link);
+      default:
+    }
+  }
+
+  Future<void> _addFolder(String dir) async {
+    await FolderStore.instance.ensureLoaded();
+    FolderStore.instance.addFolder(dir);
+    _openFiles(dir);
+  }
+
+  /// Library → Files on [dir] (null: Recent).
+  void _openFiles(String? dir) {
+    showFilesFolder(dir);
+    _openLibrary(MediaKind.file);
+  }
+
+  void _openLibrary(MediaKind source) {
+    if (!mounted) return;
+    _picker.source = source;
+    _selectTab(ShellTab.library);
+  }
+
+  // Off on Settings: its own drop targets (cookies) take the files there.
+  Widget _dropTarget(Widget child) => DropTarget(
+        enable: _tab != ShellTab.settings,
+        onDragEntered: (_) => setState(() => _dragging = _onTop),
+        onDragExited: (_) => setState(() => _dragging = false),
+        onDragDone: (d) {
+          setState(() => _dragging = false);
+          _handOff(classifyHandoff(paths: DesktopDropX.pathsOf(d.files)), d.localPosition);
+        },
+        child: Stack(
+          fit: StackFit.expand,
+          children: [
+            child,
+            Positioned.fill(
+              child: IgnorePointer(
+                child: AnimatedOpacity(
+                  duration: easeTime,
+                  curve: ease,
+                  opacity: _dragging ? 1 : 0,
+                  child: const _DropOverlay(),
+                ),
+              ),
+            ),
+          ],
+        ),
+      );
+
   // --------------------------------------------------------------- dialogs
 
+  /// Leave asks first; a solo session just stops.
   Future<void> _confirmLeave() async {
+    final session = SessionState.instance;
+    if (session.solo.peek()) {
+      await session.leave();
+      return;
+    }
     final ok = await showDialog<bool>(
       context: context,
       builder: (context) => AlertDialog(
@@ -389,12 +574,6 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
     if (ok == true) await SessionState.instance.leave();
   }
 
-  Future<void> _showKicked(String reason) async {
-    if (reason == _lastKickShown) return;
-    _lastKickShown = reason;
-    await _alert('You were removed', reason.isEmpty ? 'The host removed you from the server.' : reason);
-  }
-
   Future<void> _alert(String title, String text) async {
     if (!mounted || _dialogOpen) return;
     _dialogOpen = true;
@@ -426,7 +605,7 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
   @override
   Widget build(BuildContext context) {
     final scheme = Theme.of(context).colorScheme;
-    return CallbackShortcuts(
+    final shell = CallbackShortcuts(
       bindings: {
         const SingleActivator(LogicalKeyboardKey.comma, control: true): () => _selectTab(ShellTab.settings),
       },
@@ -434,6 +613,7 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
         backgroundColor: _fullscreen ? Colors.black : scheme.surface,
         body: SignalBuilder(builder: (context) {
           final online = _online.value;
+          final alone = _alone.value;
           final hasMedia = _hasMedia.value;
           return Column(
             children: [
@@ -448,6 +628,7 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
                   onJoin: () => _connect(ConnectMode.join),
                   onHost: () => _connect(ConnectMode.host),
                   onLeave: _confirmLeave,
+                  onInvite: () => _connect(ConnectMode.host),
                   onProfile: () => showProfileCard(context, onOpenSettings: _openSettings, updates: widget.updates),
                   onShowPlayer: hasMedia && _mode == PlayerMode.none ? () => _show(PlayerMode.mini) : null,
                   updates: widget.updates,
@@ -457,7 +638,7 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
                 key: const ValueKey('body'),
                 child: Row(
                   children: [
-                    Expanded(child: _body(online)),
+                    Expanded(child: _body(online, alone)),
                     AnimatedSize(
                       duration: easeTime,
                       curve: ease,
@@ -474,24 +655,49 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
         }),
       ),
     );
+    return Listener(
+      onPointerHover: (e) => _pointer = e.localPosition,
+      onPointerDown: (e) => _pointer = e.localPosition,
+      child: _dropTarget(shell),
+    );
   }
 
-  Widget _body(bool online) {
+  /// No Jellyfin account, no server joined or hosted yet, band not
+  /// dismissed: the welcome band explains the three ways in.
+  bool get _newcomer =>
+      !AppSettings.instance.welcomeDismissed.value &&
+      _jellyfin.isEmpty &&
+      SessionState.instance.recents.value.isEmpty;
+
+  Widget _body(bool online, bool alone) {
     final coord = SessionState.instance.coordinator;
     final tabBody = switch (_tab) {
       ShellTab.library => LibraryTab(
           key: ValueKey('library-$_libraryGen'),
           controller: _picker,
           accounts: _jellyfin,
-          online: online,
-          isHost: coord.hostFile != null,
+          solo: alone,
+          // Offline, a put-up starts a solo session, which hosts.
+          isHost: !online || coord.hostFile != null,
+          // Only for newcomers: the strip has Join and Host for everyone else.
+          banner: online || !_newcomer
+              ? null
+              : WelcomeBand(
+                  onJoin: () => _connect(ConnectMode.join),
+                  onHost: () => _connect(ConnectMode.host),
+                  onSolo: _watchSolo,
+                  onDismiss: () => setState(AppSettings.instance.dismissWelcome),
+                ),
           jellyfinStart: _libraryStart,
           onPutUp: _putUp,
+          // Up next needs a server (a solo session has one).
+          onAddToQueue: online ? coord.queue.add : null,
           onOpenIntegrations: () => _openSettings(SettingsSection.integrations),
         ),
       ShellTab.schedule => SchedulePage(
-          online: online,
+          solo: alone,
           onPutUp: _putUp,
+          onAddToQueue: online ? coord.queue.add : null,
           onToast: coord.showToast,
         ),
       ShellTab.settings => SettingsTab(
@@ -533,7 +739,11 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
             ),
           ),
           if (online && _shown != PlayerMode.none) _playerLayer(area),
-          Positioned(left: 16, bottom: _fullscreen ? 90 : 16, child: const PartyToasts()),
+          Positioned(left: 16, bottom: _fullscreen ? 90 : 16, child: PartyToasts(
+            onOpenChat: () {
+              if (!_chatOpen) _toggleChat();
+            },
+          )),
         ],
       );
     });
@@ -619,3 +829,39 @@ class AppShellState extends State<AppShell> with SingleTickerProviderStateMixin
     );
   }
 }
+
+/// Over the window while something is dragged over it.
+class _DropOverlay extends StatelessWidget {
+  const _DropOverlay();
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    return Container(
+      key: const ValueKey('drop-overlay'),
+      margin: const EdgeInsets.all(10),
+      decoration: BoxDecoration(
+        color: scheme.surface.withValues(alpha: 0.55),
+        borderRadius: BorderRadius.circular(18),
+        border: Border.all(color: scheme.primary.withValues(alpha: 0.7), width: 2),
+      ),
+      alignment: Alignment.center,
+      child: Material(
+        color: scheme.surfaceContainerHigh,
+        borderRadius: BorderRadius.circular(14),
+        elevation: 8,
+        child: Padding(
+          padding: const EdgeInsets.symmetric(horizontal: 18, vertical: 12),
+          child: Row(
+            mainAxisSize: MainAxisSize.min,
+            children: [
+              Icon(Icons.file_download_outlined, color: scheme.primary),
+              const SizedBox(width: 10),
+              Text('Drop to open', style: Theme.of(context).textTheme.titleMedium),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

apps/desktop/lib/src/shell/avatar.dart

@@ -5,6 +5,7 @@ import 'package:signals/signals_flutter.dart';
 import 'package:sync_relay_core/core.dart';
 
 import '../screens/home/profile.dart';
+import '../session/delivery.dart';
 import '../session/session_coordinator.dart';
 import '../state/session_state.dart';
 import 'motion.dart';
@@ -17,6 +18,14 @@ class AvatarInfo {
   final Color color;
   final ImageProvider? image;
   final bool ready, buffering, relaying, stale, host, self;
+  /// Sitting out: dimmed, with an "away" mark.
+  final bool out;
+  /// Why their player cannot open the media (`members[].error`): an error
+  /// mark; empty when it can.
+  final String error;
+  /// How it gets the media and its buffer ([MemberDelivery.detail]), for
+  /// the hover; empty when unknown.
+  final String delivery;
   const AvatarInfo({
     this.id = '',
     required this.name,
@@ -28,6 +37,9 @@ class AvatarInfo {
     this.stale = false,
     this.host = false,
     this.self = false,
+    this.out = false,
+    this.error = '',
+    this.delivery = '',
   });
 }
 
@@ -75,7 +87,7 @@ ImageProvider? memberAvatarImage(MemberView m, SessionCoordinator coord) {
 }
 
 /// Your own avatar from the profile (also offline).
-AvatarInfo selfAvatarInfo({bool ready = false, bool host = false}) {
+AvatarInfo selfAvatarInfo({bool ready = false, bool host = false, bool out = false, String error = ''}) {
   final p = Profile.instance;
   final png = p.picture.value;
   final name = p.name.value;
@@ -86,6 +98,8 @@ AvatarInfo selfAvatarInfo({bool ready = false, bool host = false}) {
     ready: ready,
     host: host,
     self: true,
+    out: out,
+    error: error,
   );
 }
 
@@ -94,19 +108,23 @@ AvatarInfo memberAvatarInfo(MemberView m, StateBroadcast? r, SessionCoordinator
   final self = m.id.isNotEmpty && m.id == coord.sync.memberId;
   final relay = r == null ? null : stateMediaRelay(r);
   final playing = r?.media != null;
+  final delivery = r == null ? null : deliveryOf(r, selfId: coord.sync.memberId, names: coord.memberNames);
   return AvatarInfo(
     id: m.id,
     name: m.name,
     color: self ? Profile.instance.color.value : colorForName(m.name),
     image: memberAvatarImage(m, coord),
     ready: m.ready,
-    buffering: !m.stale && m.ready && playing && m.buffered < RelayConstants.minBufferSecs,
+    buffering: !m.stale && m.ready && m.error.isEmpty && playing && m.buffered < r!.bufferNeed,
     relaying: relay != null && relay.source.isNotEmpty && relay.source == m.id,
     stale: m.stale,
     // The state marks the host (`members[].host`); your own app also
     // knows before the first state.
     host: m.host || (self && coord.hostFile != null),
     self: self,
+    out: m.out,
+    error: m.error,
+    delivery: delivery == null ? '' : memberDeliveryOf(m, r!, delivery).detail,
   );
 }
 
@@ -132,7 +150,8 @@ class PartyWatch extends StatelessWidget {
 
 /// Circle avatar with a status ring outside it and a gap in the background
 /// colour, so overlapping neighbours never hide the status. Crown = host,
-/// tower = passing the video on, spinner = buffering, dimmed = stale.
+/// tower = passing the video on, spinner = buffering, dimmed = stale,
+/// dimmed with a moon = sitting out, red "!" = cannot play the media.
 class StatusAvatar extends StatelessWidget {
   final AvatarInfo info;
   final double size;
@@ -176,7 +195,7 @@ class StatusAvatar extends StatelessWidget {
                 decoration: BoxDecoration(shape: BoxShape.circle, color: bg),
                 padding: EdgeInsets.all(stroke),
                 child: Opacity(
-                  opacity: info.stale ? 0.4 : 1,
+                  opacity: info.stale || info.out ? 0.4 : 1,
                   child: CircleAvatar(
                     radius: size / 2,
                     backgroundColor: info.color,
@@ -205,6 +224,28 @@ class StatusAvatar extends StatelessWidget {
                 ),
               ),
             ),
+          if (info.out)
+            Positioned(
+              key: const ValueKey('away-mark'),
+              left: -3,
+              bottom: -3,
+              child: Container(
+                padding: const EdgeInsets.all(2),
+                decoration: BoxDecoration(shape: BoxShape.circle, color: bg),
+                child: Icon(Icons.bedtime, size: (badge * 0.8).clamp(10.0, 24.0), color: Colors.blueGrey.shade200),
+              ),
+            ),
+          if (info.error.isNotEmpty)
+            Positioned(
+              key: const ValueKey('error-mark'),
+              right: -3,
+              top: -3,
+              child: Container(
+                padding: const EdgeInsets.all(1),
+                decoration: BoxDecoration(shape: BoxShape.circle, color: bg),
+                child: Icon(Icons.error, size: (badge * 0.8).clamp(10.0, 24.0), color: Colors.redAccent.shade200),
+              ),
+            ),
           if (badges && info.relaying)
             Positioned(
               right: -3,
@@ -240,7 +281,7 @@ class _AvatarStackState extends State<AvatarStack> {
   @override
   Widget build(BuildContext context) {
     final size = widget.size;
-    int rank(AvatarInfo m) => m.host ? 0 : (m.ready ? 1 : 2);
+    int rank(AvatarInfo m) => m.host ? 0 : (m.out ? 3 : m.ready ? 1 : 2);
     final sorted = [...widget.members]..sort((a, b) => rank(a) - rank(b));
     final visible = sorted.take(widget.shown).toList();
     final extra = sorted.length - visible.length;
@@ -270,7 +311,12 @@ class _AvatarStackState extends State<AvatarStack> {
                   left: i * step,
                   top: 0,
                   child: Tooltip(
-                    message: visible[i].name,
+                    message: [
+                      visible[i].error.isEmpty
+                          ? visible[i].name
+                          : "${visible[i].name} can't play this: ${visible[i].error}",
+                      if (visible[i].delivery.isNotEmpty) visible[i].delivery,
+                    ].join('\n'),
                     child: StatusAvatar(info: visible[i], size: size),
                   ),
                 ),

apps/desktop/lib/src/shell/chat_panel.dart

@@ -1,22 +1,72 @@
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:sync_relay_core/core.dart';
 
 import '../state/session_state.dart';
+import '../widgets/app_menu.dart';
+import '../widgets/copy_open.dart';
+import '../widgets/text_focus.dart';
 import 'avatar.dart';
 
-/// Side panel: chat with avatars, other activity as quiet lines, and the
-/// message field. Width is fixed; the shell slides it in and out.
-class ChatPanel extends StatelessWidget {
+/// Activity lines (joins, ready, seeks...) between the messages: off by
+/// default, kept for the app's run.
+final showActivity = ValueNotifier(false);
+
+/// Side panel: chat with avatars, other activity as quiet lines (behind
+/// the "Activity" toggle), and the message field. Width is fixed; the
+/// shell slides it in and out. The field takes focus on open; Tab and Esc
+/// in it close the panel.
+class ChatPanel extends StatefulWidget {
   static const width = 340.0;
   final TextEditingController chat;
   final FocusNode chatFocus;
   final VoidCallback onClose;
   const ChatPanel({super.key, required this.chat, required this.chatFocus, required this.onClose});
 
+  @override
+  State<ChatPanel> createState() => _ChatPanelState();
+}
+
+class _ChatPanelState extends State<ChatPanel> {
+  // Where focus was before the field took it; it goes back there on close
+  // (else a field behind could take it, and Space with it).
+  FocusNode? _before;
+
+  @override
+  void initState() {
+    super.initState();
+    WidgetsBinding.instance.addPostFrameCallback((_) {
+      if (!mounted) return;
+      final before = FocusManager.instance.primaryFocus;
+      if (before != widget.chatFocus) _before = before;
+      widget.chatFocus.requestFocus();
+    });
+  }
+
+  @override
+  void dispose() {
+    final before = _before;
+    if (before != null && before.context != null && before.canRequestFocus && !textInputFocused(before)) {
+      before.requestFocus();
+    } else if (textInputFocused()) {
+      FocusManager.instance.primaryFocus?.unfocus();
+    }
+    super.dispose();
+  }
+
   void _send() {
-    SessionState.instance.coordinator.sendChat(chat.text);
-    chat.clear();
-    chatFocus.requestFocus();
+    SessionState.instance.coordinator.sendChat(widget.chat.text);
+    widget.chat.clear();
+    widget.chatFocus.requestFocus();
+  }
+
+  KeyEventResult _fieldKey(FocusNode node, KeyEvent e) {
+    if (e is! KeyDownEvent) return KeyEventResult.ignored;
+    if (e.logicalKey != LogicalKeyboardKey.tab && e.logicalKey != LogicalKeyboardKey.escape) {
+      return KeyEventResult.ignored;
+    }
+    widget.onClose();
+    return KeyEventResult.handled;
   }
 
   @override
@@ -24,7 +74,7 @@ class ChatPanel extends StatelessWidget {
     final scheme = Theme.of(context).colorScheme;
     return Container(
       key: const ValueKey('chat-panel'),
-      width: width,
+      width: ChatPanel.width,
       color: scheme.surfaceContainerLow,
       child: Column(
         children: [
@@ -32,18 +82,35 @@ class ChatPanel extends StatelessWidget {
             padding: const EdgeInsets.fromLTRB(16, 8, 4, 0),
             child: Row(
               children: [
-                const Text('Chat & activity', style: TextStyle(fontWeight: FontWeight.w600)),
+                const Text('Chat', style: TextStyle(fontWeight: FontWeight.w600)),
                 const Spacer(),
-                IconButton(tooltip: 'Close (Tab)', onPressed: onClose, icon: const Icon(Icons.close, size: 18)),
+                ValueListenableBuilder<bool>(
+                  valueListenable: showActivity,
+                  builder: (context, on, _) => FilterChip(
+                    key: const ValueKey('chat-activity'),
+                    label: const Text('Activity', style: TextStyle(fontSize: 12)),
+                    tooltip: 'Show joins, ready, seeks and other activity',
+                    selected: on,
+                    showCheckmark: false,
+                    visualDensity: VisualDensity.compact,
+                    materialTapTargetSize: MaterialTapTargetSize.shrinkWrap,
+                    onSelected: (v) => showActivity.value = v,
+                  ),
+                ),
+                IconButton(tooltip: 'Close (Tab)', onPressed: widget.onClose, icon: const Icon(Icons.close, size: 18)),
               ],
             ),
           ),
           Expanded(
-            child: PartyWatch(builder: (context) {
-              final log = SessionState.instance.coordinator.feedLog.value;
+            child: ValueListenableBuilder<bool>(
+              valueListenable: showActivity,
+              builder: (context, activity, _) => PartyWatch(builder: (context) {
+                final all = SessionState.instance.coordinator.feedLog.value;
+                final log = activity ? all : [for (final f in all) if (f.action == 'chat') f];
                 if (log.isEmpty) {
                   return Center(
-                  child: Text('Nothing yet', style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12)),
+                    child: Text(activity ? 'Nothing yet' : 'No messages yet',
+                        style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12)),
                   );
                 }
                 return ListView.builder(
@@ -54,12 +121,17 @@ class ChatPanel extends StatelessWidget {
                 );
               }),
             ),
+          ),
           Padding(
             padding: const EdgeInsets.all(12),
+            child: Focus(
+              canRequestFocus: false,
+              skipTraversal: true,
+              onKeyEvent: _fieldKey,
               child: TextField(
                 key: const ValueKey('chat-field'),
-              controller: chat,
-              focusNode: chatFocus,
+                controller: widget.chat,
+                focusNode: widget.chatFocus,
                 onSubmitted: (_) => _send(),
                 decoration: InputDecoration(
                   hintText: 'Message (Enter)',
@@ -70,6 +142,7 @@ class ChatPanel extends StatelessWidget {
                 ),
               ),
             ),
+          ),
         ],
       ),
     );
@@ -87,7 +160,30 @@ class ActivityRow extends StatelessWidget {
     final scheme = Theme.of(context).colorScheme;
     final time = _clock(item.at);
     if (item.action == 'chat') {
-      return Padding(
+      final link = firstLinkIn(item.reason);
+      // Right-click on the text: its selection menu plus the whole message
+      // and its link; beside it, the same as the app's menu.
+      final message = SelectableText(
+        item.reason,
+        contextMenuBuilder: (context, state) => AdaptiveTextSelectionToolbar.buttonItems(
+          anchors: state.contextMenuAnchors,
+          buttonItems: [
+            ...state.contextMenuButtonItems,
+            for (final (label, action) in _messageActions(item.reason, link))
+              ContextMenuButtonItem(
+                label: label,
+                onPressed: () {
+                  state.hideToolbar();
+                  action();
+                },
+              ),
+          ],
+        ),
+      );
+      return Builder(
+        builder: (context) => GestureDetector(
+          onSecondaryTap: () => _messageMenu(context, item.reason, link),
+          child: Padding(
             padding: const EdgeInsets.symmetric(vertical: 6),
             child: Row(
               crossAxisAlignment: CrossAxisAlignment.start,
@@ -110,12 +206,14 @@ class ActivityRow extends StatelessWidget {
                           Text(time, style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 11)),
                         ],
                       ),
-                  SelectableText(item.reason),
+                      message,
                     ],
                   ),
                 ),
               ],
             ),
+          ),
+        ),
       );
     }
     final (icon, color, text) = item.actor == 'server' ? serverFeedStyle(item) : feedStyle(item, scheme);
@@ -135,6 +233,28 @@ class ActivityRow extends StatelessWidget {
   }
 }
 
+/// The first http(s) link in [text], if any.
+String? firstLinkIn(String text) => RegExp(r'https?://[^\s<>"]+', caseSensitive: false).firstMatch(text)?.group(0);
+
+/// What a chat message offers: Copy message, and its link's Copy link and
+/// Open in browser.
+List<(String, VoidCallback)> _messageActions(String text, String? link) => [
+      (ReuseText.copyMessage, () => copyToClipboard(text, done: 'Message copied')),
+      if (link != null) ...[
+        (ReuseText.copyLink, () => copyToClipboard(link, done: 'Link copied')),
+        (ReuseText.openInBrowser, () => openLink(link)),
+      ],
+    ];
+
+/// Right-click beside a chat message: [_messageActions] in the app's menu.
+Future<void> _messageMenu(BuildContext context, String text, String? link) async {
+  final actions = _messageActions(text, link);
+  final pick = await showAppMenu<int>(context, items: [
+    for (final (i, (label, _)) in actions.indexed) AppMenuItem(value: i, label: label),
+  ]);
+  if (pick != null) actions[pick].$2();
+}
+
 /// Icon, colour and wording of a member's feed action.
 (IconData, Color, String) feedStyle(FeedMessage f, ColorScheme scheme) {
   switch (f.action) {
@@ -161,9 +281,20 @@ class ActivityRow extends StatelessWidget {
       return (Icons.swap_horiz, scheme.primary, 'changed the media');
     case 'stale':
       return (Icons.cloud_off, Colors.orange, 'lost signal');
-    case 'kick':
-      final reason = f.reason.isEmpty ? '' : ' · ${f.reason}';
-      return (Icons.gavel, Colors.red, 'kicked ${f.target ?? ''}$reason');
+    case 'out':
+      final who = f.target;
+      return (Icons.bedtime, Colors.blueGrey, who == null || who.isEmpty ? 'is sitting out' : 'sat $who out');
+    case 'back':
+      return (Icons.login, Colors.green, 'joined back');
+    case 'queue-add':
+      return (Icons.playlist_add_rounded, scheme.primary, 'added ${f.target ?? ''} to Up next');
+    case 'queue-remove':
+      return (Icons.playlist_remove_rounded, Colors.grey, 'removed ${f.target ?? ''} from Up next');
+    case 'queue-skip':
+      final why = f.reason.isEmpty ? '' : ' · ${f.reason}';
+      return (Icons.redo_rounded, Colors.orange, 'skipped ${f.target ?? ''}$why');
+    case 'fetch-fail':
+      return (Icons.cloud_off, Colors.red, "couldn't fetch ${f.target ?? 'the video'}");
     default:
       final target = f.target == null || f.target!.isEmpty ? '' : ' ${f.target}';
       return (Icons.info_outline, Colors.grey, '${f.action}$target');

apps/desktop/lib/src/shell/connect_cards.dart

@@ -41,8 +41,9 @@ class HostFields {
   }
 }
 
-/// The strip's Join / Host buttons: a card over the window. It closes
-/// itself once the attempt got in; a failed one shows its error inside.
+/// The strip's Join / Host buttons (and solo's Invite friends, the Host
+/// card): a card over the window. It closes itself once the attempt got
+/// in; a failed one shows its error inside.
 Future<void> showConnectCard(
   BuildContext context, {
   required ConnectMode mode,
@@ -77,7 +78,9 @@ class _CloseWhenOnlineState extends State<_CloseWhenOnline> {
   void initState() {
     super.initState();
     _stop = effect(() {
-      if (SessionState.instance.route.value != AppRoute.session) return;
+      final s = SessionState.instance;
+      // Solo is in a session too: wait until it is a hosted server.
+      if (s.route.value != AppRoute.session || s.solo.value || s.switching.value) return;
       WidgetsBinding.instance.addPostFrameCallback((_) {
         if (mounted) Navigator.of(context).maybePop();
       });
@@ -153,7 +156,7 @@ class JoinCard extends StatelessWidget {
       builder: (context, _) {
         final busy = flow.busy == ConnectMode.join;
         return _Card(
-          title: 'Join a server',
+          title: 'Join a friend',
           children: [
             SignalBuilder(builder: (context) {
               final list = [
@@ -221,6 +224,13 @@ class JoinCard extends StatelessWidget {
             const SizedBox(height: 16),
             ConnectButton(flow: flow, mode: ConnectMode.join, label: 'Join', onSubmit: _join, expand: true),
             ConnectFeedback(flow: flow, mode: ConnectMode.join),
+            const Padding(
+              padding: EdgeInsets.only(top: 8),
+              child: Text(
+                'Your friend gives you the address and password. No account or Jellyfin needed.',
+                style: TextStyle(color: Colors.grey, fontSize: 12),
+              ),
+            ),
           ],
         );
       },
@@ -243,10 +253,13 @@ class HostCard extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
+    // From a solo session this is "Invite friends": same server settings,
+    // and what plays carries over.
+    final solo = SessionState.instance.solo.peek();
     return ListenableBuilder(
       listenable: flow,
       builder: (context, _) => _Card(
-        title: 'Host a server',
+        title: solo ? 'Invite friends' : 'Host a server',
         children: [
           AbsorbPointer(
             absorbing: flow.busy == ConnectMode.host,
@@ -281,13 +294,16 @@ class HostCard extends StatelessWidget {
             ),
           ),
           const SizedBox(height: 16),
-          ConnectButton(flow: flow, mode: ConnectMode.host, label: 'Host', onSubmit: _host, expand: true),
+          ConnectButton(
+              flow: flow, mode: ConnectMode.host, label: solo ? 'Start hosting' : 'Host', onSubmit: _host, expand: true),
           ConnectFeedback(flow: flow, mode: ConnectMode.host),
-          const Padding(
-            padding: EdgeInsets.only(top: 8),
+          Padding(
+            padding: const EdgeInsets.only(top: 8),
             child: Text(
-              'You pick what to watch afterwards, in the library.',
-              style: TextStyle(color: Colors.grey, fontSize: 12),
+              solo
+                  ? 'Your video keeps playing from where it is; friends join with your address.'
+                  : 'You pick what to watch afterwards, in the library.',
+              style: const TextStyle(color: Colors.grey, fontSize: 12),
             ),
           ),
         ],

apps/desktop/lib/src/shell/delivery_line.dart

@@ -0,0 +1,176 @@
+import 'package:flutter/material.dart';
+
+import '../session/delivery.dart';
+import 'motion.dart';
+
+// The members card's view of [Delivery]: one source line on top, a buffer
+// dot on each member. Nothing of it sits on the picture.
+
+Color _tone(SourceState s, ColorScheme scheme) => switch (s) {
+      SourceState.ok => scheme.primary,
+      SourceState.slow || SourceState.waiting => Colors.amber,
+      SourceState.left => Colors.redAccent.shade200,
+    };
+
+IconData _icon(Delivery d) => switch (d.state) {
+      SourceState.left => Icons.link_off_rounded,
+      SourceState.waiting => Icons.hourglass_top_rounded,
+      _ => switch (d.kind) {
+          DeliveryKind.memberRelay => Icons.cell_tower,
+          DeliveryKind.serverFetch => Icons.cloud_download_outlined,
+          DeliveryKind.hostFile => Icons.folder_shared_outlined,
+          DeliveryKind.serverFile => Icons.dns_outlined,
+          DeliveryKind.link => Icons.public,
+          DeliveryKind.jellyfin => Icons.video_library_outlined,
+        },
+    };
+
+/// Where the current media comes from and how it reaches the others:
+/// "Foxyz passes it on through the server", "3 through the server ·
+/// 4.1 MB/s, needs 2.3 MB/s" and a bar of the source's speed against the
+/// video's (past the mark: keeping up). Amber when slow or waiting, red
+/// when the source left.
+class SourceLine extends StatelessWidget {
+  final Delivery delivery;
+  const SourceLine({super.key, required this.delivery});
+
+  @override
+  Widget build(BuildContext context) {
+    final d = delivery;
+    final scheme = Theme.of(context).colorScheme;
+    final tone = _tone(d.state, scheme);
+    final detail = d.detail;
+    final headroom = d.state == SourceState.left ? null : d.headroom;
+    return Tooltip(
+      message: d.explain,
+      waitDuration: const Duration(milliseconds: 400),
+      child: Container(
+        key: const ValueKey('source-line'),
+        margin: const EdgeInsets.fromLTRB(12, 0, 12, 6),
+        padding: const EdgeInsets.fromLTRB(10, 8, 12, 8),
+        decoration: BoxDecoration(
+          color: d.state == SourceState.ok ? scheme.surfaceContainerHigh : tone.withValues(alpha: 0.12),
+          borderRadius: BorderRadius.circular(10),
+        ),
+        child: Row(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Padding(
+              padding: const EdgeInsets.only(top: 1),
+              child: Icon(_icon(d), size: 18, color: tone),
+            ),
+            const SizedBox(width: 10),
+            Expanded(
+              child: Column(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text(d.title, style: const TextStyle(fontSize: 13, fontWeight: FontWeight.w600)),
+                  if (detail.isNotEmpty) ...[
+                    const SizedBox(height: 2),
+                    Text(detail, style: TextStyle(fontSize: 11.5, color: scheme.onSurfaceVariant)),
+                  ],
+                  if (headroom != null) ...[
+                    const SizedBox(height: 6),
+                    _HeadroomBar(headroom: headroom, slow: d.state == SourceState.slow),
+                  ],
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+/// The source's speed on a scale to twice the video's bitrate; the mark
+/// in the middle is what the video needs.
+class _HeadroomBar extends StatelessWidget {
+  final double headroom;
+  final bool slow;
+  const _HeadroomBar({required this.headroom, required this.slow});
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    final fill = (headroom / 2).clamp(0.04, 1.0);
+    final color = slow ? Colors.amber : Colors.greenAccent.shade400;
+    return SizedBox(
+      key: const ValueKey('headroom-bar'),
+      height: 4,
+      child: LayoutBuilder(
+        builder: (context, box) => Stack(
+          children: [
+            Positioned.fill(
+              child: DecoratedBox(
+                decoration: BoxDecoration(
+                  color: scheme.outlineVariant.withValues(alpha: 0.4),
+                  borderRadius: BorderRadius.circular(2),
+                ),
+              ),
+            ),
+            AnimatedContainer(
+              duration: easeTime,
+              curve: ease,
+              width: box.maxWidth * fill,
+              decoration: BoxDecoration(color: color, borderRadius: BorderRadius.circular(2)),
+            ),
+            Positioned(
+              left: box.maxWidth / 2 - 0.75,
+              top: -1,
+              bottom: -1,
+              child: Container(width: 1.5, color: scheme.onSurface.withValues(alpha: 0.7)),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+/// A member's buffer at a glance: green enough to play on, amber low,
+/// red empty while playing.
+Color healthColor(BufferHealth h) => switch (h) {
+      BufferHealth.good => Colors.greenAccent.shade400,
+      BufferHealth.low => Colors.amber,
+      BufferHealth.starving => Colors.redAccent.shade200,
+    };
+
+/// The members card's subtitle: [status] ("ready"), then how the member
+/// gets the media (the source's own pill says it serves it), after a dot
+/// coloured by its buffer; the hover says how much it has buffered.
+class DeliveryStatus extends StatelessWidget {
+  final String status;
+  final MemberDelivery? delivery;
+  const DeliveryStatus({super.key, required this.status, this.delivery});
+
+  @override
+  Widget build(BuildContext context) {
+    final d = delivery;
+    final route = d == null || d.route == DeliveryRoute.source ? '' : d.short;
+    final text = Text([status, if (route.isNotEmpty) route].join(' · '),
+        maxLines: 1, overflow: TextOverflow.ellipsis);
+    if (d == null) return text;
+    final health = d.health;
+    return Tooltip(
+      message: d.detail,
+      waitDuration: const Duration(milliseconds: 400),
+      child: Row(
+        children: [
+          if (health != null) ...[
+            AnimatedContainer(
+              key: const ValueKey('health-dot'),
+              duration: easeTime,
+              curve: ease,
+              width: 7,
+              height: 7,
+              decoration: BoxDecoration(color: healthColor(health), shape: BoxShape.circle),
+            ),
+            const SizedBox(width: 6),
+          ],
+          Flexible(child: text),
+        ],
+      ),
+    );
+  }
+}

apps/desktop/lib/src/shell/handoff.dart

@@ -0,0 +1,212 @@
+import 'dart:io';
+
+import 'package:flutter/material.dart';
+
+import '../files/scanner.dart' show FileKind, kindOf;
+import '../files/ui/file_tiles.dart' show baseName;
+
+// Something handed to the app, by a drop or by Ctrl+V outside a text
+// field: what it is ([classifyHandoff], pure) and the small card that asks
+// how to open it ([HandoffCard]). The shell wires both.
+
+/// Open overlays over the shell that take drops and pastes themselves
+/// (the Up next popover, which is not a route): the shell's own handoff
+/// stays off while any is open.
+int handoffHolds = 0;
+
+/// What was dropped or pasted.
+sealed class Handoff {
+  const Handoff();
+}
+
+/// Video files (by the Files page's extensions), in the order given.
+final class HandoffVideos extends Handoff {
+  final List<String> paths;
+  const HandoffVideos(this.paths);
+}
+
+final class HandoffFolder extends Handoff {
+  final String path;
+  const HandoffFolder(this.path);
+}
+
+/// An http(s) link.
+final class HandoffLink extends Handoff {
+  final String url;
+  const HandoffLink(this.url);
+}
+
+/// An image file. Nothing takes one yet; the shell ignores it.
+final class HandoffImage extends Handoff {
+  final String path;
+  const HandoffImage(this.path);
+}
+
+final class HandoffNothing extends Handoff {
+  const HandoffNothing();
+}
+
+const _imageExtensions = {'png', 'jpg', 'jpeg', 'webp', 'gif', 'bmp'};
+
+final _link = RegExp(r'^https?://\S+$', caseSensitive: false);
+final _windowsAbsolute = RegExp(r'^([A-Za-z]:[\\/]|\\\\)');
+
+bool _absolute(String p) => p.startsWith('/') || _windowsAbsolute.hasMatch(p);
+
+/// A `file://` URI as a path; anything else as is.
+String _pathOf(String p) {
+  if (!p.startsWith('file://')) return p;
+  try {
+    return Uri.parse(p).toFilePath();
+  } catch (_) {
+    return p;
+  }
+}
+
+/// Classifies dropped or pasted [paths] (files first) or, when there are
+/// none, pasted [text]: a link, or one absolute path (or `file://` URI) per
+/// line. Videos win over folders, folders over images; paths that do not
+/// exist ([typeOf], defaults to the file system) count for nothing.
+Handoff classifyHandoff({
+  List<String> paths = const [],
+  String? text,
+  FileSystemEntityType Function(String path)? typeOf,
+}) {
+  final type = typeOf ?? (p) => FileSystemEntity.typeSync(p);
+  var list = [for (final p in paths) if (p.trim().isNotEmpty) _pathOf(p.trim())];
+  if (list.isEmpty && text != null) {
+    final t = text.trim();
+    if (_link.hasMatch(t)) return HandoffLink(t);
+    final lines = [for (final l in t.split(RegExp(r'[\r\n]+'))) if (l.trim().isNotEmpty) _pathOf(l.trim())];
+    if (lines.isEmpty || !lines.every(_absolute)) return const HandoffNothing();
+    list = lines;
+  }
+  final types = {for (final p in list) p: type(p)};
+  bool file(String p) => types[p] == FileSystemEntityType.file;
+  final videos = [for (final p in list) if (file(p) && kindOf(p) == FileKind.video) p];
+  if (videos.isNotEmpty) return HandoffVideos(videos);
+  for (final p in list) {
+    if (types[p] == FileSystemEntityType.directory) return HandoffFolder(p);
+  }
+  for (final p in list) {
+    final dot = p.lastIndexOf('.');
+    if (file(p) && dot >= 0 && _imageExtensions.contains(p.substring(dot + 1).toLowerCase())) {
+      return HandoffImage(p);
+    }
+  }
+  return const HandoffNothing();
+}
+
+/// What the card's buttons ask the shell to do.
+enum HandoffAction {
+  /// Put the (first) video up (offline: watch it solo).
+  putUp,
+  /// Add the video's folder (or the folder) to Files and open it.
+  addFolder,
+  /// Open Library → Link with the URL filled.
+  openLink,
+  /// Add the videos (or the link, in the Link page's mode) to Up next.
+  queue,
+  /// The same, right after what plays.
+  playNext,
+}
+
+/// The card asking how to open a [Handoff] (videos, a folder or a link);
+/// pops the [HandoffAction] chosen.
+class HandoffCard extends StatelessWidget {
+  final Handoff item;
+  /// Nobody else watches (offline or solo): videos play, no relay talk.
+  final bool solo;
+  /// In a server: videos and links can go to Up next.
+  final bool queue;
+  const HandoffCard({super.key, required this.item, required this.solo, this.queue = false});
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    void pick(HandoffAction a) => Navigator.of(context).pop(a);
+    Widget button(HandoffAction a, IconData icon, String label, {bool primary = false}) => primary
+        ? FilledButton.icon(
+            key: ValueKey('handoff-${a.name}'), onPressed: () => pick(a), icon: Icon(icon, size: 18), label: Text(label))
+        : OutlinedButton.icon(
+            key: ValueKey('handoff-${a.name}'), onPressed: () => pick(a), icon: Icon(icon, size: 18), label: Text(label));
+    final many = switch (item) { HandoffVideos(:final paths) => paths.length > 1, _ => false };
+    final queueButtons = [
+      if (queue) ...[
+        button(HandoffAction.queue, Icons.playlist_add_rounded, many ? 'Add all to queue' : 'Add to queue'),
+        button(HandoffAction.playNext, Icons.queue_play_next_rounded, many ? 'Play all next' : 'Play next'),
+      ],
+    ];
+
+    final (IconData icon, String title, String detail, List<Widget> buttons) = switch (item) {
+      HandoffVideos(:final paths) => (
+          Icons.movie_outlined,
+          baseName(paths.first),
+          paths.length > 1 ? 'and ${paths.length - 1} more · the first one goes up' : 'A video on this computer',
+          [
+            button(HandoffAction.putUp, Icons.play_arrow, solo ? 'Play' : 'Put it up', primary: true),
+            ...queueButtons,
+            button(HandoffAction.addFolder, Icons.create_new_folder_outlined, 'Add its folder to Files'),
+          ],
+        ),
+      HandoffFolder(:final path) => (
+          Icons.folder_outlined,
+          baseName(path),
+          path,
+          [button(HandoffAction.addFolder, Icons.create_new_folder_outlined, 'Add to Files', primary: true)],
+        ),
+      HandoffLink(:final url) => (
+          Icons.link,
+          url,
+          solo ? 'Opens it on the Link page' : 'Pick how the others get it on the Link page',
+          [
+            button(HandoffAction.openLink, Icons.link, solo ? 'Open in Link' : 'Put it up as a link…',
+                primary: true),
+            ...queueButtons,
+          ],
+        ),
+      HandoffImage() || HandoffNothing() => (Icons.help_outline, '', '', const <Widget>[]),
+    };
+    return Material(
+      key: const ValueKey('handoff-card'),
+      elevation: 12,
+      color: scheme.surfaceContainer,
+      borderRadius: BorderRadius.circular(18),
+      child: ConstrainedBox(
+        constraints: const BoxConstraints(maxWidth: 380),
+        child: Padding(
+          padding: const EdgeInsets.fromLTRB(18, 16, 18, 16),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            crossAxisAlignment: CrossAxisAlignment.start,
+            children: [
+              Row(
+                children: [
+                  Icon(icon, color: scheme.primary),
+                  const SizedBox(width: 10),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(title,
+                            maxLines: 2,
+                            overflow: TextOverflow.ellipsis,
+                            style: Theme.of(context).textTheme.titleSmall),
+                        Text(detail,
+                            maxLines: 2,
+                            overflow: TextOverflow.ellipsis,
+                            style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12)),
+                      ],
+                    ),
+                  ),
+                ],
+              ),
+              const SizedBox(height: 14),
+              Wrap(spacing: 8, runSpacing: 8, children: buttons),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

apps/desktop/lib/src/shell/library_link.dart

@@ -1,11 +1,15 @@
 import 'dart:async';
 import 'dart:convert';
-import 'dart:io';
 
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
+import 'package:sync_relay_core/core.dart'
+    show LinkProbe, hasMediaExtension, parseJellyfinLink, playErrorText, unreachableText;
 
+import '../playback/yt_dlp_app.dart';
 import '../screens/home/media_picker.dart';
+import '../widgets/app_menu.dart';
+import '../widgets/copy_open.dart';
 import '../state/connect_prefs.dart';
 import 'motion.dart';
 
@@ -20,20 +24,33 @@ class RecentLink {
   final String url;
   final String title;
   final String? thumbnail;
+  /// The preview's second line ("youtube.com · Channel · 3:07"); null for
+  /// links kept before it was.
+  final String? subtitle;
   final DateTime at;
-  const RecentLink({required this.url, required this.title, this.thumbnail, required this.at});
+  const RecentLink({required this.url, required this.title, this.thumbnail, this.subtitle, required this.at});
 
-  Map<String, Object?> toJson() =>
-      {'url': url, 'title': title, 'thumb': ?thumbnail, 'at': at.millisecondsSinceEpoch};
+  /// What it showed when put up (the host for a second line, when older).
+  LinkPreview get preview =>
+      LinkPreview(title: title, subtitle: subtitle ?? _host(Uri.tryParse(url) ?? Uri()), thumbnail: thumbnail);
+
+  Map<String, Object?> toJson() => {
+        'url': url,
+        'title': title,
+        'thumb': ?thumbnail,
+        'sub': ?subtitle,
+        'at': at.millisecondsSinceEpoch,
+      };
 
   static RecentLink? fromJson(Object? j) {
     if (j is! Map) return null;
-    final url = j['url'], title = j['title'], at = j['at'], thumb = j['thumb'];
+    final url = j['url'], title = j['title'], at = j['at'], thumb = j['thumb'], sub = j['sub'];
     if (url is! String || url.isEmpty) return null;
     return RecentLink(
       url: url,
       title: title is String && title.isNotEmpty ? title : LinkMedia(url).label,
       thumbnail: thumb is String && thumb.isNotEmpty ? thumb : null,
+      subtitle: sub is String && sub.isNotEmpty ? sub : null,
       at: DateTime.fromMillisecondsSinceEpoch(at is int ? at : 0),
     );
   }
@@ -59,13 +76,18 @@ List<RecentLink> decodeRecentLinks(Object? raw) {
 class RecentLinks {
   static final RecentLinks instance = RecentLinks();
 
-  RecentLinks({Future<Object?> Function()? read, Future<void> Function(String value)? write})
+  /// [read] / [write] given (tests): [previews] defaults to one kept in
+  /// memory only.
+  RecentLinks({Future<Object?> Function()? read, Future<void> Function(String value)? write, LinkPreviewStore? previews})
       : _read = read ?? _hiveRead,
-        _write = write ?? _hiveWrite;
+        _write = write ?? _hiveWrite,
+        previews = previews ?? (read == null && write == null ? LinkPreviewStore() : LinkPreviewStore.memory());
 
   final Future<Object?> Function() _read;
   final Future<void> Function(String value) _write;
   final links = ValueNotifier<List<RecentLink>>(const []);
+  /// What links pasted or put up before turned out to be.
+  final LinkPreviewStore previews;
   Future<void>? _load;
 
   static Future<Object?> _hiveRead() async =>
@@ -106,52 +128,176 @@ class LinkPreview {
   /// "youtube.com · Channel", or the host.
   final String subtitle;
   final String? thumbnail;
-  const LinkPreview({required this.title, required this.subtitle, this.thumbnail});
+  /// Why this computer cannot open it, in plain words ([LinkProbe.problem]);
+  /// null when it looks playable.
+  final String? problem;
+  const LinkPreview({required this.title, required this.subtitle, this.thumbnail, this.problem});
+
+  /// Display text only: never a cookie or a resolved stream URL.
+  Map<String, Object?> toJson() => {'title': title, 'sub': subtitle, 'thumb': ?thumbnail};
+
+  static LinkPreview? fromJson(Object? j) {
+    if (j is! Map) return null;
+    final title = j['title'], sub = j['sub'], thumb = j['thumb'];
+    if (title is! String || title.isEmpty || sub is! String) return null;
+    return LinkPreview(title: title, subtitle: sub, thumbnail: thumb is String && thumb.isNotEmpty ? thumb : null);
+  }
 }
 
-/// GET [uri] and return the body (oEmbed).
-typedef OEmbedGetter = Future<String> Function(Uri uri);
+/// A [LinkPreview] kept, and when it was found.
+typedef StoredLinkPreview = ({LinkPreview preview, DateTime at});
 
-Future<String> defaultOEmbedGet(Uri uri) async {
-  final client = HttpClient()..connectionTimeout = const Duration(seconds: 6);
+/// How long a kept preview is shown as is; older, it is shown and
+/// refreshed quietly behind it.
+const linkPreviewFreshFor = Duration(days: 1);
+
+const _keyLinkPreviews = 'linkPreviews';
+
+/// What links turned out to be, by URL, so a link pasted or picked again
+/// shows its preview at once instead of waiting seconds for yt-dlp. Only
+/// links that looked playable, at most [maxEntries] (the oldest go), in
+/// the `connect_form` box. Display text only ([LinkPreview.toJson]).
+class LinkPreviewStore {
+  static const maxEntries = 200;
+
+  LinkPreviewStore({Future<Object?> Function()? read, Future<void> Function(String value)? write})
+      : _read = read ?? _hiveRead,
+        _write = write ?? _hiveWrite;
+
+  /// Kept in memory only.
+  LinkPreviewStore.memory()
+      : _read = _none,
+        _write = _drop;
+
+  final Future<Object?> Function() _read;
+  final Future<void> Function(String value) _write;
+  // Oldest first (insertion order); a put moves an entry to the end.
+  final _entries = <String, StoredLinkPreview>{};
+  Future<void>? _load;
+
+  static Future<Object?> _none() async => null;
+  static Future<void> _drop(String _) async {}
+
+  static Future<Object?> _hiveRead() async =>
+      (connectFormBoxIfOpen() ?? await openConnectFormBox()).get(_keyLinkPreviews);
+
+  static Future<void> _hiveWrite(String value) async =>
+      (connectFormBoxIfOpen() ?? await openConnectFormBox()).put(_keyLinkPreviews, value);
+
+  Future<void> ensureLoaded() => _load ??= () async {
         try {
-    final req = await client.getUrl(uri);
-    final res = await req.close().timeout(const Duration(seconds: 8));
-    if (res.statusCode != 200) throw HttpException('status ${res.statusCode}', uri: uri);
-    return await res.transform(utf8.decoder).join().timeout(const Duration(seconds: 8));
-  } finally {
-    client.close(force: true);
+          final raw = await _read();
+          final j = raw is String ? jsonDecode(raw) : raw;
+          if (j is! Map) return;
+          final read = <String, StoredLinkPreview>{};
+          for (final e in j.entries) {
+            final v = e.value;
+            final p = LinkPreview.fromJson(v);
+            if (e.key is! String || p == null || v is! Map) continue;
+            final at = v['at'];
+            read[e.key as String] = (preview: p, at: DateTime.fromMillisecondsSinceEpoch(at is int ? at : 0));
+          }
+          // Something found meanwhile is newer.
+          final sorted = read.entries.toList()..sort((a, b) => a.value.at.compareTo(b.value.at));
+          final mine = Map.of(_entries);
+          _entries
+            ..clear()
+            ..addEntries(sorted.where((e) => !mine.containsKey(e.key)))
+            ..addAll(mine);
+        } catch (e) {
+          debugPrint('load link previews failed: $e');
+        }
+      }();
+
+  /// [url]'s kept preview, if any (after [ensureLoaded]).
+  StoredLinkPreview? lookup(String url) => _entries[url];
+
+  /// Keeps [preview] of [url] when it looked playable; one with a problem
+  /// forgets what was kept. Loads first, so a save never drops what is on
+  /// disk.
+  Future<void> put(String url, LinkPreview preview, {DateTime? at}) async {
+    await ensureLoaded();
+    _entries.remove(url);
+    if (preview.problem == null) _entries[url] = (preview: preview, at: at ?? DateTime.now());
+    while (_entries.length > maxEntries) {
+      _entries.remove(_entries.keys.first);
+    }
+    await _save();
+  }
+
+  Future<void> _save() async {
+    try {
+      await _write(jsonEncode({
+        for (final e in _entries.entries) e.key: {...e.value.preview.toJson(), 'at': e.value.at.millisecondsSinceEpoch},
+      }));
+    } catch (e) {
+      debugPrint('save link previews failed: $e');
+    }
   }
 }
 
-bool isYouTubeLink(Uri uri) {
-  final h = uri.host.toLowerCase();
-  return h == 'youtu.be' || h == 'youtube.com' || h.endsWith('.youtube.com');
-}
+/// What a link is (see [AppYtDlp.probe]).
+typedef LinkProber = Future<LinkProbe> Function(String url);
+
+Future<LinkProbe> defaultLinkProber(String url) => AppYtDlp.instance.probe(url);
 
 String _host(Uri uri) => uri.host.startsWith('www.') ? uri.host.substring(4) : uri.host;
 
-/// The preview of [url]: YouTube links ask YouTube's oEmbed for the title,
-/// channel and thumbnail; anything else (or a failed lookup) shows the
-/// file name and host. Null for text that is not an http(s) link.
-Future<LinkPreview?> previewLink(String url, {OEmbedGetter get = defaultOEmbedGet}) async {
+/// "3:07", "1:02:03".
+String clockText(double seconds) {
+  final s = seconds.round();
+  final h = s ~/ 3600, m = s % 3600 ~/ 60, sec = (s % 60).toString().padLeft(2, '0');
+  return h > 0 ? '$h:${m.toString().padLeft(2, '0')}:$sec' : '$m:$sec';
+}
+
+/// The preview of [url]: a web page shows yt-dlp's title, uploader,
+/// duration and thumbnail; a media file its file name and host; a link
+/// that does not open, why ([LinkPreview.problem]). Null for text that is
+/// not an http(s) link.
+Future<LinkPreview?> previewLink(String url, {LinkProber probe = defaultLinkProber}) async {
   final uri = Uri.tryParse(url.trim());
   if (uri == null || !(uri.scheme == 'http' || uri.scheme == 'https') || uri.host.isEmpty) return null;
-  final plain = LinkPreview(title: LinkMedia(url.trim()).label, subtitle: _host(uri));
-  if (!isYouTubeLink(uri)) return plain;
+  final host = _host(uri);
+  // A Jellyfin item goes up as the item (see `mediaForLink`), not the page.
+  if (parseJellyfinLink(url.trim()) != null) return LinkPreview(title: host, subtitle: '$host · Jellyfin');
+  final file = hasMediaExtension(uri);
+  final LinkProbe p;
   try {
-    final body = await get(Uri.https('www.youtube.com', '/oembed', {'url': url.trim(), 'format': 'json'}));
-    final j = jsonDecode(body);
-    if (j is! Map || j['title'] is! String) return plain;
-    final author = j['author_name'];
-    return LinkPreview(
-      title: j['title'] as String,
-      subtitle: [_host(uri), if (author is String && author.isNotEmpty) author].join(' · '),
-      thumbnail: j['thumbnail_url'] is String ? j['thumbnail_url'] as String : null,
-    );
-  } catch (_) {
-    return plain;
+    p = await probe(url.trim());
+  } catch (e) {
+    final problem = playErrorText('$e');
+    return LinkPreview(title: LinkMedia(url.trim()).label, subtitle: '$host · $problem', problem: problem);
   }
+  final info = p.info;
+  if (!p.isPage) return LinkPreview(title: LinkMedia(url.trim()).label, subtitle: host);
+  final problem = p.problem;
+  if (info == null || problem != null) {
+    // A media file name that did not answer as one keeps its name.
+    final title = file ? LinkMedia(url.trim()).label : p.title ?? host;
+    return LinkPreview(title: title, subtitle: '$host · ${problem ?? 'Not a video'}', problem: problem);
+  }
+  return LinkPreview(
+    title: p.title ?? host,
+    subtitle: [
+      host,
+      if (info.uploader.isNotEmpty) info.uploader,
+      if (info.duration case final d? when d > 0) clockText(d),
+    ].join(' · '),
+    thumbnail: info.thumbnail,
+  );
+}
+
+/// [url]'s preview at once when it was kept before ([LinkPreviewStore]),
+/// else probed and kept (the Up next popover's paste; the Link page has
+/// its own refresh rules).
+Future<LinkPreview?> cachedLinkPreview(String url, {RecentLinks? recents, LinkProber probe = defaultLinkProber}) async {
+  final store = (recents ?? RecentLinks.instance).previews;
+  await store.ensureLoaded();
+  final kept = store.lookup(url);
+  if (kept != null) return kept.preview;
+  final p = await previewLink(url, probe: probe);
+  if (p != null && parseJellyfinLink(url) == null) unawaited(store.put(url, p));
+  return p;
 }
 
 /// "today", "yesterday", "3 days ago", "last week", "5 weeks ago", ...
@@ -168,7 +314,17 @@ String agoText(DateTime at, DateTime now) {
 
 // -------------------------------------------------------------- widget
 
-const _modes = [
+// Through me is the default and the main choice: it plays whatever this
+// computer can open, and nobody can tell ahead which sites will want
+// sign-in cookies (YouTube may start asking any day). The other two sit
+// behind "Other ways".
+const _main = (
+  LinkRelay.me,
+  Icons.cell_tower,
+  'Through me',
+  'Your computer opens it and passes it on, so it plays for everyone whenever it plays for you.'
+);
+const _others = [
   (LinkRelay.direct, Icons.groups_outlined, 'Everyone fetches it', 'Each app plays the link itself.'),
   (
     LinkRelay.server,
@@ -176,7 +332,6 @@ const _modes = [
     'Server fetches it',
     'Downloaded once by the server. For links slow or blocked for some.'
   ),
-  (LinkRelay.me, Icons.cell_tower, 'Through me', 'Your computer passes it on. For links only you can open.'),
 ];
 
 String linkRelayHelp(LinkRelay r) => switch (r) {
@@ -188,21 +343,28 @@ String linkRelayHelp(LinkRelay r) => switch (r) {
           'while it plays; the link is not shown to anyone.',
     };
 
-/// The Link source. [offlineHint] set: the button is off and says why.
+/// Under Play when nobody else watches.
+const soloPlayHint = 'Plays just for you. Invite friends any time; it keeps playing.';
+
+/// The Link source. [solo]: nobody else watches (offline or solo), so the
+/// button says Play and there are no relay modes (the link plays direct).
 class LibraryLinkSource extends StatefulWidget {
   final MediaPickerController controller;
-  final String? offlineHint;
+  final bool solo;
   /// Puts the link up; returns an error text, or null when sent.
   final Future<String?> Function(LinkMedia media) onPutUp;
+  /// Adds the link to Up next in the chosen mode; null: no server.
+  final AddToQueue? onAddToQueue;
   final RecentLinks recents;
-  final OEmbedGetter oembed;
+  final LinkProber probe;
   const LibraryLinkSource({
     super.key,
     required this.controller,
     required this.onPutUp,
+    this.onAddToQueue,
     required this.recents,
-    this.offlineHint,
-    this.oembed = defaultOEmbedGet,
+    this.solo = false,
+    this.probe = defaultLinkProber,
   });
 
   @override
@@ -216,6 +378,12 @@ class _LibraryLinkSourceState extends State<LibraryLinkSource> {
   Timer? _debounce;
   bool _busy = false;
   String? _error;
+  /// [_error] is the probe's problem: "Put it up anyway" is offered.
+  bool _canForce = false;
+  /// "Other ways" opened (always shown while one of them is picked).
+  bool _otherWays = false;
+
+  LinkPreviewStore get _store => widget.recents.previews;
 
   @override
   void initState() {
@@ -223,6 +391,10 @@ class _LibraryLinkSourceState extends State<LibraryLinkSource> {
     widget.recents.ensureLoaded();
     _c.link.addListener(_typed);
     _typed();
+    // A link already in the field may have been seen before.
+    _store.ensureLoaded().then((_) {
+      if (mounted && _c.link.text.trim() == _previewUrl) _preview(_previewUrl);
+    });
   }
 
   @override
@@ -236,19 +408,70 @@ class _LibraryLinkSourceState extends State<LibraryLinkSource> {
     final url = _c.link.text.trim();
     if (url == _previewUrl) return;
     _debounce?.cancel();
+    // Seen before (picked from Recent, pasted again): at once.
+    if (_previews.containsKey(url) || _known(url) != null) {
+      _preview(url);
+    } else {
       _debounce = Timer(const Duration(milliseconds: 350), () => _preview(url));
-    if (mounted) setState(() => _error = null);
+    }
+    if (mounted) {
+      setState(() {
+        _error = null;
+        _canForce = false;
+      });
+    }
   }
 
+  /// What [url] was found to be before: the kept preview, else what its
+  /// Recent card showed.
+  StoredLinkPreview? _known(String url) {
+    if (url.isEmpty) return null;
+    final kept = _store.lookup(url);
+    if (kept != null) return kept;
+    for (final l in widget.recents.links.value) {
+      if (l.url == url) return (preview: l.preview, at: l.at);
+    }
+    return null;
+  }
+
+  /// The preview of [url]: from this page's memory, else kept from before
+  /// (refreshed quietly once older than [linkPreviewFreshFor]), else
+  /// probed (yt-dlp takes seconds).
   Future<void> _preview(String url) async {
     _previewUrl = url;
     if (url.isEmpty || _previews.containsKey(url)) {
       if (mounted) setState(() {});
       return;
     }
-    final p = await previewLink(url, get: widget.oembed);
-    _previews[url] = p;
+    final known = _known(url);
+    if (known != null) {
+      _previews[url] = known.preview;
       if (mounted) setState(() {});
+      if (DateTime.now().difference(known.at) > linkPreviewFreshFor) unawaited(_refresh(url));
+      return;
+    }
+    final p = await previewLink(url, probe: widget.probe);
+    _previews[url] = p;
+    _keep(url, p);
+    if (mounted) setState(() {});
+  }
+
+  /// Probes [url] again behind what is shown; a site out of reach keeps
+  /// what was found before. Returns the preview shown afterwards.
+  Future<LinkPreview?> _refresh(String url) async {
+    final p = await previewLink(url, probe: widget.probe);
+    if (p == null || p.problem == unreachableText) return _previews[url];
+    _previews[url] = p;
+    _keep(url, p);
+    if (mounted) setState(() {});
+    return p;
+  }
+
+  /// Keeps what [url] turned out to be for next time (a Jellyfin link's
+  /// preview needs no probe).
+  void _keep(String url, LinkPreview? p) {
+    if (p == null || parseJellyfinLink(url) != null) return;
+    unawaited(_store.put(url, p));
   }
 
   Future<void> _paste() async {
@@ -258,40 +481,140 @@ class _LibraryLinkSourceState extends State<LibraryLinkSource> {
     } catch (_) {}
   }
 
-  Future<void> _go() async {
+  Future<void> _go({bool anyway = false}) async {
     final url = _c.link.text.trim();
-    if (url.isEmpty || _busy || widget.offlineHint != null) return;
+    if (url.isEmpty || _busy) return;
     setState(() {
       _busy = true;
       _error = null;
+      _canForce = false;
     });
-    String? error;
+    // What the probe found refuses it here, with "Put it up anyway": the
+    // server or a friend (with cookies) may still open it.
+    final problem = anyway ? null : (_previews[url] ?? await previewLink(url, probe: widget.probe))?.problem;
+    String? error = problem;
+    if (problem == null) {
       try {
-      error = await widget.onPutUp(LinkMedia(url, relay: _c.linkRelay));
+        error = await widget.onPutUp(
+            LinkMedia(url, relay: widget.solo ? LinkRelay.direct : _c.linkRelay, anyway: anyway));
       } catch (e) {
         error = '$e';
       }
+    }
+    var canForce = problem != null;
+    if (error != null && problem == null && !anyway) {
+      // The kept preview said it plays but it did not: show what it is now
+      // (the put-up just probed it, so this is quick), "anyway" if refused.
+      canForce = (await _refresh(url))?.problem != null;
+    }
     if (error == null) {
-      final p = _previews[url] ?? await previewLink(url, get: widget.oembed);
+      var p = _previews[url];
+      if (p == null) {
+        p = _previews[url] = await previewLink(url, probe: widget.probe);
+        _keep(url, p);
+      }
       unawaited(widget.recents.add(RecentLink(
         url: url,
         title: p?.title ?? LinkMedia(url).label,
         thumbnail: p?.thumbnail,
+        subtitle: p?.problem == null ? p?.subtitle : null,
         at: DateTime.now(),
       )));
     }
     if (!mounted) return;
+    setState(() {
+      _busy = false;
+      _error = error;
+      _canForce = canForce;
+    });
+  }
+
+  /// "Add to queue" (or, from a recent card's menu, [url] and [next]):
+  /// the link in the chosen mode; the probe refuses what will not play.
+  Future<void> _queue({String? url, bool next = false}) async {
+    final add = widget.onAddToQueue;
+    final link = url ?? _c.link.text.trim();
+    if (add == null || link.isEmpty || _busy) return;
+    setState(() {
+      _busy = true;
+      _error = null;
+      _canForce = false;
+    });
+    String? error;
+    try {
+      error = await add(LinkMedia(link, relay: widget.solo ? LinkRelay.direct : _c.linkRelay), next: next);
+    } catch (e) {
+      error = '$e';
+    }
+    if (!mounted) return;
     setState(() {
       _busy = false;
       _error = error;
     });
   }
 
+  /// Right-click on a recent link: put it up or queue it, copy or open it.
+  Future<void> _recentMenu(BuildContext context, RecentLink l) async {
+    final pick = await showAppMenu<String>(context, items: [
+      AppMenuItem(value: 'up', label: widget.solo ? 'Play' : 'Put it up'),
+      if (widget.onAddToQueue != null) ...const [
+        AppMenuItem(value: 'queue', label: 'Add to queue'),
+        AppMenuItem(value: 'next', label: 'Play next'),
+      ],
+      const AppMenuItem(value: 'copy', label: ReuseText.copyLink),
+      const AppMenuItem(value: 'title', label: ReuseText.copyTitle),
+      const AppMenuItem(value: 'open', label: ReuseText.openInBrowser),
+    ]);
+    if (pick == null || !mounted) return;
+    switch (pick) {
+      case 'copy':
+        return copyToClipboard(l.url, done: 'Link copied');
+      case 'title':
+        return copyToClipboard(l.title, done: 'Title copied');
+      case 'open':
+        return openLink(l.url);
+    }
+    _c.link.text = l.url;
+    switch (pick) {
+      case 'up':
+        await _go();
+      case 'queue' || 'next':
+        await _queue(url: l.url, next: pick == 'next');
+    }
+  }
+
+  /// Right-click on the preview: copy or open the link.
+  Future<void> _previewMenu(BuildContext context, String url, LinkPreview? p) async {
+    final pick = await showAppMenu<String>(context, items: [
+      const AppMenuItem(value: 'copy', label: ReuseText.copyLink),
+      if (p != null) const AppMenuItem(value: 'title', label: ReuseText.copyTitle),
+      const AppMenuItem(value: 'open', label: ReuseText.openInBrowser),
+    ]);
+    switch (pick) {
+      case 'copy':
+        await copyToClipboard(url, done: 'Link copied');
+      case 'title':
+        await copyToClipboard(p!.title, done: 'Title copied');
+      case 'open':
+        await openLink(url);
+    }
+  }
+
+  Widget _modeCard((LinkRelay, IconData, String, String) m, {bool compact = false}) => _ModeCard(
+        key: ValueKey('link-mode-${m.$1.name}'),
+        icon: m.$2,
+        title: m.$3,
+        sub: m.$4,
+        compact: compact,
+        selected: _c.linkRelay == m.$1,
+        onTap: () => setState(() => _c.linkRelay = m.$1),
+      );
+
   @override
   Widget build(BuildContext context) {
     final scheme = Theme.of(context).colorScheme;
     final t = Theme.of(context).textTheme;
-    final hint = widget.offlineHint;
+    final solo = widget.solo;
     final url = _c.link.text.trim();
     final preview = url.isEmpty ? null : _previews[url];
     final loading = url.isNotEmpty && !_previews.containsKey(url);
@@ -311,16 +634,32 @@ class _LibraryLinkSourceState extends State<LibraryLinkSource> {
     );
     final button = FilledButton.icon(
       key: const ValueKey('link-put-up'),
-      onPressed: url.isEmpty || _busy || hint != null ? null : _go,
+      onPressed: url.isEmpty || _busy ? null : _go,
       icon: _busy
           ? const SizedBox.square(dimension: 16, child: CircularProgressIndicator(strokeWidth: 2))
           : const Icon(Icons.play_arrow),
-      label: Text(hint == null ? 'Put it up' : 'Play'),
+      label: Text(solo ? 'Play' : 'Put it up'),
       style: FilledButton.styleFrom(
         minimumSize: const Size(0, 56),
         shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
       ),
     );
+    final queue = widget.onAddToQueue == null
+        ? null
+        : Tooltip(
+            message: 'Plays after what is on now (right-click a recent link for Play next)',
+            waitDuration: const Duration(milliseconds: 600),
+            child: OutlinedButton.icon(
+              key: const ValueKey('link-add-queue'),
+              onPressed: url.isEmpty || _busy ? null : () => _queue(),
+              icon: const Icon(Icons.playlist_add_rounded),
+              label: const Text('Add to queue'),
+              style: OutlinedButton.styleFrom(
+                minimumSize: const Size(0, 56),
+                shape: RoundedRectangleBorder(borderRadius: BorderRadius.circular(16)),
+              ),
+            ),
+          );
 
     return SingleChildScrollView(
       key: const ValueKey('media-link'),
@@ -346,7 +685,7 @@ class _LibraryLinkSourceState extends State<LibraryLinkSource> {
               Text('Watch from a link', textAlign: TextAlign.center, style: t.headlineSmall),
               const SizedBox(height: 6),
               Text(
-                'A video file, YouTube, a Jellyfin link… Ctrl+V anywhere pastes it here.',
+                'A video file, a page (YouTube, X, …) or a Jellyfin link. Ctrl+V or drop it anywhere to bring it here.',
                 textAlign: TextAlign.center,
                 style: TextStyle(color: scheme.onSurfaceVariant),
               ),
@@ -357,17 +696,31 @@ class _LibraryLinkSourceState extends State<LibraryLinkSource> {
                         field,
                         const SizedBox(height: 10),
                         button,
+                        if (queue != null) ...[const SizedBox(height: 8), queue],
                       ])
-                    : Row(children: [Expanded(child: field), const SizedBox(width: 12), button]),
+                    : Row(children: [
+                        Expanded(child: field),
+                        const SizedBox(width: 12),
+                        button,
+                        if (queue != null) ...[const SizedBox(width: 8), queue],
+                      ]),
               ),
-              if (hint != null || _error != null) ...[
+              if (solo || _error != null) ...[
                 const SizedBox(height: 8),
                 Text(
-                  _error ?? hint!,
+                  _error ?? soloPlayHint,
                   key: const ValueKey('link-hint'),
                   textAlign: TextAlign.center,
                   style: t.bodySmall?.copyWith(color: _error != null ? scheme.error : Colors.grey),
                 ),
+                if (_canForce)
+                  Center(
+                    child: TextButton(
+                      key: const ValueKey('link-put-up-anyway'),
+                      onPressed: _busy ? null : () => _go(anyway: true),
+                      child: Text(solo ? 'Play it anyway' : 'Put it up anyway'),
+                    ),
+                  ),
               ],
               AnimatedSize(
                 duration: easeTime,
@@ -376,28 +729,58 @@ class _LibraryLinkSourceState extends State<LibraryLinkSource> {
                     ? const SizedBox(width: double.infinity)
                     : Padding(
                         padding: const EdgeInsets.only(top: 14),
+                        child: Builder(
+                          builder: (context) => GestureDetector(
+                            onSecondaryTap: () => _previewMenu(context, url, preview),
                             child: _PreviewCard(preview: preview, loading: loading),
                           ),
                         ),
-              if (hint == null) ...[
+                      ),
+              ),
+              if (!solo) ...[
                 const SizedBox(height: 28),
                 Text('How the others get it', style: t.titleSmall),
                 const SizedBox(height: 10),
-                LayoutBuilder(builder: (context, box) {
-                  final cards = [
-                    for (final m in _modes)
-                      _ModeCard(
-                        key: ValueKey('link-mode-${m.$1.name}'),
-                        icon: m.$2,
-                        title: m.$3,
-                        sub: m.$4,
-                        selected: _c.linkRelay == m.$1,
-                        onTap: () => setState(() => _c.linkRelay = m.$1),
+                _modeCard(_main),
+                const SizedBox(height: 6),
+                Builder(builder: (context) {
+                  final open = _otherWays || _c.linkRelay != LinkRelay.me;
+                  return Column(
+                    crossAxisAlignment: CrossAxisAlignment.start,
+                    children: [
+                      TextButton.icon(
+                        key: const ValueKey('link-other-ways'),
+                        // Closing while one of them is picked goes back to Through me.
+                        onPressed: () => setState(() {
+                          _otherWays = !open;
+                          if (open) _c.linkRelay = LinkRelay.me;
+                        }),
+                        style: TextButton.styleFrom(foregroundColor: scheme.onSurfaceVariant),
+                        iconAlignment: IconAlignment.end,
+                        icon: AnimatedRotation(
+                          turns: open ? 0.5 : 0,
+                          duration: easeTime,
+                          curve: ease,
+                          child: const Icon(Icons.keyboard_arrow_down_rounded, size: 18),
                         ),
-                  ];
+                        label: const Text('Other ways'),
+                      ),
+                      AnimatedSize(
+                        duration: easeTime,
+                        curve: ease,
+                        alignment: Alignment.topCenter,
+                        child: !open
+                            ? const SizedBox(width: double.infinity)
+                            : Padding(
+                                padding: const EdgeInsets.only(top: 4),
+                                child: LayoutBuilder(builder: (context, box) {
+                                  final cards = [for (final m in _others) _modeCard(m, compact: true)];
                                   if (box.maxWidth < 560) {
                                     return Column(children: [
-                      for (final (i, c) in cards.indexed) ...[if (i > 0) const SizedBox(height: 8), c],
+                                      for (final (i, c) in cards.indexed) ...[
+                                        if (i > 0) const SizedBox(height: 8),
+                                        c,
+                                      ],
                                     ]);
                                   }
                                   return IntrinsicHeight(
@@ -412,6 +795,11 @@ class _LibraryLinkSourceState extends State<LibraryLinkSource> {
                                     ),
                                   );
                                 }),
+                              ),
+                      ),
+                    ],
+                  );
+                }),
                 const SizedBox(height: 8),
                 Text(linkRelayHelp(_c.linkRelay), style: t.bodySmall?.copyWith(color: Colors.grey)),
               ],
@@ -421,7 +809,8 @@ class _LibraryLinkSourceState extends State<LibraryLinkSource> {
                     ? const SizedBox.shrink()
                     : Padding(
                         padding: const EdgeInsets.only(top: 32),
-                        child: _RecentGrid(recents: recents, onPick: (l) => _c.link.text = l.url),
+                        child: _RecentGrid(
+                            recents: recents, onPick: (l) => _c.link.text = l.url, onMenu: _recentMenu),
                       ),
               ),
             ],
@@ -470,9 +859,9 @@ class _PreviewCard extends StatelessWidget {
                       const SizedBox(height: 4),
                       Text(
                         p?.subtitle ?? 'Paste an http(s) address',
-                        maxLines: 1,
+                        maxLines: 2,
                         overflow: TextOverflow.ellipsis,
-                        style: const TextStyle(color: Colors.grey),
+                        style: TextStyle(color: p?.problem != null ? scheme.error : Colors.grey),
                       ),
                     ],
                   ),
@@ -504,6 +893,8 @@ class _ModeCard extends StatelessWidget {
   final IconData icon;
   final String title, sub;
   final bool selected;
+  /// A secondary choice: icon beside the title, a quieter card.
+  final bool compact;
   final VoidCallback onTap;
   const _ModeCard({
     super.key,
@@ -512,6 +903,7 @@ class _ModeCard extends StatelessWidget {
     required this.sub,
     required this.selected,
     required this.onTap,
+    this.compact = false,
   });
 
   @override
@@ -527,18 +919,23 @@ class _ModeCard extends StatelessWidget {
           duration: easeTime,
           curve: ease,
           width: double.infinity,
-          padding: const EdgeInsets.all(12),
+          padding: EdgeInsets.all(compact ? 10 : 14),
           decoration: BoxDecoration(
             color: selected ? scheme.primary.withValues(alpha: 0.10) : scheme.surfaceContainerLow,
             borderRadius: BorderRadius.circular(14),
             border: Border.all(color: selected ? scheme.primary : Colors.transparent, width: 2),
           ),
+          child: Row(
+            crossAxisAlignment: compact ? CrossAxisAlignment.start : CrossAxisAlignment.center,
+            children: [
+              Icon(icon, size: compact ? 20 : 24, color: selected ? scheme.primary : scheme.onSurfaceVariant),
+              SizedBox(width: compact ? 10 : 14),
+              Expanded(
                 child: Column(
                   crossAxisAlignment: CrossAxisAlignment.start,
                   children: [
-              Icon(icon, color: selected ? scheme.primary : scheme.onSurfaceVariant),
-              const SizedBox(height: 8),
-              Text(title, style: TextStyle(fontWeight: FontWeight.w600, color: selected ? scheme.primary : null)),
+                    Text(title,
+                        style: TextStyle(fontWeight: FontWeight.w600, color: selected ? scheme.primary : null)),
                     const SizedBox(height: 2),
                     Text(sub,
                         maxLines: 2,
@@ -547,6 +944,9 @@ class _ModeCard extends StatelessWidget {
                   ],
                 ),
               ),
+            ],
+          ),
+        ),
       ),
     );
   }
@@ -555,7 +955,9 @@ class _ModeCard extends StatelessWidget {
 class _RecentGrid extends StatelessWidget {
   final List<RecentLink> recents;
   final ValueChanged<RecentLink> onPick;
-  const _RecentGrid({required this.recents, required this.onPick});
+  /// Right-click: Put it up / Add to queue / Play next, copy or open it.
+  final void Function(BuildContext context, RecentLink link) onMenu;
+  const _RecentGrid({required this.recents, required this.onPick, required this.onMenu});
 
   @override
   Widget build(BuildContext context) {
@@ -580,9 +982,11 @@ class _RecentGrid extends StatelessWidget {
                   child: Tooltip(
                     message: l.url,
                     waitDuration: const Duration(milliseconds: 600),
-                    child: InkWell(
+                    // The card's own context: the menu opens at the card.
+                    child: Builder(builder: (context) => InkWell(
                       key: ValueKey('recent-link-${l.url}'),
                       onTap: () => onPick(l),
+                      onSecondaryTap: () => onMenu(context, l),
                       borderRadius: BorderRadius.circular(12),
                       child: Column(
                         crossAxisAlignment: CrossAxisAlignment.start,
@@ -609,7 +1013,7 @@ class _RecentGrid extends StatelessWidget {
                           ),
                         ],
                       ),
-                    ),
+                    )),
                   ),
                 ),
             ],

apps/desktop/lib/src/shell/library_tab.dart

@@ -1,7 +1,6 @@
 import 'dart:async';
 
 import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
 import 'package:signals/signals_flutter.dart';
 import 'package:sync_relay_core/core.dart' show HelloMedia, JellyfinException, JellyfinItem;
 
@@ -17,6 +16,7 @@ import '../screens/home/media_picker.dart';
 import '../state/session_state.dart';
 import 'library_link.dart';
 import 'motion.dart';
+import 'welcome.dart';
 
 /// What putting up a Jellyfin pick sends: its ref (no URL, no token).
 /// Throws [FormatException] with a user-facing message when the server is
@@ -59,9 +59,6 @@ String? nowPlayingFile(Map<String, Object?>? media, String lastPath) {
   return name == media['name'] ? lastPath : null;
 }
 
-/// Offline, nothing goes up; this says why.
-const offlinePutUpHint = 'Join or host to watch together';
-
 /// Window width under which the details panel floats over the library.
 const detailsDockFrom = 1000.0;
 
@@ -69,41 +66,48 @@ const detailsDockFrom = 1000.0;
 /// through), the Jellyfin library chips beside it, and the source below.
 /// Jellyfin cards select on click and open their details in a panel at
 /// the right (docked from [detailsDockFrom], floating over the library
-/// below it); a double-click or the panel's button puts it up. Offline
-/// everything browses and the play buttons say [offlinePutUpHint].
+/// below it); a double-click or the panel's button puts it up. With
+/// nobody else watching ([solo]: offline or a solo session) the buttons
+/// say Play and putting something up starts (or uses) a solo session.
 class LibraryTab extends StatefulWidget {
   final MediaPickerController controller;
   final JellyfinAccounts accounts;
-  final bool online;
+  final bool solo;
   /// This app hosts the server: its files stream from here directly.
   final bool isHost;
   final BrowseStart? jellyfinStart;
   /// Puts the pick up; returns an error text, or null when sent.
   final Future<String?> Function(PickedMedia media) onPutUp;
+  /// Adds a pick to Up next; null without a server (no queue actions).
+  final AddToQueue? onAddToQueue;
   final VoidCallback? onPutUpDone;
   final VoidCallback? onOpenIntegrations;
   /// Defaults to [RecentLinks.instance].
   final RecentLinks? recentLinks;
-  final OEmbedGetter oembed;
+  final LinkProber probe;
   /// The Files source (tests inject one); defaults to [FilesPage].
-  final Widget Function(BuildContext context, {required bool online, required bool relayed,
+  final Widget Function(BuildContext context, {required bool solo, required bool relayed,
       required Future<String?> Function(String path) onPlay, String? nowPlayingPath})? filesBuilder;
   /// Clock for the Jellyfin Continue row (tests pin it).
   final DateTime Function() now;
+  /// Over the source switch (the shell's welcome band while offline).
+  final Widget? banner;
   const LibraryTab({
     super.key,
     required this.controller,
     required this.accounts,
-    required this.online,
+    required this.solo,
     required this.isHost,
     required this.onPutUp,
+    this.onAddToQueue,
     this.onPutUpDone,
     this.jellyfinStart,
     this.onOpenIntegrations,
     this.recentLinks,
-    this.oembed = defaultOEmbedGet,
+    this.probe = defaultLinkProber,
     this.filesBuilder,
     this.now = DateTime.now,
+    this.banner,
   });
 
   @override
@@ -116,7 +120,6 @@ class _LibraryTabState extends State<LibraryTab> {
   JellyfinSelection? _shown;
 
   MediaPickerController get _c => widget.controller;
-  String? get _hint => widget.online ? null : offlinePutUpHint;
 
   @override
   void initState() {
@@ -164,7 +167,13 @@ class _LibraryTabState extends State<LibraryTab> {
 
   /// A Jellyfin card or episode: a series goes up as its next episode.
   Future<String?> _putUpJellyfin(JellyfinSelection sel) async {
-    if (!widget.online) return offlinePutUpHint;
+    final pick = await _jellyfinPick(sel);
+    return pick is JellyfinMedia ? _put(pick) : pick as String;
+  }
+
+  /// What a Jellyfin card stands for (a series: its next episode), or an
+  /// error text.
+  Future<Object> _jellyfinPick(JellyfinSelection sel) async {
     final account = widget.accounts.account(sel.serverId);
     final client = widget.accounts.clientFor(sel.serverId);
     if (account == null || client == null) return 'that Jellyfin server is not linked any more';
@@ -176,43 +185,32 @@ class _LibraryTabState extends State<LibraryTab> {
       return e.message;
     }
     if (item == null) return 'nothing to play in there';
-    return _put(pickFor(account, item));
+    return pickFor(account, item);
   }
 
-  /// Double-click on a card: put it up, errors as a snack bar.
-  Future<void> _doublePutUp(JellyfinSelection sel) async {
-    _c.select(sel);
-    if (!widget.online) return;
-    final error = await _putUpJellyfin(sel);
+  /// "Add to queue" on a Jellyfin card, episode or the details panel.
+  Future<String?> _queueJellyfin(JellyfinSelection sel, {bool next = false}) async {
+    final add = widget.onAddToQueue;
+    if (add == null) return null;
+    final pick = await _jellyfinPick(sel);
+    return pick is JellyfinMedia ? add(pick, next: next) : pick as String;
+  }
+
+  /// A card's menu: errors as a snack bar.
+  Future<void> _cardQueue(JellyfinSelection sel, {bool next = false}) async {
+    final error = await _queueJellyfin(sel, next: next);
     if (error != null && mounted) {
       ScaffoldMessenger.maybeOf(context)?.showSnackBar(SnackBar(content: Text(error)));
     }
   }
 
-  // -------------------------------------------------------------- paste
-
-  KeyEventResult _onKey(FocusNode node, KeyEvent e) {
-    final ctrl = HardwareKeyboard.instance.isControlPressed || HardwareKeyboard.instance.isMetaPressed;
-    if (e is! KeyDownEvent || !ctrl || e.logicalKey != LogicalKeyboardKey.keyV) {
-      return KeyEventResult.ignored;
+  /// Double-click on a card: put it up, errors as a snack bar.
+  Future<void> _doublePutUp(JellyfinSelection sel) async {
+    _c.select(sel);
+    final error = await _putUpJellyfin(sel);
+    if (error != null && mounted) {
+      ScaffoldMessenger.maybeOf(context)?.showSnackBar(SnackBar(content: Text(error)));
     }
-    // A focused text field handles its own paste.
-    final inField =
-        FocusManager.instance.primaryFocus?.context?.findAncestorStateOfType<EditableTextState>() != null;
-    if (inField) return KeyEventResult.ignored;
-    unawaited(_pasteLink());
-    return KeyEventResult.handled;
-  }
-
-  /// Ctrl+V outside a field: an http(s) link goes to the Link source.
-  Future<void> _pasteLink() async {
-    String? text;
-    try {
-      text = (await Clipboard.getData(Clipboard.kTextPlain))?.text?.trim();
-    } catch (_) {}
-    if (text == null || !(text.startsWith('http://') || text.startsWith('https://'))) return;
-    _c.link.text = text;
-    _c.source = MediaKind.link;
   }
 
   // -------------------------------------------------------------- build
@@ -263,23 +261,39 @@ class _LibraryTabState extends State<LibraryTab> {
             selected: _c.selected,
             onSelect: _c.select,
             onPutUp: _doublePutUp,
+            onAddToQueue: widget.onAddToQueue == null ? null : _cardQueue,
             onOpenIntegrations: widget.onOpenIntegrations,
             start: widget.jellyfinStart,
             libraryStrip: false,
+            empty: (context) => NoJellyfinPanel(
+              accounts: widget.accounts,
+              onFiles: () => _c.source = MediaKind.file,
+              onLink: () => _c.source = MediaKind.link,
+            ),
           ),
         ),
       MediaKind.link => LibraryLinkSource(
           controller: _c,
-          offlineHint: _hint,
+          solo: widget.solo,
           recents: widget.recentLinks ?? RecentLinks.instance,
-          oembed: widget.oembed,
+          probe: widget.probe,
           onPutUp: _put,
+          onAddToQueue: widget.onAddToQueue,
         ),
       MediaKind.file => _files(context),
     };
 
     final main = Column(
       children: [
+        AnimatedSize(
+          duration: easeTime,
+          curve: ease,
+          alignment: Alignment.topCenter,
+          child: AnimatedSwitcher(
+            duration: easeTime,
+            child: widget.banner ?? const SizedBox(width: double.infinity),
+          ),
+        ),
         header,
         Expanded(child: fadeThrough(KeyedSubtree(key: ValueKey(source), child: content))),
       ],
@@ -294,8 +308,9 @@ class _LibraryTabState extends State<LibraryTab> {
             child: JellyfinDetailsPanel(
               controller: _browse,
               selection: shown,
-              offlineHint: _hint,
+              solo: widget.solo,
               onPutUp: _putUpJellyfin,
+              onAddToQueue: widget.onAddToQueue == null ? null : _queueJellyfin,
               onClose: () => _c.select(null),
             ),
           ));
@@ -306,10 +321,10 @@ class _LibraryTabState extends State<LibraryTab> {
           child: AnimatedOpacity(duration: easeTime, curve: ease, opacity: open ? 1 : 0, child: child),
         );
 
+    // Holds focus so the shell's shortcuts (Ctrl+,) work.
     return Focus(
       key: const ValueKey('library-tab'),
       autofocus: true,
-      onKeyEvent: _onKey,
       child: LayoutBuilder(builder: (context, box) {
         if (box.maxWidth >= detailsDockFrom) {
           return Row(
@@ -355,14 +370,20 @@ class _LibraryTabState extends State<LibraryTab> {
     Future<String?> play(String path) => _put(FileMedia(path));
     return SignalBuilder(builder: (context) {
       final session = SessionState.instance;
-      final now = widget.online
+      final now = session.route.value == AppRoute.session
           ? nowPlayingFile(session.coordinator.serverState.value?.media, session.lastForm.mediaPath)
           : null;
       final b = widget.filesBuilder;
       if (b != null) {
-        return b(context, online: widget.online, relayed: relayed, onPlay: play, nowPlayingPath: now);
+        return b(context, solo: widget.solo, relayed: relayed, onPlay: play, nowPlayingPath: now);
       }
-      return FilesPage(online: widget.online, relayed: relayed, onPlay: play, nowPlayingPath: now);
+      final add = widget.onAddToQueue;
+      return FilesPage(
+          solo: widget.solo,
+          relayed: relayed,
+          onPlay: play,
+          onAddToQueue: add == null ? null : (path, {next = false}) => add(FileMedia(path), next: next),
+          nowPlayingPath: now);
     });
   }
 }

apps/desktop/lib/src/shell/mark_problem.dart

@@ -0,0 +1,113 @@
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:sync_relay_core/core.dart' show RelayConstants;
+
+import '../state/session_state.dart';
+import '../widgets/app_menu.dart' show AppGlass;
+import 'motion.dart';
+
+// "Mark a problem" (Ctrl+Shift+B, the player's ⚙, Settings → About): a
+// marker line in the server's session log at this moment, with an
+// optional short note, so whoever reads the log finds the spot.
+
+/// The key that opens it.
+const markProblemKey = SingleActivator(LogicalKeyboardKey.keyB, control: true, shift: true);
+
+/// Asks for the note, then marks; the toast says where it went.
+Future<void> showMarkProblem(BuildContext context) async {
+  final note = await showPopover<String>(context, at: Alignment.center, child: const MarkProblemCard());
+  if (note == null) return;
+  final coord = SessionState.instance.coordinator;
+  final inSession = await coord.markProblem(note);
+  coord.showToast(inSession ? 'Marked in the session log' : "Marked in this app's log");
+}
+
+/// The small card: a one-line note and Mark. Pops with the note (maybe
+/// empty), or nothing on Cancel / Esc.
+class MarkProblemCard extends StatefulWidget {
+  const MarkProblemCard({super.key});
+
+  @override
+  State<MarkProblemCard> createState() => _MarkProblemCardState();
+}
+
+class _MarkProblemCardState extends State<MarkProblemCard> {
+  final _note = TextEditingController();
+
+  @override
+  void dispose() {
+    _note.dispose();
+    super.dispose();
+  }
+
+  void _mark() => Navigator.of(context).pop(_note.text.trim());
+
+  @override
+  Widget build(BuildContext context) {
+    final muted = Theme.of(context).colorScheme.onSurfaceVariant;
+    return AppGlass(
+      key: const ValueKey('mark-problem-card'),
+      child: SizedBox(
+        width: 380,
+        child: Padding(
+          padding: const EdgeInsets.fromLTRB(16, 12, 16, 10),
+          child: Column(
+            mainAxisSize: MainAxisSize.min,
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              const Text('Mark a problem', style: TextStyle(fontWeight: FontWeight.w600, fontSize: 14)),
+              const SizedBox(height: 4),
+              Text("Puts a marker in the server's session log right now, so whoever reads it finds the moment.",
+                  style: TextStyle(color: muted, fontSize: 12)),
+              const SizedBox(height: 8),
+              TextField(
+                key: const ValueKey('mark-problem-note'),
+                controller: _note,
+                autofocus: true,
+                maxLength: RelayConstants.maxProblemNoteLength,
+                decoration: const InputDecoration(
+                  isDense: true,
+                  hintText: 'What happened? (optional)',
+                  counterText: '',
+                ),
+                onSubmitted: (_) => _mark(),
+              ),
+              const SizedBox(height: 8),
+              Row(
+                mainAxisAlignment: MainAxisAlignment.end,
+                children: [
+                  TextButton(onPressed: () => Navigator.of(context).pop(), child: const Text('Cancel')),
+                  const SizedBox(width: 8),
+                  FilledButton.tonal(
+                    key: const ValueKey('mark-problem-go'),
+                    onPressed: _mark,
+                    child: const Text('Mark'),
+                  ),
+                ],
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+/// "Mark a problem" as a quiet row button (the ⚙ card, Settings → About).
+class MarkProblemButton extends StatelessWidget {
+  final bool outlined;
+  const MarkProblemButton({super.key, this.outlined = false});
+
+  @override
+  Widget build(BuildContext context) {
+    const icon = Icon(Icons.flag_outlined, size: 18);
+    const label = Text('Mark a problem');
+    void open() => showMarkProblem(context);
+    return Tooltip(
+      message: 'Ctrl+Shift+B',
+      child: outlined
+          ? OutlinedButton.icon(key: const ValueKey('mark-problem'), onPressed: open, icon: icon, label: label)
+          : TextButton.icon(key: const ValueKey('mark-problem'), onPressed: open, icon: icon, label: label),
+    );
+  }
+}

apps/desktop/lib/src/shell/motion.dart

@@ -90,17 +90,17 @@ Future<T?> showPopover<T>(
       },
     );
 
-/// Horizontal lists for mouse users: drag with the mouse, and the plain
-/// (vertical) wheel moves them sideways. At either end the wheel is left
-/// to the page, so a row never traps vertical scrolling.
+/// Horizontal lists for mouse users: drag with the mouse or Shift+wheel;
+/// the plain wheel stays vertical (the page scrolls under the cursor, not
+/// the row).
 class HScroll extends StatefulWidget {
   final ScrollController? controller;
   final Widget Function(ScrollController controller) builder;
-  /// Map the plain (vertical) wheel to sideways scrolling. Off where the
-  /// children scroll vertically themselves (the schedule's day columns):
-  /// there only mouse drag and Shift+wheel move sideways.
+  /// Also map the plain (vertical) wheel to sideways scrolling (at either
+  /// end the wheel goes to the page). Off by default: one wheel doing two
+  /// things was confusing.
   final bool wheel;
-  const HScroll({super.key, this.controller, required this.builder, this.wheel = true});
+  const HScroll({super.key, this.controller, required this.builder, this.wheel = false});
 
   @override
   State<HScroll> createState() => _HScrollState();

apps/desktop/lib/src/shell/now_playing_title.dart

@@ -4,6 +4,8 @@ import 'package:signals/signals_flutter.dart';
 
 import '../session/now_playing.dart';
 import '../state/session_state.dart';
+import '../widgets/app_menu.dart';
+import '../widgets/copy_open.dart';
 import 'motion.dart';
 
 /// Tests: art bytes by hash instead of the session's cache.
@@ -47,18 +49,20 @@ Widget fadeInImage(ImageProvider image, {BoxFit fit = BoxFit.cover}) => Image(
     );
 
 /// The portrait cover (2:3) of the current media, a quiet tile with a
-/// film icon until (or unless) its art arrives.
+/// film icon until (or unless) its art arrives; [wide] (a video
+/// thumbnail): 16:9 at the same height.
 class ArtCover extends StatelessWidget {
   final String hash;
   final double width;
-  const ArtCover({super.key, required this.hash, this.width = 40});
+  final bool wide;
+  const ArtCover({super.key, required this.hash, this.width = 40, this.wide = false});
 
   @override
   Widget build(BuildContext context) {
     final image = artImage(hash);
     final r = BorderRadius.circular(width >= 80 ? 10 : 6);
     return Container(
-      width: width,
+      width: wide ? width * 1.5 * 16 / 9 : width,
       height: width * 1.5,
       decoration: BoxDecoration(
         borderRadius: r,
@@ -116,7 +120,7 @@ class NowPlayingBlock extends StatelessWidget {
         key: ValueKey('now-playing:${n.title}\n${episode ?? ''}'),
         mainAxisSize: MainAxisSize.min,
         children: [
-          if (cover) ...[ArtCover(hash: n.posterHash), const SizedBox(width: 12)],
+          if (cover) ...[ArtCover(hash: n.posterHash, wide: n.thumbnail), const SizedBox(width: 12)],
           Flexible(
             child: Column(
               mainAxisSize: MainAxisSize.min,
@@ -151,14 +155,17 @@ class NowPlayingBlock extends StatelessWidget {
   }
 }
 
-/// [NowPlayingBlock] of the session's current media.
+/// [NowPlayingBlock] of the session's current media; right-click copies
+/// its title or link, or opens it ([nowPlayingMenu]).
 class NowPlayingTitle extends StatelessWidget {
   final bool cover;
   final bool compact;
   const NowPlayingTitle({super.key, this.cover = true, this.compact = false});
 
   @override
-  Widget build(BuildContext context) => ListenableBuilder(
+  Widget build(BuildContext context) => GestureDetector(
+        onSecondaryTap: () => nowPlayingMenu(context),
+        child: ListenableBuilder(
           listenable: artChanges(),
           builder: (context, _) => SignalBuilder(
             builder: (context) => NowPlayingBlock(
@@ -167,5 +174,38 @@ class NowPlayingTitle extends StatelessWidget {
               compact: compact,
             ),
           ),
+        ),
       );
 }
+
+/// Copy title; with the link known here ([SessionCoordinator.currentLink])
+/// Copy link and Open in browser; a Jellyfin item on a server linked here,
+/// Open in Jellyfin. [context]: where the menu opens.
+Future<void> nowPlayingMenu(BuildContext context) async {
+  final coord = SessionState.instance.coordinator;
+  final now = coord.nowPlaying.peek();
+  if (now == null) return;
+  final link = coord.currentLink();
+  final ref = coord.currentRef.peek();
+  final page = ref == null ? null : coord.jellyfin.webUrlOf(ref.serverId, ref.itemId);
+  final episode = now.episode;
+  final title = episode == null || episode.isEmpty ? now.title : '${now.title} · $episode';
+  final pick = await showAppMenu<String>(context, items: [
+    const AppMenuItem(value: 'title', label: ReuseText.copyTitle),
+    if (link != null) ...const [
+      AppMenuItem(value: 'link', label: ReuseText.copyLink),
+      AppMenuItem(value: 'open', label: ReuseText.openInBrowser),
+    ],
+    if (page != null) const AppMenuItem(value: 'jellyfin', label: ReuseText.openInJellyfin),
+  ]);
+  switch (pick) {
+    case 'title':
+      await copyToClipboard(title, done: 'Title copied');
+    case 'link':
+      await copyToClipboard(link!, done: 'Link copied');
+    case 'open':
+      await openLink(link!);
+    case 'jellyfin':
+      await openLink(page!);
+  }
+}

apps/desktop/lib/src/shell/party_strip.dart

@@ -1,20 +1,21 @@
 import 'dart:io';
 
-import 'package:flutter/foundation.dart';
 import 'package:flutter/material.dart';
-import 'package:flutter/services.dart';
 import 'package:signals/signals_flutter.dart';
 import 'package:sync_relay_core/core.dart';
 import 'package:window_manager/window_manager.dart';
 
-import '../screens/demo/shell_demo.dart';
+import '../screens/home/ui.dart' show appName, displayVersion;
 import '../screens/home/update_indicator.dart';
-import '../screens/session/jellyfin_widgets.dart' show ViaHostBadge;
+import '../session/delivery.dart';
 import '../state/session_state.dart';
 import '../update/update_controller.dart';
-import '../widgets/dialogs.dart';
+import '../widgets/app_keys.dart';
+import '../widgets/app_menu.dart';
+import '../widgets/copy_open.dart';
 import '../widgets/window_buttons.dart';
 import 'avatar.dart';
+import 'delivery_line.dart';
 import 'motion.dart';
 
 /// The shell's tabs, in strip order.
@@ -29,17 +30,17 @@ enum ShellTab {
 
 const partyStripHeight = 60.0;
 
+/// Every avatar in the strip, yours and the party's.
+const stripAvatarSize = 42.0;
+
 /// Below this window width the strip shows 3 avatars and no server text,
 /// so the tabs keep their room.
 const stripCompactBelow = 1100.0;
 
-/// The member plays the current Jellyfin item through the host's relay.
-bool viaHostOf(MemberView m, JellyfinRef? ref) =>
-    ref != null && m.jf[ref.serverId] == false;
-
 /// The 60 px strip over everything: your avatar (profile), the tabs, and
-/// the party: offline Join / Host, online the avatars (members card),
-/// server and readiness, chat and Leave. Empty space drags the window.
+/// the party: offline Join a friend / Host, solo a "Solo" chip, Invite
+/// friends and Stop, online the avatars (members card), server and
+/// readiness, chat and Leave. Empty space drags the window.
 class PartyStrip extends StatelessWidget {
   final ShellTab tab;
   final ValueChanged<ShellTab> onTab;
@@ -50,6 +51,8 @@ class PartyStrip extends StatelessWidget {
   final VoidCallback onHost;
   final VoidCallback onLeave;
   final VoidCallback onProfile;
+  /// Solo: host from here, keeping what plays.
+  final VoidCallback? onInvite;
 
   /// Online with something up but the player closed: brings it back.
   final VoidCallback? onShowPlayer;
@@ -68,6 +71,7 @@ class PartyStrip extends StatelessWidget {
     required this.onHost,
     required this.onLeave,
     required this.onProfile,
+    this.onInvite,
     this.onShowPlayer,
     this.updates,
     this.windowControls = true,
@@ -82,6 +86,7 @@ class PartyStrip extends StatelessWidget {
         final session = SessionState.instance;
         final coord = session.coordinator;
         final online = session.route.value == AppRoute.session;
+        final solo = online && (session.solo.value || session.switching.value);
         final self = online ? coord.selfMember.value : null;
         return Row(
           children: [
@@ -90,14 +95,16 @@ class PartyStrip extends StatelessWidget {
               message: 'Your profile',
               child: InkWell(
                 key: const ValueKey('strip-profile'),
+                canRequestFocus: false,
                 customBorder: const CircleBorder(),
                 onTap: onProfile,
                 child: StatusAvatar(
                   info: selfAvatarInfo(
                     ready: self?.ready ?? false,
-                    host: online && coord.hostFile != null,
+                    host: online && !solo && coord.hostFile != null,
+                    error: online ? coord.playerError.value : '',
                   ),
-                  size: 32,
+                  size: stripAvatarSize,
                   ring: online,
                 ),
               ),
@@ -118,6 +125,8 @@ class PartyStrip extends StatelessWidget {
                             label: t.label,
                             selected: t == tab,
                             compact: compact,
+                            // The version, a rest of the mouse away.
+                            tooltip: t == ShellTab.settings ? '$appName ${displayVersion()}' : null,
                             onTap: () => onTab(t),
                           ),
                       ],
@@ -126,45 +135,59 @@ class PartyStrip extends StatelessWidget {
                 ),
               ),
             ),
-            if (kDebugMode)
-              IconButton(
-                tooltip: 'Layout demo (debug builds only)',
-                icon: const Icon(
-                  Icons.bug_report_outlined,
-                  size: 20,
-                  color: Colors.amber,
-                ),
-                onPressed: () => Navigator.of(context).push(
-                  MaterialPageRoute<void>(builder: (_) => const ShellDemo()),
-                ),
-              ),
             UpdateIndicator(controller: updates),
             const SizedBox(width: 8),
-            if (online) ...[
-              if (onShowPlayer != null)
+            if (online && onShowPlayer != null)
               IconButton(
                 key: const ValueKey('show-player'),
                 tooltip: 'Show the player',
                 onPressed: onShowPlayer,
                 icon: const Icon(Icons.smart_display_outlined, size: 20),
               ),
+            if (solo) ...[
+              _SoloChip(compact: compact, busy: session.switching.value),
+              const SizedBox(width: 10),
+              if (compact)
+                FilledButton(
+                  key: const ValueKey('strip-invite'),
+                  onPressed: session.switching.value ? null : onInvite,
+                  child: const Text('Invite'),
+                )
+              else
+                FilledButton.icon(
+                  key: const ValueKey('strip-invite'),
+                  onPressed: session.switching.value ? null : onInvite,
+                  icon: const Icon(Icons.group_add_outlined, size: 18),
+                  label: const Text('Invite friends'),
+                ),
+              const SizedBox(width: 8),
+              OutlinedButton(
+                key: const ValueKey('strip-leave'),
+                onPressed: session.switching.value ? null : onLeave,
+                child: const Text('Stop'),
+              ),
+            ] else if (online) ...[
               PartyWatch(
                 builder: (context) => AvatarStack(
                   key: const ValueKey('party-avatars'),
                   members: partyAvatars(coord),
                   shown: compact ? 3 : 5,
+                  size: stripAvatarSize,
                   onTap: () => showMembersCard(context),
                 ),
               ),
               const SizedBox(width: 10),
               if (!compact) _ServerLabel(scheme: scheme),
               const SizedBox(width: 6),
-              Badge(
+              // Tab toggles the chat while the strip is shown.
+              ChatKey(
+                onToggle: onChat,
+                child: Badge(
                   isLabelVisible: unread > 0,
                   label: Text('$unread'),
                   child: IconButton(
                     key: const ValueKey('strip-chat'),
-                  tooltip: 'Chat & activity',
+                    tooltip: 'Chat & activity (Tab)',
                     isSelected: chatOpen,
                     onPressed: onChat,
                     icon: const Icon(Icons.chat_bubble_outline, size: 20),
@@ -175,6 +198,7 @@ class PartyStrip extends StatelessWidget {
                     ),
                   ),
                 ),
+              ),
               const SizedBox(width: 4),
               OutlinedButton(
                 key: const ValueKey('strip-leave'),
@@ -182,24 +206,36 @@ class PartyStrip extends StatelessWidget {
                 child: const Text('Leave'),
               ),
             ] else ...[
-              if (!compact)
-                Text(
-                  'Offline',
-                  style: TextStyle(color: scheme.onSurfaceVariant),
+              if (!compact) ...[
+                Container(
+                  width: 7,
+                  height: 7,
+                  decoration: BoxDecoration(color: scheme.outline, shape: BoxShape.circle),
                 ),
+                const SizedBox(width: 6),
+                Text('Offline', style: TextStyle(color: scheme.onSurfaceVariant)),
                 const SizedBox(width: 12),
-              FilledButton.tonal(
+              ],
+              if (compact) ...[
+                FilledButton(key: const ValueKey('strip-join'), onPressed: onJoin, child: const Text('Join')),
+                const SizedBox(width: 8),
+                FilledButton.tonal(key: const ValueKey('strip-host'), onPressed: onHost, child: const Text('Host')),
+              ] else ...[
+                FilledButton.icon(
                   key: const ValueKey('strip-join'),
                   onPressed: onJoin,
-                child: const Text('Join'),
+                  icon: const Icon(Icons.login_rounded, size: 18),
+                  label: const Text('Join a friend'),
                 ),
                 const SizedBox(width: 8),
-              FilledButton(
+                FilledButton.tonalIcon(
                   key: const ValueKey('strip-host'),
                   onPressed: onHost,
-                child: const Text('Host'),
+                  icon: const Icon(Icons.podcasts_rounded, size: 18),
+                  label: const Text('Host'),
                 ),
               ],
+            ],
             const SizedBox(width: 8),
             if (windowControls) ...[
               SizedBox(
@@ -275,11 +311,54 @@ class _ServerLabel extends StatelessWidget {
   );
 }
 
-/// "Your server" when hosting, else the address joined.
+/// "Solo" alone, "Your server" when hosting, else the joined server's
+/// name (its `--name`), or its address while unknown.
 String serverName() {
   final session = SessionState.instance;
+  if (session.solo.value) return 'Solo';
   if (session.coordinator.hostFile != null) return 'Your server';
-  return session.lastForm.host;
+  final label = session.serverLabel.value;
+  return label.isNotEmpty ? label : session.lastForm.host;
+}
+
+/// Solo: just you, on your own; a spinner while it becomes a server.
+class _SoloChip extends StatelessWidget {
+  final bool compact;
+  final bool busy;
+  const _SoloChip({required this.compact, required this.busy});
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    return Tooltip(
+      message: busy
+          ? 'Starting your server…'
+          : 'Watching on your own. Nobody can join until you invite friends.',
+      child: Container(
+        key: const ValueKey('solo-chip'),
+        padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 6),
+        decoration: BoxDecoration(
+          color: scheme.surfaceContainerHigh,
+          borderRadius: BorderRadius.circular(20),
+        ),
+        child: Row(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            if (busy)
+              const SizedBox.square(dimension: 14, child: CircularProgressIndicator(strokeWidth: 2))
+            else
+              Icon(Icons.person_outline_rounded, size: 16, color: scheme.primary),
+            const SizedBox(width: 6),
+            Text(busy ? 'Inviting…' : 'Solo', style: const TextStyle(fontWeight: FontWeight.w600)),
+            if (!compact && !busy) ...[
+              const SizedBox(width: 6),
+              Text('only you', style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12)),
+            ],
+          ],
+        ),
+      ),
+    );
+  }
 }
 
 /// One strip tab: label and an underline that grows in when selected.
@@ -288,18 +367,21 @@ class StripTab extends StatelessWidget {
   final bool selected;
   final bool compact;
   final VoidCallback onTap;
+  /// Shown after resting on the tab.
+  final String? tooltip;
   const StripTab({
     super.key,
     required this.label,
     required this.selected,
     required this.onTap,
     this.compact = false,
+    this.tooltip,
   });
 
   @override
   Widget build(BuildContext context) {
     final scheme = Theme.of(context).colorScheme;
-    return Semantics(
+    final tab = Semantics(
       selected: selected,
       button: true,
       child: InkWell(
@@ -337,11 +419,14 @@ class StripTab extends StatelessWidget {
         ),
       ),
     );
+    final tip = tooltip;
+    return tip == null ? tab : Tooltip(message: tip, waitDuration: const Duration(milliseconds: 600), child: tab);
   }
 }
 
 /// Who is in the server, from the avatars: status, host / relay pills,
-/// per member force ready and kick, and the address to invite friends.
+/// per member force ready, nudge and sit out, and the address to invite
+/// friends.
 Future<void> showMembersCard(BuildContext context) => showPopover<void>(
   context,
   at: const Alignment(0.7, -0.84),
@@ -403,6 +488,9 @@ class MembersCard extends StatelessWidget {
             final address = hosting
                 ? null
                 : '${session.lastForm.host}:${session.lastForm.port}';
+            final delivery = r == null
+                ? null
+                : deliveryOf(r, selfId: coord.sync.memberId, names: coord.memberNames);
             return Column(
               mainAxisSize: MainAxisSize.min,
               crossAxisAlignment: CrossAxisAlignment.stretch,
@@ -414,11 +502,12 @@ class MembersCard extends StatelessWidget {
                     style: const TextStyle(fontWeight: FontWeight.w600),
                   ),
                 ),
+                if (delivery != null) SourceLine(delivery: delivery),
                 for (final m in r?.members ?? const <MemberView>[])
                   _MemberTile(
                     member: m,
                     info: memberAvatarInfo(m, r, coord),
-                    viaHost: viaHostOf(m, coord.currentRef.value),
+                    delivery: delivery == null ? null : memberDeliveryOf(m, r!, delivery),
                   ),
                 if (r == null)
                   Padding(
@@ -436,8 +525,7 @@ class MembersCard extends StatelessWidget {
                       alignment: Alignment.centerLeft,
                       child: TextButton.icon(
                         key: const ValueKey('copy-invite'),
-                        onPressed: () =>
-                            Clipboard.setData(ClipboardData(text: address)),
+                        onPressed: () => copyToClipboard(address, done: 'Invite address copied'),
                         icon: const Icon(Icons.copy, size: 16),
                         label: const Text('Copy invite address'),
                       ),
@@ -460,11 +548,12 @@ class MembersCard extends StatelessWidget {
 class _MemberTile extends StatelessWidget {
   final MemberView member;
   final AvatarInfo info;
-  final bool viaHost;
+  /// How it gets the media and its buffer; null with nothing up or alone.
+  final MemberDelivery? delivery;
   const _MemberTile({
     required this.member,
     required this.info,
-    required this.viaHost,
+    this.delivery,
   });
 
   @override
@@ -473,6 +562,10 @@ class _MemberTile extends StatelessWidget {
     final m = member;
     final status = m.stale
         ? 'reconnecting…'
+        : m.out
+        ? 'sitting out'
+        : m.error.isNotEmpty
+        ? "can't play this: ${m.error}"
         : info.buffering
         ? 'buffering ${m.buffered.toStringAsFixed(1)} s'
         : m.ready
@@ -491,34 +584,30 @@ class _MemberTile extends StatelessWidget {
           if (info.host) const Pill('host', Colors.amber),
           if (info.relaying)
             const Pill('passing the video on', Colors.lightBlueAccent),
-          if (viaHost) const ViaHostBadge(),
         ],
       ),
-      subtitle: Text(status),
-      trailing: PopupMenuButton<String>(
+      subtitle: DeliveryStatus(status: status, delivery: delivery),
+      trailing: AppMenuButton<String>(
         tooltip: 'More',
-        icon: const Icon(Icons.more_vert, size: 18),
-        onSelected: (v) async {
-          if (v == 'force') {
+        onSelected: (v) {
+          switch (v) {
+            case 'force':
               coord.forceTarget(m.id, !m.ready);
-          } else if (v == 'kick') {
-            final ok = await showKickConfirmDialog(context, m.name);
-            if (ok == true) coord.kick(m.id);
+            case 'nudge':
+              coord.nudgeMember(m.id);
+            case 'out':
+              coord.sitOut(m.id);
+            case 'back':
+              coord.joinBack();
           }
         },
-        itemBuilder: (_) => [
-          PopupMenuItem(
-            value: 'force',
-            child: Text(m.ready ? 'Force unready' : 'Force ready'),
-          ),
-          if (!info.self && !info.host)
-            PopupMenuItem(
-              value: 'kick',
-              child: Text(
-                'Kick',
-                style: TextStyle(color: Theme.of(context).colorScheme.error),
-              ),
-            ),
+        items: () => [
+          if (!m.out) AppMenuItem(value: 'force', label: m.ready ? 'Force unready' : 'Force ready'),
+          if (!info.self) const AppMenuItem(value: 'nudge', label: 'Nudge'),
+          if (info.self && m.out)
+            const AppMenuItem(value: 'back', label: 'Join back')
+          else if (!m.out)
+            const AppMenuItem(value: 'out', label: 'Sit out'),
         ],
       ),
     );
@@ -546,7 +635,7 @@ class _HostInviteState extends State<_HostInvite> {
       future: _addresses,
       builder: (context, snap) {
         final list = snap.data ?? const <String>[];
-        void copy(String a) => Clipboard.setData(ClipboardData(text: a));
+        void copy(String a) => copyToClipboard(a, done: 'Invite address copied');
         return Padding(
           padding: const EdgeInsets.fromLTRB(12, 0, 12, 12),
           child: Column(

apps/desktop/lib/src/shell/player_status.dart

@@ -1,5 +1,4 @@
 import 'dart:async';
-import 'dart:ui' show ImageFilter;
 
 import 'package:flutter/material.dart';
 import 'package:sync_relay_core/core.dart';
@@ -7,15 +6,17 @@ import 'package:sync_relay_core/core.dart';
 import '../session/health.dart';
 import '../session/session_coordinator.dart';
 import '../state/session_state.dart';
+import '../widgets/app_menu.dart' show AppGlass;
 import 'avatar.dart';
 import 'motion.dart';
 
 /// What the player's status pill says, most pressing first.
-enum StatusKind { kicked, reconnecting, problem, connecting, finished, loading, you, waiting }
+enum StatusKind { reconnecting, problem, connecting, finished, loading, you, cannotPlay, waiting }
 
-/// The pill's button: stop reconnecting, retry, or mark yourself ready
-/// (the whole pill).
-enum StatusAction { cancel, retry, ready }
+/// The pill's button: stop reconnecting, retry (reconnect), reload the
+/// video (your player could not open it), or mark yourself ready (the
+/// whole pill).
+enum StatusAction { cancel, retry, reload, ready }
 
 /// One status line: [text], a muted [detail], a coloured [tone] for
 /// problems (warn, error), the members it is about ([who]; [self] for you)
@@ -55,24 +56,24 @@ String _sentence(String s) => s.isEmpty ? s : s[0].toUpperCase() + s.substring(1
 
 /// The player's status from the session's signals; null when there is
 /// nothing to say (playing, connected, everyone ready). [slowConnect]:
-/// connecting has taken over 2 s.
+/// connecting has taken over 2 s. [playerError]: why your player cannot
+/// open the media (the coordinator's `playerError`).
 StatusView? playerStatusFor({
   required HealthStatus health,
   bool reconnecting = false,
-  String? kickReason,
   StateBroadcast? state,
   MemberView? self,
   bool slowConnect = false,
+  String playerError = '',
 }) {
-  if (kickReason != null) {
-    return StatusView(StatusKind.kicked,
-        kickReason.isEmpty ? 'You were removed from the server' : 'You were removed: $kickReason',
-        tone: HealthSeverity.error, short: 'Removed from the server');
-  }
   if (reconnecting) {
     return const StatusView(StatusKind.reconnecting, 'Reconnecting…',
         tone: HealthSeverity.warn, action: StatusAction.cancel);
   }
+  if (playerError.isNotEmpty && state?.media != null && !(self?.out ?? false)) {
+    return StatusView(StatusKind.problem, "Can't play this: $playerError",
+        tone: HealthSeverity.error, action: StatusAction.reload, short: "Can't play this");
+  }
   if (health.severity == HealthSeverity.warn || health.severity == HealthSeverity.error) {
     return StatusView(StatusKind.problem, _sentence(health.message),
         tone: health.severity, action: StatusAction.retry);
@@ -82,23 +83,44 @@ StatusView? playerStatusFor({
   }
   final r = state;
   if (r == null || r.media == null || r.transport == 'playing') return null;
+  // Sitting out: the join-back card says it; nobody waits for you.
+  if (self != null && self.out) return null;
   if (r.transport == 'finished') {
     return const StatusView(StatusKind.finished, 'Finished · seek back or pick the next video', short: 'Finished');
   }
+  // Members whose player cannot open it: the server does not wait for
+  // them; say why instead of "waiting for".
+  final failed = [
+    for (final m in r.members)
+      if (m.error.isNotEmpty && !m.out && (self == null || m.id != self.id)) m,
+  ];
   // As the server holds playback: someone in the ready set short of the
   // minimum buffer.
+  final need = r.bufferNeed;
   for (final m in r.members) {
-    if (m.inSet && m.buffered < RelayConstants.minBufferSecs) {
+    if (m.inSet && m.buffered < need) {
       final you = self != null && m.id == self.id;
+      final p = (m.buffered / need).clamp(0.0, 1.0);
       return StatusView(StatusKind.loading, you ? 'Loading the video…' : '${m.name} is loading…',
-          who: [m], self: you, progress: (m.buffered / RelayConstants.minBufferSecs).clamp(0.0, 1.0));
+          who: [m], self: you, progress: p, detail: '${(p * 100).round()}%');
     }
   }
+  if (failed.isNotEmpty) {
+    final f = failed.first;
+    final who = nameList([for (final m in failed) m.name]);
+    final unready = self != null && !self.ready;
+    return StatusView(StatusKind.cannotPlay, "$who can't play this: ${f.error}",
+        who: failed,
+        short: "$who can't play this",
+        detail: unready ? "Press Space when you're ready" : null,
+        action: unready ? StatusAction.ready : null);
+  }
   if (self != null && !self.ready) {
     return StatusView(StatusKind.you, "Press Space when you're ready",
-        who: [self], self: true, action: StatusAction.ready, short: 'Press Space when ready');
+        who: [self], self: true, action: StatusAction.ready, detail: 'or click here', short: 'Press Space when ready');
   }
-  final active = [for (final m in r.members) if (!m.stale) m];
+  // Members sitting out are never waited for nor counted.
+  final active = [for (final m in r.members) if (!m.stale && !m.out && m.error.isEmpty) m];
   final others = [
     for (final m in active)
       if ((self == null || m.id != self.id) && !(m.inSet && m.ready)) m,
@@ -115,10 +137,10 @@ StatusView? playerStatusNow({bool slowConnect = false}) {
   return playerStatusFor(
     health: c.health.value,
     reconnecting: c.reconnecting.value,
-    kickReason: c.kickReason.value,
     state: c.serverState.value,
     self: c.selfMember.value,
     slowConnect: slowConnect,
+    playerError: c.playerError.value,
   );
 }
 
@@ -166,6 +188,8 @@ class _PlayerStatusState extends State<PlayerStatus> {
         coord.cancelReconnect();
       case StatusAction.retry:
         coord.retry();
+      case StatusAction.reload:
+        unawaited(coord.reloadVideo());
       case StatusAction.ready:
         coord.toggleReady();
     }
@@ -193,7 +217,7 @@ class _PlayerStatusState extends State<PlayerStatus> {
                   child: GestureDetector(
                     key: const ValueKey('player-status'),
                     onTap: ready ? coord.toggleReady : null,
-                    child: _Glass(
+                    child: PlayerGlass(
                       child: AnimatedSize(
                         duration: easeTime,
                         curve: ease,
@@ -217,32 +241,18 @@ class _PlayerStatusState extends State<PlayerStatus> {
   }
 }
 
-class _Glass extends StatelessWidget {
+/// The player's pill surface (the status pill, the action pills, the
+/// unread chip): the app's glass as a stadium ([AppGlass.pill]).
+class PlayerGlass extends StatelessWidget {
   final Widget child;
-  const _Glass({required this.child});
+  const PlayerGlass({super.key, required this.child});
 
   @override
-  Widget build(BuildContext context) {
-    final r = BorderRadius.circular(999);
-    return ConstrainedBox(
+  Widget build(BuildContext context) => ConstrainedBox(
         constraints: const BoxConstraints(maxWidth: 560),
-      child: ClipRRect(
-        borderRadius: r,
-        child: BackdropFilter(
-          filter: ImageFilter.blur(sigmaX: 12, sigmaY: 12),
-          child: DecoratedBox(
-            decoration: BoxDecoration(
-              color: Colors.black.withValues(alpha: 0.55),
-              borderRadius: r,
-              border: Border.all(color: Colors.white12, width: 0.5),
-            ),
-            child: child,
-          ),
-        ),
-      ),
+        child: AppGlass.pill(child: child),
       );
 }
-}
 
 class _StatusLine extends StatelessWidget {
   final StatusView view;
@@ -250,16 +260,15 @@ class _StatusLine extends StatelessWidget {
   final ValueChanged<StatusAction> onAction;
   const _StatusLine({super.key, required this.view, required this.coord, required this.onAction});
 
-  static const _avatar = 24.0;
+  static const _avatar = 34.0;
 
   Widget? _lead() {
     final v = view;
     switch (v.kind) {
-      case StatusKind.kicked:
       case StatusKind.problem:
         final error = v.tone == HealthSeverity.error;
         return Icon(error ? Icons.error_outline_rounded : Icons.warning_amber_rounded,
-            size: 18, color: error ? Colors.redAccent.shade100 : Colors.amber);
+            size: 20, color: error ? Colors.redAccent.shade100 : Colors.amber);
       case StatusKind.reconnecting:
         return const _Spinner(color: Colors.amber);
       case StatusKind.connecting:
@@ -268,6 +277,7 @@ class _StatusLine extends StatelessWidget {
         return null;
       case StatusKind.loading:
       case StatusKind.you:
+      case StatusKind.cannotPlay:
       case StatusKind.waiting:
         final r = coord.serverState.value;
         final infos = [
@@ -275,9 +285,26 @@ class _StatusLine extends StatelessWidget {
             v.self ? selfAvatarInfo(ready: m.ready, host: m.host) : memberAvatarInfo(m, r, coord),
         ];
         if (infos.isEmpty) return null;
-        return infos.length == 1
+        final avatar = infos.length == 1
             ? StatusAvatar(info: infos.first, size: _avatar, badges: false)
             : AvatarStack(members: infos, shown: 4, size: _avatar);
+        if (v.progress == null) return avatar;
+        // Loading: the progress runs round the avatar.
+        return Stack(
+          alignment: Alignment.center,
+          children: [
+            avatar,
+            SizedBox.square(
+              dimension: _avatar + 6,
+              child: CircularProgressIndicator(
+                value: v.progress,
+                strokeWidth: 2.5,
+                color: Colors.white,
+                backgroundColor: Colors.white24,
+              ),
+            ),
+          ],
+        );
     }
   }
 
@@ -285,43 +312,45 @@ class _StatusLine extends StatelessWidget {
   Widget build(BuildContext context) {
     final v = view;
     final lead = _lead();
+    final avatars = v.who.isNotEmpty;
     final action = v.action == StatusAction.ready ? null : v.action;
     return Padding(
-      padding: EdgeInsets.fromLTRB(lead == null ? 16 : 6, 6, action == null ? 16 : 6, 6),
+      padding: EdgeInsets.fromLTRB(lead == null ? 18 : (avatars ? 5 : 14), 5, action == null ? 18 : 6, 5),
       child: Row(
         mainAxisSize: MainAxisSize.min,
         children: [
           if (lead != null) ...[
-            SizedBox(height: _avatar, child: Center(child: lead)),
-            const SizedBox(width: 8),
+            SizedBox(height: _avatar + 6, child: Center(child: lead)),
+            SizedBox(width: avatars ? 10 : 8),
           ],
           Flexible(
-            child: Text(
+            child: ConstrainedBox(
+              constraints: const BoxConstraints(minHeight: _avatar),
+              child: Column(
+                mainAxisSize: MainAxisSize.min,
+                mainAxisAlignment: MainAxisAlignment.center,
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Text(
                     v.text,
                     key: const ValueKey('player-status-text'),
                     maxLines: 1,
                     overflow: TextOverflow.ellipsis,
-              style: const TextStyle(color: Colors.white, fontSize: 13, fontWeight: FontWeight.w600),
-            ),
-          ),
-          if (v.progress != null) ...[
-            const SizedBox(width: 8),
-            SizedBox.square(
-              dimension: 14,
-              child: CircularProgressIndicator(
-                value: v.progress,
-                strokeWidth: 2,
-                color: Colors.white,
-                backgroundColor: Colors.white24,
+                    style: const TextStyle(color: Colors.white, fontSize: 14, fontWeight: FontWeight.w600, height: 1.2),
                   ),
+                  if (v.detail != null)
+                    Text(
+                      v.detail!,
+                      maxLines: 1,
+                      overflow: TextOverflow.ellipsis,
+                      style: const TextStyle(color: Colors.white60, fontSize: 12, fontWeight: FontWeight.w500, height: 1.2),
                     ),
                 ],
-          if (v.detail != null) ...[
-            const SizedBox(width: 8),
-            Text(v.detail!, style: const TextStyle(color: Colors.white54, fontSize: 13, fontWeight: FontWeight.w500)),
-          ],
+              ),
+            ),
+          ),
           if (action != null) ...[
-            const SizedBox(width: 10),
+            const SizedBox(width: 12),
             _PillButton(
               label: action == StatusAction.cancel ? 'Cancel' : 'Retry',
               onPressed: () => onAction(action),

apps/desktop/lib/src/shell/profile_card.dart

@@ -78,10 +78,11 @@ class _ProfileCardState extends State<ProfileCard> {
           final coord = session.coordinator;
           final online = session.route.value == AppRoute.session;
           final self = online ? coord.selfMember.value : null;
-          final hosting = online && coord.hostFile != null;
+          final hosting = online && !session.solo.value && coord.hostFile != null;
           final color = _p.color.value;
           final png = _p.picture.value;
-          final me = selfAvatarInfo(ready: self?.ready ?? false, host: hosting);
+          final out = self?.out ?? false;
+          final me = selfAvatarInfo(ready: self?.ready ?? false, host: hosting, out: out);
           return Column(
             mainAxisSize: MainAxisSize.min,
             crossAxisAlignment: CrossAxisAlignment.stretch,
@@ -166,7 +167,8 @@ class _ProfileCardState extends State<ProfileCard> {
                               Pill(online ? 'in a server' : 'offline',
                                   online ? Colors.greenAccent : Colors.grey),
                               if (online)
-                                Pill((self?.ready ?? false) ? 'ready' : 'not ready', Colors.lightBlueAccent),
+                                Pill(out ? 'sitting out' : (self?.ready ?? false) ? 'ready' : 'not ready',
+                                    Colors.lightBlueAccent),
                             ],
                           ),
                         ],
@@ -237,6 +239,16 @@ class _ProfileCardState extends State<ProfileCard> {
               Padding(
                 padding: const EdgeInsets.symmetric(vertical: 6),
                 child: Column(children: [
+                  if (self != null)
+                    _link(
+                      out ? Icons.login_rounded : Icons.event_seat_outlined,
+                      out ? 'Join back' : 'Sit out',
+                      trailing: Text(out ? 'Space' : 'stay in the server', style: small),
+                      onTap: () {
+                        out ? coord.joinBack() : coord.sitOut();
+                        Navigator.of(context).maybePop();
+                      },
+                    ),
                   _link(
                     Icons.extension_outlined,
                     'Jellyfin & integrations',

apps/desktop/lib/src/shell/session_player.dart

@@ -1,3 +1,7 @@
+import 'dart:async';
+import 'dart:math' as math;
+
+import 'package:flutter/foundation.dart' show ValueListenable;
 import 'package:flutter/gestures.dart' show kPrimaryMouseButton;
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
@@ -10,7 +14,10 @@ import '../controls/player_settings.dart';
 import '../controls/uosc/buttons.dart';
 import '../controls/uosc/controls.dart';
 import '../controls/uosc/timeline.dart';
-import '../playback/media_marks.dart' show SkipOffer, formatClock;
+import '../controls/uosc/volume_flash.dart';
+import '../controls/volume.dart';
+import '../queue/queue_ui.dart';
+import '../playback/media_marks.dart' show SkipKind, SkipOffer, formatClock;
 import '../screens/session/jellyfin_widgets.dart';
 import '../screens/session/player_controls.dart';
 import '../session/session_coordinator.dart';
@@ -18,13 +25,15 @@ import '../shaders/shader_menu.dart';
 import '../shaders/shader_presets.dart';
 import '../state/session_state.dart';
 import '../state/settings.dart';
-import '../widgets/shown_frame_probe.dart';
+import '../widgets/app_keys.dart';
 import '../widgets/text_focus.dart';
 import '../widgets/window_buttons.dart';
 import 'avatar.dart';
+import 'mark_problem.dart';
 import 'motion.dart';
 import 'now_playing_title.dart';
 import 'player_status.dart';
+import 'sit_out_card.dart';
 import 'start_banner.dart';
 
 /// Where the session's video is shown: nowhere, the floating mini player,
@@ -87,7 +96,6 @@ class _SessionPlayerState extends State<SessionPlayer> {
   // `Video` (it never swaps controllers in place).
   var _videoGen = -1;
   var _videoKey = GlobalKey<VideoState>();
-  final _frameProbe = ShownFrameProbe();
   final _noFocus = FocusNode(skipTraversal: true, canRequestFocus: false);
   DateTime? _lastKeyAt;
   late final void Function() _stopShaderWatch;
@@ -96,9 +104,16 @@ class _SessionPlayerState extends State<SessionPlayer> {
   int _toastSeq = 0;
   int _shaderNoticeSeen = 0;
   bool _miniHover = false;
-  // Whether the standard controls are up (tracked like media_kit does:
-  // shown on mount and on mouse movement, hidden 3 s later or on exit).
-  final _standardShown = ValueNotifier(true);
+  // Whether the controls are up: the standard ones tracked like media_kit
+  // does (shown on mount and on mouse movement, hidden 3 s later or on
+  // exit), the uosc ones reporting it.
+  final _controlsShown = ValueNotifier(true);
+  // The mouse on a floating element, or the Up next popover open, keeps
+  // the controls up.
+  final _hold = ControlsHold();
+  // Ticks on each wheel / key volume step: flashes the volume readout.
+  final _volumeFlash = ValueNotifier(0);
+  late final void Function() _stopPopoverWatch;
 
   SessionCoordinator get _coord => SessionState.instance.coordinator;
   bool get _full => widget.mode == PlayerMode.full;
@@ -107,8 +122,9 @@ class _SessionPlayerState extends State<SessionPlayer> {
   void initState() {
     super.initState();
     _coord.jellyfin.ensureLoaded();
-    _coord.playback.shownFrame = _frameProbe.sample;
     HardwareKeyboard.instance.addHandler(_globalKey);
+    // Tab (AppKeys) reaches the chat through here in fullscreen.
+    AppKeys.addChatToggle(_toggleChat);
     // Shader messages (preset changes, load failures) become toasts.
     _shaderNoticeSeen = _coord.playback.shaderNotice.peek()?.id ?? 0;
     _stopShaderWatch = effect(() {
@@ -117,16 +133,21 @@ class _SessionPlayerState extends State<SessionPlayer> {
       _shaderNoticeSeen = n.id;
       _toast(n.text);
     });
+    _stopPopoverWatch = effect(() {
+      _hold.set(#upNextPopover, _coord.queue.popoverOpen.value);
+    });
   }
 
   @override
   void dispose() {
     HardwareKeyboard.instance.removeHandler(_globalKey);
-    final playback = _coord.playback;
-    if (playback.shownFrame == _frameProbe.sample) playback.shownFrame = null;
+    AppKeys.removeChatToggle(_toggleChat);
     _stopShaderWatch();
+    _stopPopoverWatch();
     _noFocus.dispose();
-    _standardShown.dispose();
+    _controlsShown.dispose();
+    _hold.dispose();
+    _volumeFlash.dispose();
     super.dispose();
   }
 
@@ -146,16 +167,32 @@ class _SessionPlayerState extends State<SessionPlayer> {
   /// and applied live. A null quality keeps the saved one.
   void _pickShader(ShaderPreset preset, ShaderQuality? quality) => applyShaderChoice(preset, quality);
 
+  /// One volume step up (+1) or down (-1), from the wheel or ↑ / ↓;
+  /// flashes the design's volume readout.
+  void _stepVolume(int step) {
+    final player = _coord.playback.player;
+    player.setVolume(stepVolume(player.state.volume, step * volumeStep));
+    _volumeFlash.value++;
+  }
+
   void _toggleChat() {
     _coord.markInput();
     widget.onToggleChat();
   }
 
   /// The player keys, while the player fills the body and nothing (a
-  /// dialog, a card, a text field) is in front of it.
+  /// dialog, a card, a text field) is in front of it. Space and Tab are
+  /// app-wide ([AppKeys]).
   bool _globalKey(KeyEvent event) {
-    if (event is! KeyDownEvent || !mounted || !_full) return false;
+    if (event is! KeyDownEvent || !mounted) return false;
     if (SessionState.instance.route.peek() != AppRoute.session) return false;
+    // Mini: Esc is the last step out, asking to leave the server.
+    if (!_full) {
+      if (event.logicalKey != LogicalKeyboardKey.escape) return false;
+      if (ModalRoute.of(context)?.isCurrent == false || textInputFocused()) return false;
+      widget.onLeave();
+      return true;
+    }
     final route = ModalRoute.of(context);
     if (route != null && !route.isCurrent) {
       // A menu of ours is open: Esc closes it.
@@ -184,14 +221,15 @@ class _SessionPlayerState extends State<SessionPlayer> {
       _reloadVideo();
       return true;
     }
-    if (key == LogicalKeyboardKey.space) {
-      _lastKeyAt = now;
-      coord.toggleReady();
-      return true;
-    }
     // mpv's playlist keys (< >) and Shift+P / Shift+N: Jellyfin episodes.
     final shift = HardwareKeyboard.instance.isShiftPressed;
     if (event.character == '>' || (shift && key == LogicalKeyboardKey.keyN)) {
+      // Up next first, then the next episode.
+      if (coord.queue.items.peek().isNotEmpty) {
+        _lastKeyAt = now;
+        coord.queue.skip();
+        return true;
+      }
       if (coord.nextEpisode.peek() == null) return false;
       _lastKeyAt = now;
       coord.playNextEpisode();
@@ -213,9 +251,8 @@ class _SessionPlayerState extends State<SessionPlayer> {
       coord.skipForward();
       return true;
     }
-    if (key == LogicalKeyboardKey.tab) {
-      _lastKeyAt = now;
-      _toggleChat();
+    if (key == LogicalKeyboardKey.arrowUp || key == LogicalKeyboardKey.arrowDown) {
+      _stepVolume(key == LogicalKeyboardKey.arrowUp ? 1 : -1);
       return true;
     }
     if (key == LogicalKeyboardKey.arrowRight) {
@@ -235,7 +272,8 @@ class _SessionPlayerState extends State<SessionPlayer> {
       } else if (widget.fullscreen) {
         widget.onToggleFullscreen();
       } else {
-        widget.onLeave();
+        // One step at a time: big player → mini, then (from mini) leave.
+        widget.onCollapse();
       }
       return true;
     }
@@ -270,22 +308,28 @@ class _SessionPlayerState extends State<SessionPlayer> {
           }
           final VideoControlsBuilder? controls = _full ? _sessionControls : null;
           final video = widget.videoBuilder?.call(context, controls) ?? _video(controls);
-          return Stack(
+          // The wheel anywhere on the full player steps the volume
+          // (lists, menus and popovers under the mouse scroll instead).
+          return VolumeWheel(
+            enabled: _full,
+            onStep: _stepVolume,
+            child: Stack(
               fit: StackFit.expand,
               children: [
-              // The frozen-picture watchdog captures this boundary: the
-              // video (and its controls), not the window around it.
-              RepaintBoundary(
-                child: Stack(fit: StackFit.expand, children: [video, _frameProbe.anchor()]),
-              ),
+                video,
                 if (_full) ...[
-                _status(),
                   _progressLine(),
-                _jellyfinOverlay(),
-                if (widget.fullscreen) _pausedParty(),
+                  _blockedCard(),
+                  _actionArea(),
+                  if (widget.fullscreen) ...[if (!SessionState.instance.solo.value) _pausedParty(), _unreadChip()],
+                  _volumeReadout(),
                 ] else
                   _miniOverlay(),
+                // Sitting out: nothing is loaded; the card covers the
+                // empty player (which stays mounted for joining back).
+                if (_coord.selfOut.value) _sitOut(),
               ],
+            ),
           );
         }),
       ),
@@ -340,7 +384,7 @@ class _SessionPlayerState extends State<SessionPlayer> {
             final s = AppSettings.instance;
             if (s.mpvControls.value || !s.progressLine.value) return const SizedBox.shrink();
             return ValueListenableBuilder<bool>(
-              valueListenable: _standardShown,
+              valueListenable: _controlsShown,
               builder: (context, shown, _) => shown
                   ? const SizedBox.shrink()
                   : const _MiniSeekBar(key: ValueKey('progress-line-standard'), thin: true),
@@ -374,6 +418,11 @@ class _SessionPlayerState extends State<SessionPlayer> {
               child: Row(
                 children: [
                   const Expanded(child: NowPlayingTitle()),
+                  UpNextButton(
+                      queue: coord.queue,
+                      onPlayNextEpisode: coord.playNextEpisode,
+                      look: UpNextLook.standard,
+                      hold: _hold),
                   MaterialDesktopCustomButton(
                     icon: const Icon(Icons.video_library_outlined),
                     onPressed: widget.onChangeVideo,
@@ -437,7 +486,7 @@ class _SessionPlayerState extends State<SessionPlayer> {
           onPressed: coord.playNextEpisode,
         ),
       ),
-      const MaterialDesktopVolumeButton(),
+      VolumeButton(player: playback.player, focusNode: _noFocus),
       _ReadyControlButton(focusNode: _noFocus),
       _BarTextButton(
         focusNode: _noFocus,
@@ -504,8 +553,9 @@ class _SessionPlayerState extends State<SessionPlayer> {
   Widget _controlsSwitch(VideoState state) {
     return SessionControlsSwitch(
       material: (_) => ControlsHoverProbe(
-        shown: _standardShown,
+        shown: _controlsShown,
         hideAfter: _controlsHide,
+        hold: _hold,
         child: DoubleClickListener(
           onDoubleClick: widget.onToggleFullscreen,
           // Clicks on the bars are button clicks, not the video.
@@ -536,12 +586,23 @@ class _SessionPlayerState extends State<SessionPlayer> {
           );
         });
     return UoscControls(
+      shown: _controlsShown,
+      holdBy: _hold,
       onDoubleTap: widget.onToggleFullscreen,
       topLeft: const NowPlayingTitle(),
+      // Up next is one of the top bar's controls, before chat.
       top: Row(
         mainAxisSize: MainAxisSize.min,
         children: [
-          UoscButton(icon: Icons.chat_bubble_outline_rounded, tooltip: 'Chat & activity (Tab)', onPressed: _toggleChat),
+          UpNextButton(
+              queue: coord.queue, onPlayNextEpisode: coord.playNextEpisode, look: UpNextLook.uosc, hold: _hold),
+          UoscButton(
+            key: const ValueKey('uosc-chat'),
+            icon: widget.chatOpen ? Icons.chat_bubble_rounded : Icons.chat_bubble_outline_rounded,
+            tooltip: 'Chat & activity (Tab)',
+            badge: widget.unread,
+            onPressed: _toggleChat,
+          ),
           UoscButton(
             icon: widget.fullscreen ? Icons.fullscreen_exit_rounded : Icons.close_fullscreen_rounded,
             tooltip: widget.fullscreen ? 'Exit fullscreen (Esc)' : 'Back to the library (keeps playing)',
@@ -567,6 +628,7 @@ class _SessionPlayerState extends State<SessionPlayer> {
             (title: 'Change video', hint: null, run: widget.onChangeVideo),
             (title: 'Chat & activity', hint: 'Tab', run: _toggleChat),
             (title: 'Reload video', hint: 'Ctrl+R', run: _reloadVideo),
+            (title: 'Mark a problem', hint: 'Ctrl+Shift+B', run: () => showMarkProblem(context)),
             (title: 'Mark everyone ready', hint: null, run: coord.forcePlayAll),
             (title: 'Fullscreen', hint: 'F', run: widget.onToggleFullscreen),
             (title: 'Leave server', hint: 'Esc', run: widget.onLeave),
@@ -647,70 +709,183 @@ class _SessionPlayerState extends State<SessionPlayer> {
     );
   }
 
-  /// The one status pill, bottom centre above the controls.
-  Widget _status() =>
-      const Positioned(left: 16, right: 16, bottom: 124, child: Center(child: PlayerStatus()));
+  /// The side inset every floating element keeps (the bars' own), and
+  /// the gap between them and the controls.
+  static const _edge = 16.0;
 
-  /// Jellyfin: the blocked card, the end-of-episode card (countdown) and
-  /// the "Next episode" pill; for any media the skip pill (Skip OP / ED /
-  /// 1:30) above it. Outside the auto-hiding controls, so they stay up.
-  Widget _jellyfinOverlay() {
+  /// The bottom controls' height in the design in use.
+  static double _bottomControlsHeight(bool uosc) => uosc
+      ? UoscControls.buttonRowHeight + UoscControls.rowBottomPadding + UoscTimeline.height
+      : _barHeight + ChapterSeekBar.height;
+
+  /// The volume flash after a wheel or key step, in the design in use:
+  /// uosc's vertical slider at the right edge (centred between the top
+  /// buttons and the bottom controls, as uosc places it), else a pill
+  /// under the top bar.
+  Widget _volumeReadout() {
+    final playback = _coord.playback;
+    Widget withVolume(Widget Function(double v) build) => StreamBuilder<double>(
+          stream: playback.player.stream.volume,
+          initialData: playback.player.state.volume,
+          builder: (context, v) => build(v.data ?? 100),
+        );
+    return SignalBuilder(builder: (context) {
+      if (AppSettings.instance.mpvControls.value) {
+        const top = 12 + UoscControls.buttonRowHeight;
+        final bottom = _bottomControlsHeight(true);
+        return Positioned(
+          right: UoscVolumeSlider.width / 2,
+          top: top,
+          bottom: bottom,
+          width: UoscVolumeSlider.width,
+          child: LayoutBuilder(builder: (context, c) {
+            final h = UoscVolumeSlider.heightFor(c.maxHeight);
+            if (h <= UoscVolumeSlider.width) return const SizedBox.shrink();
+            return Align(
+              // Centred with the mute button's room below, like uosc.
+              alignment: Alignment.center,
+              child: Padding(
+                padding: const EdgeInsets.only(bottom: UoscVolumeSlider.width),
+                child: SizedBox(
+                  height: h,
+                  child: VolumeFlash(
+                    trigger: _volumeFlash,
+                    builder: (context) => withVolume((v) => UoscVolumeSlider(volume: v)),
+                  ),
+                ),
+              ),
+            );
+          }),
+        );
+      }
+      return Positioned(
+        left: 0,
+        right: 0,
+        top: _topBarHeight + 8,
+        child: Center(
+          child: VolumeFlash(
+            trigger: _volumeFlash,
+            builder: (context) => withVolume((v) => VolumeReadout(volume: v)),
+          ),
+        ),
+      );
+    });
+  }
+
+  /// The action area: one band above the bottom controls for everything
+  /// that floats there. The status pill (the ready prompt among it)
+  /// centred; at the right edge the end cards, else the action pills
+  /// (Skip OP / ED / 1:30 over Next episode). It rides on the controls:
+  /// just above them while they are up, down near the edge while they are
+  /// hidden. The mouse on any of it counts as the mouse on the controls
+  /// ([ControlsHold]).
+  Widget _actionArea() {
+    return SignalBuilder(builder: (context) {
+      final controls = _bottomControlsHeight(AppSettings.instance.mpvControls.value);
+      return ValueListenableBuilder<bool>(
+        valueListenable: _controlsShown,
+        builder: (context, shown, child) => AnimatedPositioned(
+          duration: easeTime,
+          curve: ease,
+          left: _edge,
+          right: _edge,
+          top: 0,
+          bottom: shown ? controls + _edge : _edge,
+          child: child!,
+        ),
+        child: CustomMultiChildLayout(
+          delegate: _ActionAreaLayout(gap: _edge),
+          children: [
+            LayoutId(id: _ActionSlot.status, child: ControlsHoldRegion(hold: _hold, child: const PlayerStatus())),
+            LayoutId(id: _ActionSlot.side, child: _actionSide()),
+          ],
+        ),
+      );
+    });
+  }
+
+  /// The action area's right end: the end-of-media card (Up next, else the
+  /// next episode; it stays up), else the pills, shown only with the
+  /// controls ([PillGate]).
+  Widget _actionSide() {
     final coord = _coord;
-    return Positioned.fill(
-      child: SignalBuilder(
+    return SignalBuilder(
       builder: (context) {
-          final blocked = coord.jellyfinBlocked.value;
         final next = coord.nextEpisode.value;
         final countdown = coord.autoAdvance.value;
+        // Up next goes before the next episode.
+        final upNext = coord.queue.countdown.value;
         final finished = coord.serverState.value?.transport == 'finished';
         final pill = coord.nextPromptVisible.value;
         final SkipOffer? skip = coord.skipOffer.value;
         final showNext = next != null && pill;
-          return Stack(
-            children: [
-              if (blocked != null)
-                Center(
-                  child: JellyfinBlockedCard(
-                    blocked: blocked,
-                    onLinkAccount: widget.onOpenIntegrations,
-                    onRetry: coord.retryJellyfin,
-                  ),
-                ),
-              if (next != null && (finished || countdown != null))
-                Positioned(
-                  right: 24,
-                  bottom: 138,
+        if (upNext != null && finished) {
+          return ControlsHoldRegion(hold: _hold, child: UpNextCard(queue: coord.queue, countdown: upNext));
+        }
+        // "Clear" in Up next hides the next episode for this media.
+        if (next != null && (finished || countdown != null) && coord.queue.shownContinuation.value.isNotEmpty) {
+          return ControlsHoldRegion(
+            hold: _hold,
             child: EndOfEpisodeCard(
               next: next,
               countdown: countdown,
               onPlayNow: coord.playNextEpisode,
               onCancel: coord.cancelAutoAdvance,
             ),
-                )
-              else if (showNext || skip != null)
-                Positioned(
-                  right: 24,
-                  bottom: 124,
-                  child: Column(
+          );
+        }
+        if (!showNext && skip == null) return const SizedBox.shrink();
+        return Column(
+          mainAxisSize: MainAxisSize.min,
           crossAxisAlignment: CrossAxisAlignment.end,
-                    spacing: 10,
+          spacing: 8,
           children: [
-                      if (skip != null) SkipPill(offer: skip, onPressed: () => coord.skip(skip)),
-                      if (showNext) NextEpisodePill(episode: next, onPressed: coord.playNextEpisode),
-                    ],
+            if (skip != null)
+              PillGate(
+                key: const ValueKey('skip-gate'),
+                kind: skip.kind,
+                // Skip ED: no announcing, only with the controls.
+                announce: skip.kind != SkipKind.ending,
+                controlsShown: _controlsShown,
+                hold: _hold,
+                child: SkipPill(offer: skip, onPressed: () => coord.skip(skip)),
               ),
+            if (showNext)
+              PillGate(
+                key: const ValueKey('next-gate'),
+                kind: next,
+                controlsShown: _controlsShown,
+                hold: _hold,
+                child: NextEpisodePill(episode: next, onPressed: coord.playNextEpisode),
               ),
           ],
         );
       },
-      ),
     );
   }
 
+  /// Jellyfin refused this viewer: the card in the middle (it stays up).
+  Widget _blockedCard() => Positioned.fill(
+        child: SignalBuilder(builder: (context) {
+          final blocked = _coord.jellyfinBlocked.value;
+          if (blocked == null) return const SizedBox.shrink();
+          return Center(
+            child: ControlsHoldRegion(
+              hold: _hold,
+              child: JellyfinBlockedCard(
+                blocked: blocked,
+                onLinkAccount: widget.onOpenIntegrations,
+                onRetry: _coord.retryJellyfin,
+              ),
+            ),
+          );
+        }),
+      );
+
   /// Fullscreen hides the strip: while paused the party stays in a corner.
   Widget _pausedParty() => Positioned(
-        right: 16,
-        top: _barHeight + 8,
+        right: _edge,
+        top: _topBarHeight + 8,
         child: PartyWatch(builder: (context) {
           final r = _coord.serverState.value;
           final paused = r != null && r.transport != 'playing';
@@ -723,6 +898,75 @@ class _SessionPlayerState extends State<SessionPlayer> {
         }),
       );
 
+  /// Fullscreen hides the strip and its chat badge: while there is unread
+  /// chat, the controls are down and the video is not playing, a small
+  /// glass chip says so top right (while it plays, only the controls' chat
+  /// button shows the count: nothing sits on the picture).
+  Widget _unreadChip() => Positioned(
+        right: _edge,
+        top: _edge,
+        child: IgnorePointer(
+          child: ValueListenableBuilder<bool>(
+            valueListenable: _controlsShown,
+            builder: (context, shown, _) => SignalBuilder(builder: (context) {
+              final playing = _coord.serverState.value?.transport == 'playing';
+              final on = widget.unread > 0 && !widget.chatOpen && !shown && !playing;
+              return AnimatedOpacity(
+                duration: easeTime,
+                curve: ease,
+                opacity: on ? 1 : 0,
+                child: PlayerGlass(
+                  key: const ValueKey('unread-chip'),
+                  child: Padding(
+                    padding: const EdgeInsets.symmetric(horizontal: 10, vertical: 5),
+                    child: Row(
+                      mainAxisSize: MainAxisSize.min,
+                      children: [
+                        const Icon(Icons.chat_bubble_rounded, size: 14, color: Colors.white70),
+                        const SizedBox(width: 6),
+                        Text('${widget.unread}', style: const TextStyle(color: Colors.white, fontSize: 12)),
+                      ],
+                    ),
+                  ),
+                ),
+              );
+            }),
+          ),
+        ),
+      );
+
+  /// [SitOutCard] with the mini's (or the full player's) expand /
+  /// collapse and close.
+  Widget _sitOut() => Positioned.fill(
+        child: Stack(
+          fit: StackFit.expand,
+          children: [
+            SitOutCard(key: const ValueKey('sit-out-card'), compact: !_full),
+            Positioned(
+              top: 4,
+              right: 4,
+              child: Row(
+                mainAxisSize: MainAxisSize.min,
+                children: [
+                  IconButton(
+                    focusNode: _noFocus,
+                    onPressed: _full ? widget.onCollapse : widget.onExpand,
+                    tooltip: _full ? 'Small player' : 'Expand',
+                    icon: Icon(_full ? Icons.close_fullscreen : Icons.open_in_full, color: Colors.white, size: 18),
+                  ),
+                  IconButton(
+                    focusNode: _noFocus,
+                    onPressed: widget.onClose,
+                    tooltip: 'Close the player',
+                    icon: const Icon(Icons.close, color: Colors.white, size: 18),
+                  ),
+                ],
+              ),
+            ),
+          ],
+        ),
+      );
+
   /// Mini: title, expand and close on hover; ready, time and a seekable
   /// bar at the bottom. A thin progress line stays while not hovered.
   Widget _miniOverlay() {
@@ -762,7 +1006,7 @@ class _SessionPlayerState extends State<SessionPlayer> {
                         IconButton(
                           focusNode: _noFocus,
                           onPressed: widget.onClose,
-                          tooltip: 'Stop watching (stay in the server)',
+                          tooltip: 'Sit out (stay in the server)',
                           icon: const Icon(Icons.close, color: Colors.white, size: 18),
                         ),
                       ],
@@ -809,6 +1053,110 @@ class _SessionPlayerState extends State<SessionPlayer> {
   }
 }
 
+/// A floating pill's visibility: only while the controls are up (the
+/// mouse moved) or the mouse is on it. With [announce] it is also up for
+/// [firstShown] whenever [kind] changes (a new offer: Skip OP, Skip 1:30).
+/// Gone with the offer (the parent drops it). The mouse on it holds
+/// [hold]: it counts as the mouse on the controls.
+class PillGate extends StatefulWidget {
+  static const firstShown = Duration(seconds: 5);
+  final Object kind;
+  final bool announce;
+  final ValueListenable<bool> controlsShown;
+  final ControlsHold? hold;
+  final Widget child;
+  const PillGate({
+    super.key,
+    required this.kind,
+    this.announce = false,
+    required this.controlsShown,
+    this.hold,
+    required this.child,
+  });
+
+  @override
+  State<PillGate> createState() => _PillGateState();
+}
+
+class _PillGateState extends State<PillGate> {
+  Object? _kind;
+  bool _fresh = false;
+  bool _hover = false;
+  Timer? _timer;
+
+  @override
+  void initState() {
+    super.initState();
+    _arm();
+  }
+
+  @override
+  void didUpdateWidget(PillGate old) {
+    super.didUpdateWidget(old);
+    if (widget.kind != _kind) _arm();
+  }
+
+  @override
+  void dispose() {
+    _timer?.cancel();
+    super.dispose();
+  }
+
+  void _arm() {
+    _kind = widget.kind;
+    _timer?.cancel();
+    _fresh = widget.announce;
+    if (!_fresh) return;
+    _timer = Timer(PillGate.firstShown, () {
+      if (mounted) setState(() => _fresh = false);
+    });
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    // The pill covers the controls' hover area: on it, [hold] keeps them
+    // up (and it stays while the mouse is on it).
+    return ValueListenableBuilder<bool>(
+      valueListenable: widget.controlsShown,
+      builder: (context, shown, child) {
+        final on = _fresh || shown || _hover;
+        return IgnorePointer(
+          ignoring: !on,
+          child: MouseRegion(
+            onEnter: (_) => setState(() => _hover = true),
+            onExit: (_) => setState(() => _hover = false),
+            child: AnimatedOpacity(duration: easeTime, curve: ease, opacity: on ? 1 : 0, child: child),
+          ),
+        );
+      },
+      child: ControlsHoldRegion(hold: widget.hold, child: widget.child),
+    );
+  }
+}
+
+enum _ActionSlot { status, side }
+
+/// The action area's two slots, at its bottom: [_ActionSlot.side] at the
+/// right end, [_ActionSlot.status] centred, moved left only as far as it
+/// must to keep [gap] from the side (and never wider than what is left).
+class _ActionAreaLayout extends MultiChildLayoutDelegate {
+  final double gap;
+  _ActionAreaLayout({required this.gap});
+
+  @override
+  void performLayout(Size size) {
+    final side = layoutChild(_ActionSlot.side, BoxConstraints.loose(size));
+    positionChild(_ActionSlot.side, Offset(size.width - side.width, size.height - side.height));
+    final room = side.width > 0 ? size.width - side.width - gap : size.width;
+    final status = layoutChild(_ActionSlot.status, BoxConstraints.loose(Size(math.max(0, room), size.height)));
+    final x = math.min((size.width - status.width) / 2, room - status.width);
+    positionChild(_ActionSlot.status, Offset(math.max(0, x), size.height - status.height));
+  }
+
+  @override
+  bool shouldRelayout(_ActionAreaLayout old) => old.gap != gap;
+}
+
 const _shaderKeys = [
   LogicalKeyboardKey.digit0,
   LogicalKeyboardKey.digit1,

apps/desktop/lib/src/shell/settings_tab.dart

@@ -1,14 +1,28 @@
+import 'dart:async';
+
+import 'dart:io';
+
+import 'package:file_picker/file_picker.dart';
 import 'package:flutter/material.dart';
+import 'package:fox_utils/fox_utils.dart' show DesktopDropX, DropTarget;
 import 'package:signals/signals_flutter.dart';
+import 'package:sync_relay_core/core.dart'
+    show CookieBrowser, CookieFile, NetscapeCookie, YtDlp, YtDlpCookies, cookieBrowsers, parseCookies;
 
 import '../controls/player_settings.dart';
 import '../jellyfin/accounts.dart';
 import '../jellyfin/accounts_panel.dart';
+import '../playback/yt_dlp_app.dart';
 import '../schedule/animeflow.dart';
 import '../screens/home/about_page.dart';
 import '../screens/home/settings_page.dart';
+import '../sfx/sfx.dart';
+import '../sfx/sound_bank.dart';
+import '../sfx/synth_sfx.dart';
 import '../state/session_state.dart';
+import '../state/settings.dart';
 import '../update/update_controller.dart';
+import '../widgets/app_menu.dart';
 import 'avatar.dart';
 import 'motion.dart';
 
@@ -73,7 +87,36 @@ class SettingsTab extends StatelessWidget {
           ),
         ];
       case SettingsSection.network:
-        return const [HostDefaultsPanel(), RecentServersPanel()];
+        return [
+          const HostDefaultsPanel(),
+          const RecentServersPanel(),
+          SettingsPanel(
+            title: 'Watching',
+            child: SignalBuilder(
+              builder: (context) => SwitchListTile(
+                key: const ValueKey('unready-on-swap'),
+                contentPadding: EdgeInsets.zero,
+                title: const Text('Unready when the video changes'),
+                subtitle: const Text('Otherwise you stay ready and the next video starts once everyone ready has buffered'),
+                value: AppSettings.instance.unreadyOnSwap.value,
+                onChanged: AppSettings.instance.setUnreadyOnSwap,
+              ),
+            ),
+          ),
+          SettingsPanel(
+            title: 'When idle',
+            child: SignalBuilder(
+              builder: (context) => SwitchListTile(
+                key: const ValueKey('idle-sits-out'),
+                contentPadding: EdgeInsets.zero,
+                title: const Text('When idle, sit out instead of just unready'),
+                subtitle: const Text('After 10 min away while ready and held, your player unloads the video until you join back (Space)'),
+                value: AppSettings.instance.idleSitsOut.value,
+                onChanged: AppSettings.instance.setIdleSitsOut,
+              ),
+            ),
+          ),
+        ];
       case SettingsSection.player:
         return [
           const SettingsHintCard(
@@ -85,6 +128,7 @@ class SettingsTab extends StatelessWidget {
             child: Column(crossAxisAlignment: CrossAxisAlignment.stretch, children: playerSettingRows()),
           ),
           const SettingsPanel(title: 'Custom shaders', child: CustomShaderFiles()),
+          const SettingsPanel(title: 'yt-dlp', child: YtDlpSettings()),
         ];
       case SettingsSection.integrations:
         final accounts = jellyfin ?? JellyfinAccounts.instance;
@@ -330,6 +374,289 @@ class RecentServersPanel extends StatelessWidget {
   }
 }
 
+/// The app's yt-dlp (web page links): its version, "Update now", and the
+/// last error.
+class YtDlpSettings extends StatefulWidget {
+  /// Defaults to [AppYtDlp.instance]'s.
+  final Future<YtDlp>? ytDlp;
+  const YtDlpSettings({super.key, this.ytDlp});
+
+  @override
+  State<YtDlpSettings> createState() => _YtDlpSettingsState();
+}
+
+class _YtDlpSettingsState extends State<YtDlpSettings> {
+  late final Future<YtDlp> _y = widget.ytDlp ?? AppYtDlp.instance.ytDlp;
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    return FutureBuilder<YtDlp>(
+      future: _y,
+      builder: (context, snap) {
+        final y = snap.data;
+        if (y == null) return const SizedBox.shrink();
+        return StreamBuilder<void>(
+          stream: y.changes,
+          builder: (context, _) {
+            final err = y.lastError;
+            return Column(
+              crossAxisAlignment: CrossAxisAlignment.stretch,
+              children: [
+                ListTile(
+                  contentPadding: EdgeInsets.zero,
+                  leading: const Icon(Icons.travel_explore),
+                  title: Text(y.busy
+                      ? 'Downloading…'
+                      : y.version == null
+                          ? 'Not downloaded yet'
+                          : 'Version ${y.version}'),
+                  subtitle: err == null
+                      ? null
+                      : Text(err, key: const ValueKey('ytdlp-error'), style: TextStyle(color: scheme.error)),
+                  trailing: TextButton(
+                    onPressed: y.busy
+                        ? null
+                        : () => y.path == null ? y.ensure() : y.update(force: true),
+                    child: const Text('Update now'),
+                  ),
+                ),
+                Text(
+                  'Plays links to web pages (YouTube, X, …) in all three link modes. '
+                  'Downloaded and kept up to date by the app; checked once a day.',
+                  style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12),
+                ),
+                const SizedBox(height: 12),
+                YtDlpCookieSettings(cookies: y.cookies),
+              ],
+            );
+          },
+        );
+      },
+    );
+  }
+}
+
+/// yt-dlp's cookies (sites that refuse guests): from a browser, or a
+/// cookies.txt / JSON export picked or dropped, filtered by site into the
+/// private copy in the yt-dlp folder (see [YtDlpCookies]).
+class YtDlpCookieSettings extends StatefulWidget {
+  final YtDlpCookies cookies;
+  const YtDlpCookieSettings({super.key, required this.cookies});
+
+  @override
+  State<YtDlpCookieSettings> createState() => _YtDlpCookieSettingsState();
+}
+
+class _YtDlpCookieSettingsState extends State<YtDlpCookieSettings> {
+  late var _source = widget.cookies.read();
+  String? _error;
+  bool _dragging = false;
+
+  void _reload([String? error]) {
+    if (!mounted) return;
+    setState(() {
+      _source = widget.cookies.read();
+      _error = error;
+    });
+  }
+
+  String get _summary => switch (_source) {
+        CookieFile f => '${f.count} cookie${f.count == 1 ? '' : 's'} for '
+            '${f.sites.length <= 3 ? f.sites.join(', ') : '${f.sites.length} sites'}',
+        CookieBrowser b => 'From ${b.browser}${b.profile.isEmpty ? '' : ' (profile ${b.profile})'}',
+        _ => 'No cookies: yt-dlp visits sites as a guest',
+      };
+
+  Future<void> _pickFile() async {
+    final List<PlatformFile> files;
+    try {
+      files = await FilePicker.pickFiles(
+        dialogTitle: 'Pick a cookies.txt or a JSON cookie export',
+        type: FileType.custom,
+        allowedExtensions: const ['txt', 'json'],
+      );
+    } catch (_) {
+      _reload('file dialog unavailable — try again');
+      return;
+    }
+    final path = files.firstOrNull?.path;
+    if (path != null) await _importFile(path);
+  }
+
+  Future<void> _importFile(String path) async {
+    final List<NetscapeCookie> all;
+    try {
+      all = parseCookies(await File(path).readAsString());
+    } on FormatException catch (e) {
+      _reload("Can't read that file: ${e.message}");
+      return;
+    } on FileSystemException catch (e) {
+      _reload("Can't read that file: ${e.message}");
+      return;
+    }
+    if (!mounted) return;
+    // Every site in the file: an export is "my logins", not a pick list.
+    try {
+      await widget.cookies.saveFile(all);
+      _reload();
+    } catch (e) {
+      _reload('Could not keep the cookies: $e');
+    }
+  }
+
+  Future<void> _pickBrowser() async {
+    final current = _source;
+    final picked = await showDialog<CookieBrowser>(
+      context: context,
+      builder: (_) => _CookieBrowserDialog(initial: current is CookieBrowser ? current : null),
+    );
+    if (picked == null) return;
+    try {
+      await widget.cookies.saveBrowser(picked.browser, picked.profile);
+      _reload();
+    } catch (e) {
+      _reload('Could not save: $e');
+    }
+  }
+
+  Future<void> _remove() async {
+    try {
+      await widget.cookies.remove();
+      _reload();
+    } catch (e) {
+      _reload('Could not remove the cookies: $e');
+    }
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    return DropTarget(
+      onDragEntered: (_) => setState(() => _dragging = true),
+      onDragExited: (_) => setState(() => _dragging = false),
+      onDragDone: (d) {
+        setState(() => _dragging = false);
+        final path = DesktopDropX.pathsOf(d.files).firstOrNull;
+        if (path != null) _importFile(path);
+      },
+      child: AnimatedContainer(
+        duration: const Duration(milliseconds: 150),
+        padding: const EdgeInsets.all(8),
+        decoration: BoxDecoration(
+          borderRadius: BorderRadius.circular(12),
+          border: Border.all(color: _dragging ? scheme.primary : scheme.outlineVariant),
+        ),
+        child: Column(
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            ListTile(
+              contentPadding: EdgeInsets.zero,
+              leading: const Icon(Icons.cookie_outlined),
+              title: const Text('Cookies'),
+              subtitle: Text(_summary, key: const ValueKey('ytdlp-cookies-summary')),
+            ),
+            if (_error != null)
+              Text(_error!, key: const ValueKey('ytdlp-cookies-error'), style: TextStyle(color: scheme.error)),
+            Wrap(
+              spacing: 8,
+              runSpacing: 8,
+              children: [
+                OutlinedButton.icon(
+                  onPressed: _pickBrowser,
+                  icon: const Icon(Icons.public),
+                  label: const Text('From a browser…'),
+                ),
+                OutlinedButton.icon(
+                  onPressed: _pickFile,
+                  icon: const Icon(Icons.file_open_outlined),
+                  label: const Text('From a file…'),
+                ),
+                if (_source != null)
+                  TextButton(
+                    key: const ValueKey('ytdlp-cookies-remove'),
+                    onPressed: _remove,
+                    child: const Text('Remove cookies'),
+                  ),
+              ],
+            ),
+            const SizedBox(height: 8),
+            Text(
+              'For sites that refuse guests (Bilibili, YouTube asking to sign in). Drop a cookies.txt or a '
+              'cookie-extension JSON export here, or pick one; all of it is kept, on this computer only. '
+              'Cookies log yt-dlp in as you on those sites. Keep the file private; for YouTube consider a '
+              'throwaway account (Google may flag accounts used with yt-dlp).',
+              style: TextStyle(color: scheme.onSurfaceVariant, fontSize: 12),
+            ),
+          ],
+        ),
+      ),
+    );
+  }
+}
+
+class _CookieBrowserDialog extends StatefulWidget {
+  final CookieBrowser? initial;
+  const _CookieBrowserDialog({this.initial});
+
+  @override
+  State<_CookieBrowserDialog> createState() => _CookieBrowserDialogState();
+}
+
+class _CookieBrowserDialogState extends State<_CookieBrowserDialog> {
+  late var _browser = widget.initial?.browser ?? cookieBrowsers.first;
+  late final _profile = TextEditingController(text: widget.initial?.profile ?? '');
+
+  @override
+  void dispose() {
+    _profile.dispose();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    return AlertDialog(
+      title: const Text('Cookies from a browser'),
+      content: SizedBox(
+        width: 380,
+        child: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.stretch,
+          children: [
+            Row(
+              children: [
+                const Expanded(child: Text('Browser')),
+                AppSelect<String>(
+                  value: _browser,
+                  items: [for (final b in cookieBrowsers) (b, b)],
+                  onChanged: (v) => setState(() => _browser = v),
+                ),
+              ],
+            ),
+            const SizedBox(height: 12),
+            TextField(
+              controller: _profile,
+              decoration: const InputDecoration(labelText: 'Profile (optional)', hintText: 'the default profile'),
+            ),
+            const SizedBox(height: 12),
+            Text(
+              'yt-dlp reads them each time it opens a link (the browser may need to be closed on Windows).',
+              style: TextStyle(color: Theme.of(context).colorScheme.onSurfaceVariant, fontSize: 12),
+            ),
+          ],
+        ),
+      ),
+      actions: [
+        TextButton(onPressed: () => Navigator.pop(context), child: const Text('Cancel')),
+        FilledButton(
+          onPressed: () => Navigator.pop(context, CookieBrowser(_browser, _profile.text.trim())),
+          child: const Text('Use'),
+        ),
+      ],
+    );
+  }
+}
+
 /// AnimeFlow (the Schedule tab's source): connected as whom, with which
 /// rights, or why not.
 class AnimeFlowCard extends StatefulWidget {
@@ -401,8 +728,8 @@ class _AnimeFlowCardState extends State<AnimeFlowCard> {
   }
 }
 
-/// What pops up and what makes a sound. No switches: there is nothing to
-/// choose yet.
+/// What pops up (chat pop-ups: [AppSettings.chatPopups]) and what makes
+/// a sound.
 class NotificationsInfo extends StatelessWidget {
   const NotificationsInfo({super.key});
 
@@ -424,18 +751,149 @@ class NotificationsInfo extends StatelessWidget {
           child: Column(
             crossAxisAlignment: CrossAxisAlignment.stretch,
             children: [
-              line('Joins, leaves, kicks, video changes and chat',
+              line('Joins, leaves and video changes',
                   'Pop up bottom left for 5 s, with the person\'s picture'),
-              line('Ready, seeks and pauses', 'Only in Chat & activity (Tab), never as a pop-up'),
-              line('App notices', 'Shader changes, a frozen video reloaded, the idle warning'),
+              Padding(
+                padding: const EdgeInsets.symmetric(vertical: 6),
+                child: Row(
+                  children: [
+                    Expanded(
+                      child: Column(
+                        crossAxisAlignment: CrossAxisAlignment.start,
+                        children: [
+                          const Text('Chat messages'),
+                          Text('Pop up the same way; always in Chat & activity (Tab)', style: muted),
                         ],
                       ),
                     ),
-        SettingsPanel(
-          title: 'Sounds',
-          child: line('No sounds yet', 'The app is silent; only the video makes noise'),
+                    SignalBuilder(
+                      builder: (context) => AppSelect<ChatPopups>(
+                        key: const ValueKey('chat-popups'),
+                        value: AppSettings.instance.chatPopups.value,
+                        onChanged: AppSettings.instance.setChatPopups,
+                        items: [for (final m in ChatPopups.values) (m, m.label)],
                       ),
+                    ),
+                  ],
+                ),
+              ),
+              line('Sat out or nudged by someone', 'Only on your end, with their picture'),
+              line('Ready, seeks and pauses', 'Only in Chat & activity (Tab), never as a pop-up'),
+              line('App notices', 'Shader changes, the idle warning'),
+            ],
+          ),
+        ),
+        const SettingsPanel(title: 'Sounds', child: SoundSettings()),
       ],
     );
   }
 }
+
+/// Volume and the sound set, then every sound with a preview button, its
+/// own set (or the overall one) and its own switch.
+class SoundSettings extends StatelessWidget {
+  const SoundSettings({super.key});
+
+  void _preview(SfxKind kind) {
+    final sfx = SessionState.instance.sfx;
+    if (sfx is SynthSfx) unawaited(sfx.preview(kind, readyIndex: 2));
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final s = AppSettings.instance;
+    final scheme = Theme.of(context).colorScheme;
+    final muted = TextStyle(color: scheme.onSurfaceVariant, fontSize: 12);
+    return SignalBuilder(builder: (context) {
+      final volume = s.soundVolume.value;
+      final off = s.soundsOff.value;
+      final overall = s.soundPreset.value;
+      final per = s.soundPresetFor.value;
+      return Column(
+        crossAxisAlignment: CrossAxisAlignment.stretch,
+        children: [
+          Row(
+            children: [
+              Icon(volume == 0 ? Icons.volume_off_outlined : Icons.volume_down_outlined,
+                  color: scheme.onSurfaceVariant),
+              Expanded(
+                child: Slider(
+                  key: const ValueKey('sound-volume'),
+                  value: volume,
+                  onChanged: s.setSoundVolume,
+                  onChangeEnd: (_) => _preview(SfxKind.ready),
+                ),
+              ),
+              SizedBox(width: 44, child: Text('${(volume * 100).round()}%', textAlign: TextAlign.end)),
+            ],
+          ),
+          Text('Soft cues for people and readiness; the video itself covers play, pause and the end. '
+              'Letting go of the slider plays the ready sound.', style: muted),
+          const SizedBox(height: 12),
+          Row(
+            children: [
+              const Expanded(child: Text('Sound set')),
+              AppSelect<String>(
+                key: const ValueKey('sound-preset'),
+                value: overall,
+                onChanged: (v) {
+                  s.setSoundPreset(v);
+                  _preview(SfxKind.ready);
+                },
+                items: [
+                  for (final MapEntry(key: p, value: (name, _)) in presetInfo.entries) (p.name, name),
+                ],
+              ),
+            ],
+          ),
+          Text(presetInfo.entries.where((e) => e.key.name == overall).firstOrNull?.value.$2 ?? '', style: muted),
+          const SizedBox(height: 8),
+          for (final MapEntry(key: kind, value: (name, help)) in soundInfo.entries)
+            Padding(
+              padding: const EdgeInsets.symmetric(vertical: 2),
+              child: Row(
+                children: [
+                  IconButton(
+                    key: ValueKey('sound-play-${kind.name}'),
+                    tooltip: 'Play',
+                    onPressed: volume == 0 ? null : () => _preview(kind),
+                    icon: const Icon(Icons.play_arrow_rounded),
+                  ),
+                  const SizedBox(width: 4),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [Text(name), Text(help, style: muted)],
+                    ),
+                  ),
+                  AppSelect<String?>(
+                    key: ValueKey('sound-preset-${kind.name}'),
+                    value: per[kind.name],
+                    style: muted,
+                    onChanged: (v) {
+                      s.setSoundPresetFor(kind.name, v);
+                      if (volume > 0) _preview(kind);
+                    },
+                    items: [
+                      (null, 'Same as set'),
+                      for (final MapEntry(key: p, value: (name, _)) in presetInfo.entries) (p.name, name),
+                    ],
+                  ),
+                  // A nudge always plays (an explicit poke): no switch,
+                  // its place kept so the rows line up.
+                  Visibility.maintain(
+                    visible: kind != SfxKind.nudge,
+                    child: Switch(
+                      key: ValueKey('sound-on-${kind.name}'),
+                      value: !off.contains(kind.name),
+                      onChanged: volume == 0 || kind == SfxKind.nudge ? null : (on) => s.setSoundOn(kind.name, on),
+                    ),
+                  ),
+                ],
+              ),
+            ),
+        ],
+      );
+    });
+  }
+}

apps/desktop/lib/src/shell/sit_out_card.dart

@@ -0,0 +1,106 @@
+import 'dart:async';
+
+import 'package:flutter/material.dart';
+import 'package:signals/signals_flutter.dart';
+
+import '../playback/media_marks.dart' show formatClock;
+import '../state/session_state.dart';
+import '../sync/state_diff.dart' show serverPositionAt;
+import 'now_playing_title.dart';
+import 'start_banner.dart';
+
+/// In place of the video while self sits out: the media's start card
+/// (cover, title, episode), where the others are ("12:34 / 24:00",
+/// playing or paused) and "Join back" (or Space). [compact]: the mini
+/// player.
+class SitOutCard extends StatefulWidget {
+  final bool compact;
+  const SitOutCard({super.key, this.compact = false});
+
+  @override
+  State<SitOutCard> createState() => _SitOutCardState();
+}
+
+class _SitOutCardState extends State<SitOutCard> {
+  // The position moves on while playing: redraw each second.
+  late final Timer _tick;
+
+  @override
+  void initState() {
+    super.initState();
+    _tick = Timer.periodic(const Duration(seconds: 1), (_) {
+      if (mounted) setState(() {});
+    });
+  }
+
+  @override
+  void dispose() {
+    _tick.cancel();
+    super.dispose();
+  }
+
+  @override
+  Widget build(BuildContext context) {
+    final coord = SessionState.instance.coordinator;
+    final small = widget.compact;
+    return ListenableBuilder(
+      listenable: artChanges(),
+      builder: (context, _) => SignalBuilder(builder: (context) {
+        final r = coord.serverState.value;
+        final now = coord.nowPlaying.value;
+        final playing = r?.transport == 'playing';
+        final duration = (r?.media?['duration'] as num?)?.toDouble() ?? 0;
+        final at = r == null ? 0.0 : serverPositionAt(r, coord.sync.serverNow());
+        Duration secs(double s) => Duration(milliseconds: (s * 1000).round());
+        final where = r?.media == null
+            ? 'Nothing is up'
+            : duration > 0
+                ? '${formatClock(secs(at.clamp(0, duration)))} / ${formatClock(secs(duration))}'
+                : formatClock(secs(at));
+        final text = TextStyle(color: Colors.white, fontSize: small ? 12 : 15);
+        final panel = Column(
+          mainAxisSize: MainAxisSize.min,
+          children: [
+            Text("You're sitting out", style: text.copyWith(fontWeight: FontWeight.w700, fontSize: small ? 13 : 20)),
+            SizedBox(height: small ? 4 : 8),
+            Row(
+              mainAxisSize: MainAxisSize.min,
+              children: [
+                if (r?.media != null) ...[
+                  Icon(playing ? Icons.play_arrow_rounded : Icons.pause_rounded,
+                      color: Colors.white70, size: small ? 14 : 18),
+                  const SizedBox(width: 4),
+                ],
+                Text(where, key: const ValueKey('sit-out-position'), style: text.copyWith(color: Colors.white70)),
+              ],
+            ),
+            SizedBox(height: small ? 8 : 16),
+            FilledButton.icon(
+              key: const ValueKey('join-back'),
+              onPressed: coord.joinBack,
+              icon: Icon(Icons.login_rounded, size: small ? 16 : 20),
+              label: Text(small ? 'Join back' : 'Join back (Space)'),
+              style: small
+                  ? FilledButton.styleFrom(
+                      visualDensity: VisualDensity.compact,
+                      padding: const EdgeInsets.symmetric(horizontal: 12),
+                    )
+                  : null,
+            ),
+          ],
+        );
+        return Stack(
+          fit: StackFit.expand,
+          children: [
+            if (now != null) StartCard(now: now) else const ColoredBox(color: Color(0xFF0C0D11)),
+            // Small: the card's title sits at the bottom, so the panel goes up top.
+            Align(
+              alignment: small ? const Alignment(0, -0.35) : Alignment.center,
+              child: panel,
+            ),
+          ],
+        );
+      }),
+    );
+  }
+}

apps/desktop/lib/src/shell/start_banner.dart

@@ -26,9 +26,11 @@ class StartCard extends StatelessWidget {
     final episode = now.episode;
     return LayoutBuilder(builder: (context, box) {
       final h = box.maxHeight;
+      // Small (the mini player): no cover, a smaller title near the bottom.
+      final small = h < 320;
       final coverWidth = (h * 0.26).clamp(84.0, 240.0) / 1.5;
-      final titleSize = (h * 0.05).clamp(22.0, 44.0);
-      final side = (box.maxWidth * 0.05).clamp(20.0, 72.0);
+      final titleSize = small ? (h * 0.08).clamp(13.0, 18.0) : (h * 0.05).clamp(22.0, 44.0);
+      final side = small ? 12.0 : (box.maxWidth * 0.05).clamp(20.0, 72.0);
       return Stack(
         fit: StackFit.expand,
         children: [
@@ -76,12 +78,15 @@ class StartCard extends StatelessWidget {
           Positioned(
             left: side,
             right: side,
-            bottom: startCardBottom,
+            bottom: small ? 12 : startCardBottom,
             child: Row(
               crossAxisAlignment: CrossAxisAlignment.end,
               children: [
+                // A thumbnail already fills the card as the banner.
+                if (!small && !now.thumbnail) ...[
                   ArtCover(hash: now.posterHash, width: coverWidth),
                   const SizedBox(width: 24),
+                ],
                 Expanded(
                   child: Column(
                     mainAxisSize: MainAxisSize.min,

apps/desktop/lib/src/shell/toasts.dart

@@ -5,6 +5,7 @@ import 'package:signals/signals_flutter.dart';
 
 import '../session/session_coordinator.dart' show ToastItem;
 import '../state/session_state.dart';
+import '../state/settings.dart';
 import 'avatar.dart';
 import 'motion.dart';
 
@@ -34,8 +35,10 @@ ShellToast shellToastFor(ToastItem t, AvatarInfo Function(String name) avatar) {
       ? Icons.login
       : rest.startsWith('left')
           ? Icons.logout
-          : rest.startsWith('kicked')
-              ? Icons.gavel
+          : rest.startsWith('sat you out')
+              ? Icons.bedtime
+              : rest.startsWith('nudged')
+                  ? Icons.notifications_active_outlined
                   : rest.startsWith('changed')
                       ? Icons.swap_horiz
                       : Icons.info_outline;
@@ -43,10 +46,13 @@ ShellToast shellToastFor(ToastItem t, AvatarInfo Function(String name) avatar) {
 }
 
 /// The coordinator's toasts as cards with avatars, bottom-left: each
-/// slides in, stays [life], then slides out and collapses its gap.
+/// slides in, stays [life], then slides out and collapses its gap. A click
+/// on a chat toast opens the chat ([onOpenChat]); the rest let clicks
+/// through. Chat toasts follow [AppSettings.chatPopups].
 class PartyToasts extends StatefulWidget {
   final Duration life;
-  const PartyToasts({super.key, this.life = const Duration(seconds: 5)});
+  final VoidCallback? onOpenChat;
+  const PartyToasts({super.key, this.life = const Duration(seconds: 5), this.onOpenChat});
 
   @override
   State<PartyToasts> createState() => _PartyToastsState();
@@ -71,8 +77,13 @@ class _PartyToastsState extends State<PartyToasts> {
       if (fresh.isEmpty) return;
       // Only new toasts re-run this, not the party they mention.
       untracked(() {
+        final playing = coord.serverState.value?.transport == 'playing';
+        final popups = AppSettings.instance.chatPopups.value;
         for (final t in fresh) {
-          _add(shellToastFor(t, (n) => avatarForName(n, coord)));
+          final toast = shellToastFor(t, (n) => avatarForName(n, coord));
+          // Chat per Settings → Notifications (it is in the chat either way).
+          if (toast.chat && !popups.shows(playing: playing)) continue;
+          _add(toast);
         }
       });
     });
@@ -101,13 +112,37 @@ class _PartyToastsState extends State<PartyToasts> {
     super.dispose();
   }
 
+  void _open(ShellToast t) {
+    widget.onOpenChat?.call();
+    setState(() => t.leaving = true);
+  }
+
   @override
-  Widget build(BuildContext context) => IgnorePointer(child: ToastColumn(toasts: _shown.reversed.take(6).toList().reversed.toList()));
+  Widget build(BuildContext context) => ToastColumn(
+        toasts: _shown.reversed.take(6).toList().reversed.toList(),
+        onTap: widget.onOpenChat == null ? null : _open,
+      );
 }
 
 class ToastColumn extends StatelessWidget {
   final List<ShellToast> toasts;
-  const ToastColumn({super.key, required this.toasts});
+  /// Clicks on chat toasts; null (or any other toast): clicks pass through.
+  final ValueChanged<ShellToast>? onTap;
+  const ToastColumn({super.key, required this.toasts, this.onTap});
+
+  Widget _card(ShellToast t) {
+    final card = ToastCard(toast: t);
+    final tap = onTap;
+    if (!t.chat || tap == null || t.leaving) return IgnorePointer(child: card);
+    return MouseRegion(
+      cursor: SystemMouseCursors.click,
+      child: GestureDetector(
+        key: ValueKey('toast-open-chat-${t.id}'),
+        onTap: () => tap(t),
+        child: card,
+      ),
+    );
+  }
 
   @override
   Widget build(BuildContext context) {
@@ -139,7 +174,7 @@ class ToastColumn extends StatelessWidget {
                   duration: easeTime,
                   curve: ease,
                   opacity: t.leaving ? 0 : 1,
-                  child: Padding(padding: const EdgeInsets.only(top: 8), child: ToastCard(toast: t)),
+                  child: Padding(padding: const EdgeInsets.only(top: 8), child: _card(t)),
                 ),
               ),
             ),

apps/desktop/lib/src/shell/welcome.dart

@@ -0,0 +1,347 @@
+import 'package:flutter/material.dart';
+
+import '../jellyfin/accounts.dart';
+import '../jellyfin/sign_in_panel.dart';
+import '../screens/home/ui.dart' show appName;
+import 'motion.dart';
+
+/// One line under the app name.
+const appTagline = 'Watch together, in sync';
+
+/// Window width from which the welcome band puts the three ways beside
+/// the app name (else under it).
+const welcomeWideFrom = 980.0;
+
+/// Top of the Library while not in a server: the app's name and the three
+/// ways in, Join a friend first (what most people came for), then Host and
+/// Watch solo. None of them needs Jellyfin.
+class WelcomeBand extends StatelessWidget {
+  final VoidCallback onJoin;
+  final VoidCallback onHost;
+  final VoidCallback onSolo;
+  final VoidCallback? onDismiss;
+  const WelcomeBand({super.key, required this.onJoin, required this.onHost, required this.onSolo, this.onDismiss});
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    final t = Theme.of(context).textTheme;
+    final hero = Row(
+      mainAxisSize: MainAxisSize.min,
+      children: [
+        ClipRRect(
+          borderRadius: BorderRadius.circular(14),
+          child: Image.asset('assets/icon/icon_256.png', width: 52, height: 52, filterQuality: FilterQuality.medium),
+        ),
+        const SizedBox(width: 14),
+        Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Text(appName, style: t.titleLarge?.copyWith(fontWeight: FontWeight.w700, height: 1.1)),
+            const SizedBox(height: 2),
+            Text(appTagline, style: TextStyle(color: scheme.onSurfaceVariant)),
+            if (onDismiss != null)
+              TextButton(
+                key: const ValueKey('welcome-dismiss'),
+                onPressed: onDismiss,
+                style: TextButton.styleFrom(
+                  padding: EdgeInsets.zero,
+                  minimumSize: const Size(0, 24),
+                  tapTargetSize: MaterialTapTargetSize.shrinkWrap,
+                  foregroundColor: scheme.onSurfaceVariant,
+                  textStyle: const TextStyle(fontSize: 12),
+                ),
+                child: const Text("Don't show again"),
+              ),
+          ],
+        ),
+      ],
+    );
+    final ways = [
+      WayCard(
+        key: const ValueKey('way-join'),
+        icon: Icons.login_rounded,
+        title: 'Join a friend',
+        caption: 'Got an address from a friend? Join with it. Nothing to set up.',
+        primary: true,
+        onTap: onJoin,
+      ),
+      WayCard(
+        key: const ValueKey('way-host'),
+        icon: Icons.podcasts_rounded,
+        title: 'Host',
+        caption: 'You have the video. Friends join you and watch it with you.',
+        onTap: onHost,
+      ),
+      WayCard(
+        key: const ValueKey('way-solo'),
+        icon: Icons.person_outline_rounded,
+        title: 'Watch solo',
+        caption: 'Just you: play anything below. Invite friends any time.',
+        onTap: onSolo,
+      ),
+    ];
+    Widget row(List<Widget> cards) => IntrinsicHeight(
+          child: Row(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              for (final (i, c) in cards.indexed) ...[if (i > 0) const SizedBox(width: 10), Expanded(child: c)],
+            ],
+          ),
+        );
+    final band = Container(
+      key: const ValueKey('welcome-band'),
+      margin: const EdgeInsets.fromLTRB(20, 16, 20, 0),
+      padding: const EdgeInsets.all(14),
+      decoration: BoxDecoration(
+        borderRadius: BorderRadius.circular(18),
+        gradient: LinearGradient(
+          begin: Alignment.topLeft,
+          end: Alignment.bottomRight,
+          colors: [scheme.primary.withValues(alpha: 0.16), scheme.primary.withValues(alpha: 0.03)],
+        ),
+        border: Border.all(color: scheme.outlineVariant.withValues(alpha: 0.4)),
+      ),
+      child: LayoutBuilder(builder: (context, box) {
+        if (box.maxWidth >= welcomeWideFrom - 40) {
+          return Row(
+            children: [
+              Padding(padding: const EdgeInsets.only(left: 4, right: 20), child: hero),
+              Expanded(child: row(ways)),
+            ],
+          );
+        }
+        return Column(
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            Padding(padding: const EdgeInsets.only(left: 4, bottom: 12), child: hero),
+            if (box.maxWidth >= 520)
+              row(ways)
+            else
+              for (final (i, c) in ways.indexed) ...[if (i > 0) const SizedBox(height: 8), c],
+          ],
+        );
+      }),
+    );
+    return band;
+  }
+}
+
+/// One way in: a tinted icon, a title and a one-line caption.
+class WayCard extends StatefulWidget {
+  final IconData icon;
+  final String title;
+  final String caption;
+  final bool primary;
+  final VoidCallback onTap;
+  const WayCard({
+    super.key,
+    required this.icon,
+    required this.title,
+    required this.caption,
+    required this.onTap,
+    this.primary = false,
+  });
+
+  @override
+  State<WayCard> createState() => _WayCardState();
+}
+
+class _WayCardState extends State<WayCard> {
+  bool _hover = false;
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    final primary = widget.primary;
+    final bg = primary ? scheme.primaryContainer : scheme.surfaceContainerHigh;
+    final fg = primary ? scheme.onPrimaryContainer : scheme.onSurface;
+    return MouseRegion(
+      onEnter: (_) => setState(() => _hover = true),
+      onExit: (_) => setState(() => _hover = false),
+      child: AnimatedScale(
+        duration: easeTime,
+        curve: ease,
+        scale: _hover ? 1.015 : 1,
+        child: Material(
+          color: bg,
+          borderRadius: BorderRadius.circular(14),
+          clipBehavior: Clip.antiAlias,
+          child: InkWell(
+            onTap: widget.onTap,
+            child: Padding(
+              padding: const EdgeInsets.fromLTRB(12, 12, 14, 12),
+              child: Row(
+                crossAxisAlignment: CrossAxisAlignment.start,
+                children: [
+                  Container(
+                    width: 36,
+                    height: 36,
+                    decoration: BoxDecoration(
+                      color: primary ? scheme.primary : scheme.primary.withValues(alpha: 0.14),
+                      borderRadius: BorderRadius.circular(10),
+                    ),
+                    child: Icon(widget.icon, size: 20, color: primary ? scheme.onPrimary : scheme.primary),
+                  ),
+                  const SizedBox(width: 12),
+                  Expanded(
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.start,
+                      children: [
+                        Text(widget.title, style: TextStyle(fontWeight: FontWeight.w700, color: fg)),
+                        const SizedBox(height: 2),
+                        Text(widget.caption,
+                            maxLines: 2,
+                            overflow: TextOverflow.ellipsis,
+                            style: TextStyle(fontSize: 12, height: 1.3, color: fg.withValues(alpha: 0.72))),
+                      ],
+                    ),
+                  ),
+                ],
+              ),
+            ),
+          ),
+        ),
+      ),
+    );
+  }
+}
+
+/// The Library's Jellyfin source with no server linked: what plays with
+/// nothing set up (Files, Link), then Jellyfin as an optional extra that
+/// guests never need. The sign-in opens in place.
+class NoJellyfinPanel extends StatefulWidget {
+  final JellyfinAccounts accounts;
+  final VoidCallback onFiles;
+  final VoidCallback onLink;
+  const NoJellyfinPanel({super.key, required this.accounts, required this.onFiles, required this.onLink});
+
+  @override
+  State<NoJellyfinPanel> createState() => _NoJellyfinPanelState();
+}
+
+class _NoJellyfinPanelState extends State<NoJellyfinPanel> {
+  bool _signIn = false;
+
+  @override
+  Widget build(BuildContext context) {
+    final scheme = Theme.of(context).colorScheme;
+    final t = Theme.of(context).textTheme;
+    final muted = TextStyle(color: scheme.onSurfaceVariant);
+    final sources = [
+      WayCard(
+        key: const ValueKey('source-files'),
+        icon: Icons.folder_outlined,
+        title: 'Files',
+        caption: 'Videos on this computer. Drop a file or folder anywhere.',
+        onTap: widget.onFiles,
+      ),
+      WayCard(
+        key: const ValueKey('source-link'),
+        icon: Icons.link,
+        title: 'Link',
+        caption: 'YouTube, X, or any video address. Ctrl+V anywhere.',
+        onTap: widget.onLink,
+      ),
+    ];
+    return SingleChildScrollView(
+      key: const ValueKey('media-jellyfin'),
+      padding: const EdgeInsets.only(bottom: 24),
+      child: Align(
+        alignment: Alignment.topLeft,
+        child: ConstrainedBox(
+          constraints: const BoxConstraints(maxWidth: 640),
+          child: Column(
+            crossAxisAlignment: CrossAxisAlignment.stretch,
+            children: [
+              Text('Pick something to watch', style: t.titleMedium),
+              const SizedBox(height: 4),
+              Text('No account needed: these work for everyone.', style: muted),
+              const SizedBox(height: 12),
+              LayoutBuilder(
+                builder: (context, box) => box.maxWidth < 460
+                    ? Column(children: [sources[0], const SizedBox(height: 8), sources[1]])
+                    : IntrinsicHeight(
+                        child: Row(
+                          crossAxisAlignment: CrossAxisAlignment.stretch,
+                          children: [
+                            Expanded(child: sources[0]),
+                            const SizedBox(width: 10),
+                            Expanded(child: sources[1]),
+                          ],
+                        ),
+                      ),
+              ),
+              const SizedBox(height: 20),
+              Material(
+                key: const ValueKey('jellyfin-optional'),
+                color: scheme.surfaceContainer,
+                shape: RoundedRectangleBorder(
+                  borderRadius: BorderRadius.circular(14),
+                  side: BorderSide(color: scheme.outlineVariant.withValues(alpha: 0.5)),
+                ),
+                clipBehavior: Clip.antiAlias,
+                child: AnimatedSize(
+                  duration: easeTime,
+                  curve: ease,
+                  alignment: Alignment.topCenter,
+                  child: Padding(
+                    padding: const EdgeInsets.all(16),
+                    child: Column(
+                      crossAxisAlignment: CrossAxisAlignment.stretch,
+                      children: [
+                        Row(
+                          children: [
+                            Icon(Icons.video_library_outlined, color: scheme.onSurfaceVariant),
+                            const SizedBox(width: 12),
+                            Expanded(
+                              child: Column(
+                                crossAxisAlignment: CrossAxisAlignment.start,
+                                children: [
+                                  Wrap(spacing: 8, crossAxisAlignment: WrapCrossAlignment.center, children: [
+                                    const Text('Jellyfin', style: TextStyle(fontWeight: FontWeight.w600)),
+                                    Container(
+                                      padding: const EdgeInsets.symmetric(horizontal: 7, vertical: 1),
+                                      decoration: BoxDecoration(
+                                        color: scheme.surfaceContainerHighest,
+                                        borderRadius: BorderRadius.circular(6),
+                                      ),
+                                      child: Text('optional', style: TextStyle(fontSize: 11, color: scheme.onSurfaceVariant)),
+                                    ),
+                                  ]),
+                                  Text(
+                                    'Only if you have a Jellyfin server: browse it here, '
+                                    'with progress and next episodes. Joining a friend never needs it.',
+                                    style: muted.copyWith(fontSize: 12),
+                                  ),
+                                ],
+                              ),
+                            ),
+                          ],
+                        ),
+                        if (!_signIn)
+                          Align(
+                            alignment: Alignment.centerRight,
+                            child: TextButton(
+                              key: const ValueKey('jellyfin-link'),
+                              onPressed: () => setState(() => _signIn = true),
+                              child: const Text('Link a server'),
+                            ),
+                          ),
+                        if (_signIn) ...[
+                          const SizedBox(height: 14),
+                          JellyfinSignInPanel(accounts: widget.accounts, onCancel: () => setState(() => _signIn = false)),
+                        ],
+                      ],
+                    ),
+                  ),
+                ),
+              ),
+            ],
+          ),
+        ),
+      ),
+    );
+  }
+}

apps/desktop/lib/src/state/server_isolate.dart

@@ -33,8 +33,12 @@ class ServerIsolate {
 
   /// Spawns the server and waits until it listens. Throws a
   /// [StateError] with the server's message if it cannot start.
+  /// [loopbackOnly]: 127.0.0.1 only (the solo session). [logDir]: where
+  /// the server writes its session log (none when null).
   static Future<ServerIsolate> start(
     AppConfig config, {
+    bool loopbackOnly = false,
+    String? logDir,
     required void Function(String line) onLog,
     required void Function(String error) onCrash,
     Duration timeout = const Duration(seconds: 15),
@@ -55,9 +59,9 @@ class ServerIsolate {
       if (msg is! Map) return;
       switch (msg['t']) {
         case 'log':
-          final err = msg['error'];
+          final err = msg['error'], stack = msg['stack'];
           onLog('${msg['level']} ${msg['logger']}: ${msg['message']}'
-              '${err == null ? '' : ' ($err)'}');
+              '${err == null ? '' : ' ($err)'}${stack == null ? '' : '\n$stack'}');
         case 'ready':
           if (!startup.isCompleted) {
             startup.complete((msg['port'] as int, msg['stop'] as SendPort));
@@ -83,7 +87,7 @@ class ServerIsolate {
     final Isolate isolate;
     try {
       isolate = await Isolate.spawn(
-          _serverMain, (config.toMap(), events.sendPort),
+          _serverMain, ({...config.toMap(), if (loopbackOnly) 'loopbackOnly': true, 'logDir': ?logDir}, events.sendPort),
           errorsAreFatal: false,
           onError: errors.sendPort,
           onExit: exit.sendPort,

apps/desktop/lib/src/state/session_state.dart

@@ -8,12 +8,19 @@ import 'package:sync_relay_core/core.dart';
 
 import '../jellyfin/accounts.dart';
 import '../jellyfin/session_media.dart';
+import '../screens/home/health_probe.dart';
+import '../screens/home/picked_media.dart';
+import '../platform/app_log.dart' show appLogDir;
+import '../playback/yt_dlp_app.dart';
 import '../sfx/sfx.dart';
+import '../sfx/sound_bank.dart';
+import '../sfx/synth_sfx.dart';
 import '../session/health.dart';
 import '../session/session_coordinator.dart';
 import '../widgets/avatar_pipeline.dart';
 import 'connect_prefs.dart';
 import 'server_isolate.dart';
+import 'settings.dart';
 
 enum AppRoute {
   home,
@@ -140,7 +147,7 @@ class ServerCrashed implements Exception {
 }
 
 /// A fresh per-hosting key: the app's own client sends it in hello to be
-/// recognised as the (unkickable) host.
+/// recognised as the host (`members[].host`).
 String newHostKey() {
   final r = Random.secure();
   return base64Url.encode([for (var i = 0; i < 24; i++) r.nextInt(256)]);
@@ -153,19 +160,43 @@ class SessionState {
   final route = signal(AppRoute.home);
   final recents = signal<List<RecentServer>>(const []);
   final status = signal(const HealthStatus(HealthSeverity.info, 'idle'));
-  final SfxService sfx = const NoopSfxService();
+  final SfxService sfx = SynthSfx(
+    volume: () => AppSettings.instance.soundVolume.peek(),
+    // A nudge is an explicit poke: it ignores its switch (not the volume).
+    enabled: (k) => k == SfxKind.nudge || !AppSettings.instance.soundsOff.peek().contains(k.name),
+    presetFor: soundPresetFor,
+  );
   late final SessionCoordinator coordinator = SessionCoordinator(sfx: sfx);
   final lastForm = ConnectForm();
   JellyfinAccounts get jellyfin => JellyfinAccounts.instance;
   /// Set when the hosted server died mid-session; Home shows it on the
   /// Host card and clears it.
   final serverCrash = signal<String?>(null);
+  /// In a solo session: this app's own server on 127.0.0.1, only you in
+  /// it. Hosting from it ([host]) keeps what plays and where.
+  final solo = signal(false);
+  /// The joined server's own name (`/health`), '' until known or when it
+  /// only has the default name.
+  final serverLabel = signal('');
+  /// A solo session is becoming a hosted one: the player has nothing open
+  /// until the media is up again on the new server.
+  final switching = signal(false);
+  ConnectParams? _soloParams;
+
+  /// The app's yt-dlp folder for the hosted server; '' (the server's own
+  /// default) when the app-support folder is not available.
+  static Future<String> _sharedYtDlpDir() async {
+    try {
+      return (await AppYtDlp.instance.ytDlp).dir;
+    } catch (_) {
+      return '';
+    }
+  }
   ServerIsolate? _server;
   String? _setupCrash;
 
   @visibleForTesting
   ServerIsolate? get hostedServer => _server;
-  void Function()? _stopKickWatch;
   // Bumped by host/join/cancelPending: a cancelled setup notices at its
   // next step and unwinds instead of connecting.
   int _op = 0;
@@ -225,9 +256,102 @@ class SessionState {
     await _saveFormQuietly();
   }
 
+  /// Hosts a server friends can join. From a solo session it keeps the
+  /// media and position: the solo server goes, the new one gets the same
+  /// pick, seeked to where it was; if hosting fails, solo comes back.
   Future<void> host(ConnectParams params, ConnectForm form) async {
+    if (!solo.peek()) return _host(params, form: form);
+    final carry = _invited = _carry();
+    switching.value = true;
+    try {
+      await coordinator.leave();
+      await stopServer();
+      solo.value = false;
+      coordinator.solo = false;
+      try {
+        await _host(params, form: form);
+      } catch (_) {
+        // Not hosted (failed or cancelled): back to solo, same media.
+        try {
+          await _host(_soloParams ?? params, soloSession: true);
+          if (carry != null) await _resume(carry);
+        } catch (e) {
+          debugPrint('back to solo failed: $e');
+          await leave();
+        }
+        rethrow;
+      }
+      try {
+        if (carry != null) await _resume(carry);
+      } catch (e) {
+        coordinator.showToast("couldn't put it up again: $e");
+      }
+    } finally {
+      switching.value = false;
+    }
+  }
+
+  /// What an Invite from solo carried over, for [cancelInvite].
+  ({PickedMedia pick, double position})? _invited;
+
+  /// Invite cancelled after the hosted server already came up: back to
+  /// solo with the same media, not out of the session.
+  Future<void> cancelInvite() async {
+    final carry = _invited;
+    switching.value = true;
+    try {
+      await coordinator.leave();
+      await stopServer();
+      await _host(_soloParams!, soloSession: true);
+      if (carry != null) await _resume(carry);
+    } catch (e) {
+      debugPrint('back to solo failed: $e');
+      await leave();
+    } finally {
+      switching.value = false;
+    }
+  }
+
+  /// Watch alone: the same hosted path, on 127.0.0.1 and a free port, no
+  /// password, nothing put up yet. Nobody else can reach it.
+  Future<void> startSolo(ConnectParams params) async {
+    if (route.peek() == AppRoute.session) return;
+    _soloParams = params;
+    await _host(params, soloSession: true);
+  }
+
+  ({PickedMedia pick, double position})? _carry() {
+    final pick = coordinator.lastPick;
+    if (pick == null || coordinator.serverState.peek()?.media == null) return null;
+    final pos = coordinator.playback.positionSecs;
+    return (pick: pick, position: pos.isFinite && pos > 0 ? pos : 0.0);
+  }
+
+  /// Puts [carry] up on the server just joined and seeks to its position
+  /// once the swap shows in a state.
+  Future<void> _resume(({PickedMedia pick, double position}) carry) async {
+    final before = coordinator.serverState.peek()?.mediaId ?? 0;
+    final error = await coordinator.swapPicked(carry.pick);
+    if (error != null) throw StateError(error);
+    if (carry.position < 1) return;
+    final landed = Completer<void>();
+    final stop = effect(() {
+      final r = coordinator.serverState.value;
+      if (r != null && r.media != null && r.mediaId > before && !landed.isCompleted) landed.complete();
+    });
+    try {
+      await landed.future.timeout(const Duration(seconds: 20));
+      coordinator.sync.sendSeek(carry.position);
+    } on TimeoutException {
+      debugPrint('resume: the media did not come up; not seeking');
+    } finally {
+      stop();
+    }
+  }
+
+  Future<void> _host(ConnectParams params, {ConnectForm? form, bool soloSession = false}) async {
     final op = ++_op;
-    _rememberForm(form);
+    if (form != null) _rememberForm(form);
     try {
       status.value =
           const HealthStatus(HealthSeverity.info, 'starting server…');
@@ -247,14 +371,20 @@ class SessionState {
       try {
         server = await ServerIsolate.start(
           AppConfig(
-            port: params.port,
-            secret: params.secret,
+            port: soloSession ? 0 : params.port,
+            secret: soloSession ? '' : params.secret,
             name: 'server',
             mediaPath: params.mediaPath,
             hostKey: hostKey,
             jellyfin: relay,
+            ytDlpDir: await _sharedYtDlpDir(),
           ),
-          onLog: (line) => debugPrint('[server] $line'),
+          loopbackOnly: soloSession,
+          // Its session log (every member's shared diagnostics and its own
+          // records) goes next to the app's; not for a solo session.
+          logDir: soloSession ? null : appLogDir,
+          // Its records join the app's log as `server.<logger>`.
+          onLog: (line) => relogLine('server', line),
           onCrash: (cause) => _onServerCrash(server, cause),
         );
       } catch (e, st) {
@@ -270,13 +400,13 @@ class SessionState {
       _server = server;
       coordinator.hostFile = (path) async =>
           identical(_server, server) ? server.setFile(path) : null;
-      status.value =
-          HealthStatus(HealthSeverity.ok, 'hosting on port ${server.port}');
+      status.value = HealthStatus(
+          HealthSeverity.ok, soloSession ? 'watching solo' : 'hosting on port ${server.port}');
       try {
         await coordinator.connect(ConnectParams(
           host: '127.0.0.1',
           port: server.port,
-          secret: params.secret,
+          secret: soloSession ? '' : params.secret,
           name: params.name,
           avatar: params.avatar,
           hostKey: hostKey,
@@ -290,10 +420,11 @@ class SessionState {
         if (crash != null && e is! ConnectCancelled) throw ServerCrashed(crash);
         rethrow;
       }
-      _watchKick();
+      solo.value = soloSession;
+      coordinator.solo = soloSession;
       route.value = AppRoute.session;
     } finally {
-      await _saveFormQuietly();
+      if (form != null) await _saveFormQuietly();
     }
   }
 
@@ -319,6 +450,11 @@ class SessionState {
       await coordinator.connect(params);
       if (op != _op) throw const ConnectCancelled();
       route.value = AppRoute.session;
+      serverLabel.value = '';
+      unawaited(probeHealth(params.host, '${params.port}', defaultHealthGet).then((h) {
+        // 'server' is the dedicated server's default --name: not a name.
+        if (op == _op && h.online && h.name.isNotEmpty && h.name != 'server') serverLabel.value = h.name;
+      }).catchError((Object _) {}));
     } finally {
       await _saveFormQuietly();
     }
@@ -331,16 +467,9 @@ class SessionState {
     try {
       await coordinator.cancelConnect();
     } catch (_) {}
-    await stopServer();
-  }
-
-  /// A kicked host must not keep serving.
-  void _watchKick() {
-    _stopKickWatch?.call();
-    _stopKickWatch = effect(() {
-      // Microtask: stopServer disposes this effect, not from inside it.
-      if (coordinator.kickReason.value != null) scheduleMicrotask(stopServer);
-    });
+    // Solo becoming hosted: [host] stops what it started and goes back
+    // to solo itself.
+    if (!switching.peek()) await stopServer();
   }
 
   /// Saved whatever the outcome: a failed join is exactly when the user
@@ -368,8 +497,6 @@ class SessionState {
 
   Future<void> stopServer() async {
     coordinator.hostFile = null;
-    _stopKickWatch?.call();
-    _stopKickWatch = null;
     final server = _server;
     _server = null;
     await server?.stop();
@@ -378,7 +505,18 @@ class SessionState {
   Future<void> leave() async {
     await coordinator.leave();
     await stopServer();
+    solo.value = false;
+    coordinator.solo = false;
+    serverLabel.value = '';
     status.value = const HealthStatus(HealthSeverity.info, 'idle');
     route.value = AppRoute.home;
   }
 }
+
+/// The sound set [kind] plays from: its own pick in Settings, else the
+/// overall one.
+SoundPreset soundPresetFor(SfxKind kind) {
+  final s = AppSettings.instance;
+  final name = s.soundPresetFor.peek()[kind.name] ?? s.soundPreset.peek();
+  return SoundPreset.values.where((p) => p.name == name).firstOrNull ?? defaultPreset;
+}

apps/desktop/lib/src/state/settings.dart

@@ -20,9 +20,35 @@ const _keyAutoAdvance = 'autoAdvance';
 const _keyMpvControls = 'mpvControls';
 const _keyHideReReleases = 'hideReReleases';
 const _keyProgressLine = 'progressLine';
+const _keySoundVolume = 'soundVolume';
+const _keySoundsOff = 'soundsOff';
+const _keySoundPreset = 'soundPreset';
+const _keyWelcomeDismissed = 'welcomeDismissed';
+const _keySoundPresetFor = 'soundPresetFor';
+const _keyUnreadyOnSwap = 'unreadyOnSwap';
+const _keyIdleSitsOut = 'idleSitsOut';
+const _keyChatPopups = 'chatPopups';
+const _keyShareDiagnostics = 'shareDiagnostics';
 
 enum HwdecMode { auto, off, custom }
 
+/// When chat messages pop up as toasts (they always reach the chat).
+enum ChatPopups {
+  all('All'),
+  paused('Only when paused'),
+  off('Off');
+
+  final String label;
+  const ChatPopups(this.label);
+
+  /// Whether a chat message pops up now ([playing]: the video plays).
+  bool shows({required bool playing}) => switch (this) {
+        ChatPopups.all => true,
+        ChatPopups.paused => !playing,
+        ChatPopups.off => false,
+      };
+}
+
 class AppSettings {
   static final AppSettings instance = AppSettings();
 
@@ -31,6 +57,11 @@ class AppSettings {
   final autoCheckUpdates = signal(true);
   /// Jellyfin episodes: at the end, count down 10 s and put up the next.
   final autoAdvance = signal(true);
+  /// Session: send ready=false when the video changes (a swap keeps the
+  /// server's ready flags).
+  final unreadyOnSwap = signal(false);
+  /// Session: the idle auto-unready sits this member out instead.
+  final idleSitsOut = signal(false);
   /// Player design: the uosc controls (`controls/uosc/`) instead of the
   /// standard ones (media_kit's with our bars). Applies live.
   final mpvControls = signal(false);
@@ -40,6 +71,22 @@ class AppSettings {
   /// A 2 px progress line at the bottom of the video while the controls
   /// are hidden (both designs). Applies live.
   final progressLine = signal(true);
+  /// Send this app's log lines to the server's session log while in a
+  /// session (never chat). Off: nothing is sent but a note that it is off.
+  final shareDiagnostics = signal(true);
+  /// Chat message toasts (default: only when paused). Applies live.
+  final chatPopups = signal(ChatPopups.paused);
+  /// App sounds (`sfx/`): 0..1, 0 = silent.
+  final soundVolume = signal(1.0);
+  /// `SfxKind` names switched off one by one.
+  final soundsOff = signal<Set<String>>(const {});
+  /// The sound set (`SoundPreset` name) every sound uses unless
+  /// [soundPresetFor] picks another one for it.
+  final soundPreset = signal('cosmic');
+  /// The offline welcome band's × was pressed: never show it again.
+  final welcomeDismissed = signal(false);
+  /// `SfxKind` name -> `SoundPreset` name, per-sound overrides.
+  final soundPresetFor = signal<Map<String, String>>(const {});
 
   /// Video shaders: one choice, used on join and changed both here and
   /// in the session (Ctrl+0..6, the shader button).
@@ -76,12 +123,35 @@ class AppSettings {
       if (auto is bool) autoCheckUpdates.value = auto;
       final advance = box.get(_keyAutoAdvance);
       if (advance is bool) autoAdvance.value = advance;
+      final unready = box.get(_keyUnreadyOnSwap);
+      if (unready is bool) unreadyOnSwap.value = unready;
+      final idleOut = box.get(_keyIdleSitsOut);
+      if (idleOut is bool) idleSitsOut.value = idleOut;
       final mpv = box.get(_keyMpvControls);
       if (mpv is bool) mpvControls.value = mpv;
       final hideRe = box.get(_keyHideReReleases);
       if (hideRe is bool) hideReReleases.value = hideRe;
       final line = box.get(_keyProgressLine);
       if (line is bool) progressLine.value = line;
+      final share = box.get(_keyShareDiagnostics);
+      if (share is bool) shareDiagnostics.value = share;
+      final popups = box.get(_keyChatPopups);
+      chatPopups.value = ChatPopups.values.where((m) => m.name == popups).firstOrNull ?? ChatPopups.paused;
+      final vol = box.get(_keySoundVolume);
+      if (vol is num) soundVolume.value = vol.toDouble().clamp(0, 1);
+      final off = box.get(_keySoundsOff);
+      if (off is List) soundsOff.value = Set.unmodifiable(off.whereType<String>());
+      final welcomeOff = box.get(_keyWelcomeDismissed);
+      if (welcomeOff is bool) welcomeDismissed.value = welcomeOff;
+      final soundSet = box.get(_keySoundPreset);
+      if (soundSet is String) soundPreset.value = soundSet;
+      final per = box.get(_keySoundPresetFor);
+      if (per is Map) {
+        soundPresetFor.value = Map.unmodifiable({
+          for (final e in per.entries)
+            if (e.key is String && e.value is String) e.key as String: e.value as String,
+        });
+      }
       final preset = box.get(_keyShaderPreset);
       shaderPreset.value =
           ShaderPreset.values.where((p) => p.name == preset).firstOrNull ??
@@ -119,6 +189,16 @@ class AppSettings {
     _put(_keyAutoAdvance, on);
   }
 
+  void setUnreadyOnSwap(bool on) {
+    unreadyOnSwap.value = on;
+    _put(_keyUnreadyOnSwap, on);
+  }
+
+  void setIdleSitsOut(bool on) {
+    idleSitsOut.value = on;
+    _put(_keyIdleSitsOut, on);
+  }
+
   void setMpvControls(bool on) {
     mpvControls.value = on;
     _put(_keyMpvControls, on);
@@ -129,6 +209,44 @@ class AppSettings {
     _put(_keyProgressLine, on);
   }
 
+  void setShareDiagnostics(bool on) {
+    shareDiagnostics.value = on;
+    _put(_keyShareDiagnostics, on);
+  }
+
+  void setChatPopups(ChatPopups mode) {
+    chatPopups.value = mode;
+    _put(_keyChatPopups, mode.name);
+  }
+
+  void setSoundVolume(double v) {
+    soundVolume.value = v.clamp(0, 1);
+    _put(_keySoundVolume, soundVolume.value);
+  }
+
+  void setSoundOn(String kind, bool on) {
+    soundsOff.value = Set.unmodifiable(on ? ({...soundsOff.value}..remove(kind)) : {...soundsOff.value, kind});
+    _put(_keySoundsOff, soundsOff.value.toList());
+  }
+
+  void dismissWelcome() {
+    welcomeDismissed.value = true;
+    _put(_keyWelcomeDismissed, true);
+  }
+
+  void setSoundPreset(String preset) {
+    soundPreset.value = preset;
+    _put(_keySoundPreset, preset);
+  }
+
+  /// [preset] null: the sound follows [soundPreset] again.
+  void setSoundPresetFor(String kind, String? preset) {
+    final m = {...soundPresetFor.value};
+    preset == null ? m.remove(kind) : m[kind] = preset;
+    soundPresetFor.value = Map.unmodifiable(m);
+    _put(_keySoundPresetFor, m);
+  }
+
   void setHideReReleases(bool on) {
     hideReReleases.value = on;
     _put(_keyHideReReleases, on);

apps/desktop/lib/src/sync/state_diff.dart

@@ -43,6 +43,10 @@ bool localPlayAllowed(StateBroadcast state, String memberId) {
   return false;
 }
 
+/// At `finished`, a player at most this far behind the end keeps playing
+/// to it.
+const finishSlackSecs = 3.0;
+
 class StateDiff {
   static const debounceWindow = Duration(seconds: 2);
 
@@ -73,7 +77,9 @@ class StateDiff {
     }
 
     // End of media: everyone stops where they are (at or just before the
-    // end). No seek to the very end and no drift correction.
+    // end). No seek to the very end and no drift correction. A player a
+    // little behind the server's clock plays its last moments out (mpv
+    // stops at the end by itself) instead of being cut short.
     if (state.transport == 'finished') {
       final first = _lastEventId == -1;
       final changed = first ||
@@ -87,7 +93,9 @@ class StateDiff {
       if (!changed) return out;
       out.add(const RateAction(1.0));
       if (first) out.add(SeekAction(serverPos > 1 ? serverPos - 1 : 0));
+      if (first || state.position - ownPosition > finishSlackSecs) {
         out.add(const TransportAction(false));
+      }
       return out;
     }
 

apps/desktop/lib/src/sync/sync_client.dart

@@ -4,7 +4,7 @@ import 'dart:convert';
 import 'package:sync_relay_core/core.dart';
 import 'package:web_socket_channel/web_socket_channel.dart';
 
-enum SyncStatus { idle, connecting, open, kicked, closed, error }
+enum SyncStatus { idle, connecting, open, closed, error }
 
 class SyncClient {
   /// Local clock; injectable so tests can run a client whose clock is off.
@@ -23,13 +23,14 @@ class SyncClient {
   StreamSubscription? _sub;
   final StreamController<StateBroadcast> _states = StreamController.broadcast();
   final StreamController<FeedMessage> _feeds = StreamController.broadcast();
-  final StreamController<String> _kicked = StreamController.broadcast();
+  final StreamController<NudgeNotice> _nudges = StreamController.broadcast();
   final StreamController<String> _errors = StreamController.broadcast();
   final StreamController<SyncStatus> _status = StreamController.broadcast();
 
   Stream<StateBroadcast> get states => _states.stream;
   Stream<FeedMessage> get feeds => _feeds.stream;
-  Stream<String> get kicked => _kicked.stream;
+  /// Someone poked this member (`nudge`).
+  Stream<NudgeNotice> get nudges => _nudges.stream;
   Stream<String> get errors => _errors.stream;
   Stream<SyncStatus> get status => _status.stream;
 
@@ -153,14 +154,10 @@ class SyncClient {
           // one toast, one sfx.
           if (f.action != 'chat') _feeds.add(f);
         } catch (_) {}
-      case 'kicked':
+      case 'nudge':
         try {
-          final msg = KickedMessage.fromJson(decoded);
-          _kicked.add(msg.reason);
-          _status.add(SyncStatus.kicked);
-        } catch (_) {
-          _kicked.add('');
-        }
+          _nudges.add(NudgeNotice.fromJson(decoded));
+        } catch (_) {}
       case 'pong':
         try {
           final pong = PongMessage.fromJson(decoded);
@@ -211,8 +208,13 @@ class SyncClient {
     _send(PingMessage(clientMs: _clock().millisecondsSinceEpoch).toJson());
   }
 
-  void sendSwap(HelloMedia media) {
-    _send(SwapIntent(media: media).toJson());
+  void sendSwap(HelloMedia media, {String? queueId}) {
+    _send(SwapIntent(media: media, queueId: queueId).toJson());
+  }
+
+  /// One change to Up next (see [QueueIntent]).
+  void sendQueue(QueueIntent intent) {
+    _send(intent.toJson());
   }
 
   void sendReport({
@@ -222,6 +224,7 @@ class SyncClient {
     double duration = 0,
     int mediaId = 0,
     Map<String, bool>? jf,
+    String error = '',
   }) {
     final safeBuffered = buffered.isNaN || buffered < 0 ? 0.0 : buffered;
     _send(
@@ -232,6 +235,7 @@ class SyncClient {
         duration: duration.isFinite && duration > 0 ? duration : 0,
         mediaId: mediaId,
         jf: jf,
+        error: error,
       ).toJson(),
     );
   }
@@ -255,8 +259,14 @@ class SyncClient {
     _send(ArtMessage(mediaId: mediaId, poster: poster, banner: banner).toJson());
   }
 
-  void sendKick(String target, {String reason = ''}) {
-    _send(KickRequest(target: target, reason: reason).toJson());
+  /// Sits the member [target] out, or with [out] false brings this
+  /// member back (only oneself can come back).
+  void sendOut(String target, bool out) {
+    _send(OutIntent(target: target, out: out).toJson());
+  }
+
+  void sendNudge(String target) {
+    _send(NudgeIntent(target: target).toJson());
   }
 
   Future<void> disconnect() async {
@@ -283,7 +293,7 @@ class SyncClient {
     await disconnect();
     await _states.close();
     await _feeds.close();
-    await _kicked.close();
+    await _nudges.close();
     await _errors.close();
     await _status.close();
   }

apps/desktop/lib/src/update/bundle/update.bat

@@ -1,4 +1,4 @@
 @echo off
 rem Update this install in place (same as clicking Update in the app).
-"%~dp0watch_together.exe" --upgrade %*
+"%~dp0watch-together-server.exe" --upgrade %*
 pause

apps/desktop/lib/src/update/bundle/update.sh

@@ -1,3 +1,4 @@
 #!/bin/sh
 # Update this install in place (same as clicking Update in the app).
-cd "$(dirname "$0")" && exec ./watch_together --upgrade "$@"
+# The server binary runs the updater: it needs no GTK/display (VPS).
+cd "$(dirname "$0")" && exec ./watch-together-server --upgrade "$@"