Updater v1 --upgrade + roadmap as flat backlog

Updater: watch-together --upgrade checks updates/manifest.json,
downloads the tarball, verifies sha256, applies over the live
install (extract-temp + delete-first move-over; rename-safe on
Linux while running). Zero Flutter imports, 7 tests incl.
stub-server flows. Version stamped via --dart-define=APP_VERSION
in package script. Warns (never silently jumps) on proto mismatch.
Roadmap: phases retired as tracker (history in git log), now flat
Built/Backlog/Epics/Deferred; Jellyfin next feature, transcode
never; updater expansion stays an epic. Endpoint publishing
(manifest + release tarball) is user-owned.

HANDOFF.md

@@ -1,7 +1,10 @@
 # HANDOFF — sync_relay_project (watch-together app)
 
 Date: 2026-09-12 (updated late session). Phases 0–4 + presence hardening
-+ UI redesigns done, all green (core 42, server 40, desktop 17).
++ UI redesigns done, all green (core 42, server 41, desktop 24).
+Phases retired as a tracker 09-12 — `docs/ROADMAP.md` is now a flat
+backlog (Built / Backlog / Epics / Deferred); phase text lives in
+git history.
 Black screen (§8) DIAGNOSED + FIXED (avatar-texture teardown race;
 Visibility keep-mounted) + VERIFIED, incl. over internet. Bisect
 screens (legacy/minimal/nosheet) REMOVED 09-12 — app.dart routes
@@ -53,8 +56,9 @@ kick kills sync+video, no relay memory growth.
   box — accepted). No op roles (deferred: op flag + second hello
   secret). Kick = transient nudge: revoke + close + `kicked` reason,
   instant rejoin with fresh token.
-- Deferred, do not build: TLS/Caddy, Jellyfin native, auto-updater,
+- Deferred, do not build: TLS/Caddy, Jellyfin native, updater
-  playlist (extension shape reserved in PROTOCOL.md), op roles, sounds
+  expansion (v1 `--upgrade` SHIPPED 09-12 — see §9.12; in-app
+  prompt + Windows helper still deferred), playlist (extension shape reserved in PROTOCOL.md), op roles, sounds
   (researched, wired, no assets — see §7).
 - Standing rules: health reporting (every failure displays, nothing
   stalls silently); proto bump + PROTOCOL.md same-commit on ANY
@@ -89,12 +93,14 @@ kick kills sync+video, no relay memory growth.
   THE avatar — memoized, no bg on images, dark ring+fallback;
   dialogs.dart: kick confirm; media_input.dart: parseMediaInput).
 - `apps/desktop/test/`: room_diff_test (9), media_input_test (6),
+  updater_test (7: version/manifest/layout + stub-server flows),
   sync_playback_e2e_test (quorum: solo Space holds, both ready plays;
   needs mpv + ~/Videos/chiyo.mp4), coord_presence_test (dead server
   clears + reconnects; needs mpv).
 - `tool/`: range_logger, shaper (chaos: KB/s cap, latency,
   --kill-after), fake_viewer, e2e_check (sim timeline, still ALL PASS
-  post-quorum).
+  post-quorum), package_linux.sh (release tarball + Discord card,
+  stamps APP_VERSION).
 - `docs/`: PROTOCOL.md (v4 + quorum + 15/30 s timeouts + isClosed note,
   normative), ARCHITECTURE.md (+health rule), mpv-http-contract.md.
 - `deploy/`: systemd unit. Git repo initialized 09-12 (`git init`,
@@ -247,15 +253,10 @@ remain in session_screen.dart.
 3. 2-client LAN soak — user reports DONE 09-12 (details pending).
 4. 1.4 GB real-file media test — user reports DONE 09-12
    (details pending; api_key must never land in files).
-5. Cache-exhaustion long outage via shaper --kill-after (Phase 5
+5.–8. MIGRATED 09-12 to `docs/ROADMAP.md` backlog (cache-exhaustion,
-   chaos assertion, never run).
+   sounds, file-join wart, /health) — the roadmap is now the single
-6. Sounds swap-in (§7) after audition.
+   backlog; this section keeps session history + user-owned pendings
-7. File-join wart: welcome mediaUrl uses advertiseHost 127.0.0.1,
+   only.
-   remote file joiners fail-open then self-heal on first room
-   broadcast — fix via Host header, or leave (cosmetic).
-8. `/health` is unauthenticated and broadcasts the full media URL
-   (incl. api_key when the link carries one) — acceptable on LAN,
-   noted now that 6969 faces the internet.
 9. FIXED 09-12: auto-unready fired while passively watching —
    the 10-min check keyed off `_lastInput`, refreshed only by
    explicit actions. Steady playback now counts as activity:
@@ -273,12 +274,24 @@ remain in session_screen.dart.
     case) — one send, one row, one toast, one sfx. No wire
     change, still v4. Chat field also keeps focus after send
     (dedicated FocusNode, re-requested on submit/button).
-11. KNOWN (non-breaking, fix later): seeks feel jumpy
+11. KNOWN (non-breaking, fix later — roadmap backlog #2): seeks feel
-    (forward-back-forward) — suspect the seek-land retry
+    jumpy (forward-back-forward) — suspect the seek-land retry
     (`_checkSeekLanded`, `session_coordinator.dart:429`)
     re-applying SeekAction against the 0.5 s deadband / 2 s
     debounce and the 1 Hz room echo. Needs a live repro with a
     timeline log before touching.
+12. Updater v1 SHIPPED 09-12: `watch-together --upgrade`
+    (`apps/desktop/lib/src/update/updater.dart`, zero Flutter
+    imports, 7 tests) — manifest check, download, sha256, apply
+    over live install (extract-temp + delete-first move-over;
+    ETXTBSY forbids writing the running exe, delete+rename is
+    fine). Version stamped via `--dart-define=APP_VERSION`
+    (wired in `tool/package_linux.sh`; dev runs report
+    `0.0.0-dev`). USER-OWNED PENDING: publish
+    `updates/manifest.json` + release tarball on Forgejo (schema
+    in `updates/manifest.example.json`); until then --upgrade
+    reports failure against the missing manifest. No silent
+    proto jumps: updater warns when manifest protocol != local.
 Environment: dart 3.14 beta, flutter 3.48 beta, mpv+ffmpeg present,
 ~/Videos/chiyo.mp4 sample. Never kill the user's Syncplay mpv
 instance. Git repo at project root (init 09-12); commit code + docs

apps/desktop/lib/main.dart

@@ -8,8 +8,13 @@ import 'package:window_manager/window_manager.dart';
 
 import 'app.dart';
 import 'src/state/session_state.dart';
+import 'src/update/updater.dart';
 
 Future<void> main(List<String> args) async {
+  if (args.contains('--upgrade')) {
+    exitCode = await runUpgrade();
+    exit(exitCode);
+  }
   initLogging();
   if (args.contains('--headless')) {
     await runHeadless(args);

apps/desktop/lib/src/update/updater.dart

@@ -0,0 +1,236 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:archive/archive.dart';
+import 'package:crypto/crypto.dart';
+import 'package:sync_relay_core/core.dart';
+
+// Zero Flutter imports: this file must stay unit-testable with plain
+// `flutter test` (no widgets, no media_kit). Linux-first v1: a CLI flag,
+// `watch-together --upgrade`, that checks the manifest, downloads the
+// tarball, verifies sha256, and extracts it over the live install.
+// Linux allows replacing (unlink/rename) files under a running process —
+// only opening the running binary for writing is refused (ETXTBSY) — so
+// apply is extract-to-temp then delete-first move-over, and the running
+// (old) image just prints the result and exits. Next launch is new.
+
+const updateManifestUrl =
+    'https://git.senkochan.moe/Foxyz/sync_replay_project/raw/branch/main/updates/manifest.json';
+
+const appVersion = String.fromEnvironment('APP_VERSION',
+    defaultValue: '0.0.0-dev');
+
+class UpdateManifest {
+  final String version;
+  final int protocol;
+  final String url;
+  final String sha256;
+  final String notes;
+  const UpdateManifest(
+      {required this.version,
+      required this.protocol,
+      required this.url,
+      required this.sha256,
+      required this.notes});
+
+  factory UpdateManifest.fromJson(Map<String, Object?> json) {
+    final version = json['version'];
+    final protocol = json['protocol'];
+    final url = json['url'];
+    final sha = json['sha256'];
+    if (version is! String ||
+        version.isEmpty ||
+        protocol is! int ||
+        url is! String ||
+        url.isEmpty ||
+        sha is! String ||
+        sha.isEmpty) {
+      throw const FormatException('update manifest missing version/protocol/url/sha256');
+    }
+    return UpdateManifest(
+        version: version,
+        protocol: protocol,
+        url: url,
+        sha256: sha,
+        notes: (json['notes'] as String?) ?? '');
+  }
+}
+
+List<int> parseVersion(String v) {
+  final out = <int>[];
+  for (final part in v.split('.')) {
+    final m = RegExp(r'\d+').firstMatch(part);
+    if (m == null) break;
+    out.add(int.parse(m.group(0)!));
+    if (out.length == 3) break;
+  }
+  while (out.length < 3) {
+    out.add(0);
+  }
+  return out;
+}
+
+bool isNewerVersion(String current, String latest) {
+  final c = parseVersion(current);
+  final l = parseVersion(latest);
+  for (var i = 0; i < 3; i++) {
+    if (l[i] != c[i]) return l[i] > c[i];
+  }
+  return false;
+}
+
+Future<UpdateManifest> fetchManifest(
+    {HttpClient? http, String url = updateManifestUrl}) async {
+  final client = http ?? HttpClient();
+  try {
+    final req = await client
+        .getUrl(Uri.parse(url))
+        .timeout(const Duration(seconds: 15));
+    final res = await req.close();
+    final body = await res.transform(utf8.decoder).join();
+    if (res.statusCode != 200) {
+      throw HttpException('manifest fetch failed: HTTP ${res.statusCode}');
+    }
+    final decoded = jsonDecode(body);
+    if (decoded is! Map<String, Object?>) {
+      throw const FormatException('manifest is not a JSON object');
+    }
+    return UpdateManifest.fromJson(decoded);
+  } finally {
+    client.close();
+  }
+}
+
+Future<void> downloadFile(String url, File dest, {HttpClient? http}) async {
+  final client = http ?? HttpClient();
+  try {
+    final req = await client
+        .getUrl(Uri.parse(url))
+        .timeout(const Duration(seconds: 15));
+    final res = await req.close();
+    if (res.statusCode != 200) {
+      throw HttpException('download failed: HTTP ${res.statusCode}');
+    }
+    final sink = dest.openWrite();
+    try {
+      await res.pipe(sink);
+    } finally {
+      await sink.close();
+    }
+  } finally {
+    client.close();
+  }
+}
+
+Future<void> verifySha256(File file, String want) async {
+  final digest = await sha256.bind(file.openRead()).first;
+  if (digest.toString() != want.trim().toLowerCase()) {
+    throw const FormatException('sha256 mismatch — download is corrupt');
+  }
+}
+
+// Release bundle layout is <root>/<binary> with <root>/data and <root>/lib
+// siblings. Anything else (dev runs, dart run) is not a packaged install.
+Directory? findInstallRoot(String executablePath) {
+  final dir = File(executablePath).parent;
+  if (Directory('${dir.path}/data').existsSync() &&
+      Directory('${dir.path}/lib').existsSync()) {
+    return dir;
+  }
+  return null;
+}
+
+// Extract to temp, then move every file over delete-first: opening the
+// running executable for writing throws ETXTBSY, delete+rename does not.
+Future<void> applyTarball(File tarball, Directory root) async {
+  final raw = await tarball.readAsBytes();
+  final archive = TarDecoder().decodeBytes(GZipDecoder().decodeBytes(raw));
+  final stage =
+      await Directory.systemTemp.createTemp('watch-together-update');
+  try {
+    for (final entry in archive) {
+      final name = entry.name;
+      if (name.isEmpty || name.startsWith('/') || name.contains('..')) {
+        throw FormatException('unsafe tar entry: $name');
+      }
+      final target = File('${stage.path}/$name');
+      if (entry.isDirectory) {
+        await Directory(target.path).create(recursive: true);
+      } else if (entry.isFile) {
+        await target.parent.create(recursive: true);
+        await target.writeAsBytes(entry.content as List<int>);
+      } else {
+        throw FormatException('unsupported tar entry: $name');
+      }
+    }
+    await for (final entity
+        in stage.list(recursive: true, followLinks: false)) {
+      if (entity is! File) continue;
+      final rel = entity.path.substring(stage.path.length + 1);
+      final dest = File('${root.path}/$rel');
+      await dest.parent.create(recursive: true);
+      if (await dest.exists() || await Link(dest.path).exists()) {
+        await dest.delete();
+      }
+      await entity.rename(dest.path);
+    }
+  } finally {
+    if (await stage.exists()) {
+      await stage.delete(recursive: true);
+    }
+  }
+}
+
+// Returns a process exit code: 0 ok / already current, 1 failure,
+// 2 not a packaged install (update manually).
+Future<int> runUpgrade(
+    {String currentVersion = appVersion,
+    String manifestUrl = updateManifestUrl,
+    HttpClient? http,
+    String? executablePath,
+    Directory? installRoot}) async {
+  stdout.writeln('watch-together $currentVersion (proto ${RelayConstants.protoVersion})');
+  late final UpdateManifest manifest;
+  try {
+    manifest = await fetchManifest(http: http, url: manifestUrl);
+  } catch (e) {
+    stdout.writeln('update check failed: $e');
+    return 1;
+  }
+  if (!isNewerVersion(currentVersion, manifest.version)) {
+    stdout.writeln('already up to date (${manifest.version}).');
+    return 0;
+  }
+  stdout.writeln('update available: ${manifest.version} (proto ${manifest.protocol})');
+  if (manifest.notes.isNotEmpty) {
+    stdout.writeln(manifest.notes);
+  }
+  if (manifest.protocol != RelayConstants.protoVersion) {
+    stdout.writeln('WARNING: protocol ${manifest.protocol} != ${RelayConstants.protoVersion} — '
+        'update together with everyone in the room, mixed versions cannot sync.');
+  }
+  final root = installRoot ??
+      findInstallRoot(executablePath ?? Platform.resolvedExecutable);
+  if (root == null) {
+    stdout.writeln('not a packaged install — download the tarball and update manually.');
+    return 2;
+  }
+  final tmp = await Directory.systemTemp.createTemp('watch-together-dl');
+  try {
+    final file = File('${tmp.path}/update.tar.gz');
+    stdout.writeln('downloading ${manifest.url} ...');
+    await downloadFile(manifest.url, file, http: http);
+    await verifySha256(file, manifest.sha256);
+    stdout.writeln('verified, applying over ${root.path} ...');
+    await applyTarball(file, root);
+  } catch (e) {
+    stdout.writeln('update failed: $e');
+    return 1;
+  } finally {
+    if (await tmp.exists()) {
+      await tmp.delete(recursive: true);
+    }
+  }
+  stdout.writeln('updated to ${manifest.version} — restart the app to use it.');
+  return 0;
+}

apps/desktop/pubspec.lock

@@ -10,7 +10,7 @@ packages:
     source: hosted
     version: "1.1.1"
   archive:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: archive
       sha256: ace891da0862b0e4cabbb064ee3fd87b2728b898949fdb366d83fe98342c9f19
@@ -90,7 +90,7 @@ packages:
     source: hosted
     version: "0.3.5+5"
   crypto:
-    dependency: transitive
+    dependency: "direct main"
     description:
       name: crypto
       sha256: c8ea0233063ba03258fbcf2ca4d6dadfefe14f02fab57702265467a19f27fadf

apps/desktop/pubspec.yaml

@@ -23,6 +23,8 @@ dependencies:
   hive_ce_flutter: ^2.3.4
   image: ^4.9.2
   window_manager: ^0.5.2
+  archive: ^4.0.7
+  crypto: ^3.0.6
 dev_dependencies:
   flutter_test:
     sdk: flutter

apps/desktop/test/updater_test.dart

@@ -0,0 +1,173 @@
+import 'dart:convert';
+import 'dart:io';
+
+import 'package:archive/archive.dart';
+import 'package:crypto/crypto.dart';
+import 'package:flutter_test/flutter_test.dart';
+import 'package:watch_together/src/update/updater.dart';
+
+void main() {
+  test('version compare', () {
+    expect(isNewerVersion('0.1.0', '0.1.1'), isTrue);
+    expect(isNewerVersion('0.1.0', '0.2.0'), isTrue);
+    expect(isNewerVersion('0.1.0', '1.0.0'), isTrue);
+    expect(isNewerVersion('0.0.0-dev', '0.1.0'), isTrue);
+    expect(isNewerVersion('0.1.0', '0.1.0'), isFalse);
+    expect(isNewerVersion('0.2.0', '0.1.9'), isFalse);
+  });
+
+  test('manifest rejects missing fields', () {
+    expect(() => UpdateManifest.fromJson({}), throwsFormatException);
+    expect(
+        () => UpdateManifest.fromJson({
+              'version': '0.2.0',
+              'protocol': 4,
+              'url': 'https://x/y.tar.gz',
+            }),
+        throwsFormatException);
+  });
+
+  test('findInstallRoot honors bundle layout', () async {
+    final tmp = await Directory.systemTemp.createTemp('wt-root-test');
+    try {
+      final root = Directory('${tmp.path}/root');
+      await Directory('${root.path}/data').create(recursive: true);
+      await Directory('${root.path}/lib').create(recursive: true);
+      final exe = File('${root.path}/watch_together')..createSync();
+      expect(findInstallRoot(exe.path)?.path, root.path);
+      expect(findInstallRoot('${tmp.path}/stray-binary'), isNull);
+    } finally {
+      await tmp.delete(recursive: true);
+    }
+  });
+
+  group('upgrade flow', () {
+    late HttpServer server;
+    late Directory work;
+    late List<int> tarball;
+    late String tarSha;
+    var tarHits = 0;
+
+    setUp(() async {
+      tarHits = 0;
+      work = await Directory.systemTemp.createTemp('wt-up-test');
+      final archive = Archive();
+      final v2 = utf8.encode('binary-v2');
+      archive.addFile(ArchiveFile('watch_together', v2.length, v2));
+      final cfg = utf8.encode('fresh-config');
+      archive.addFile(ArchiveFile('data/fresh.cfg', cfg.length, cfg));
+      tarball = GZipEncoder().encode(TarEncoder().encode(archive));
+      tarSha = sha256.convert(tarball).toString();
+      server = await HttpServer.bind(InternetAddress.loopbackIPv4, 0);
+      server.listen((req) async {
+        if (req.uri.path == '/manifest.json') {
+          final manifest = {
+            'version': '0.2.0',
+            'protocol': 4,
+            'url':
+                'http://127.0.0.1:${server.port}/watch-together-0.2.0.tar.gz',
+            'sha256': tarSha,
+            'notes': 'test build',
+          };
+          req.response
+            ..statusCode = 200
+            ..write(jsonEncode(manifest));
+        } else if (req.uri.path == '/watch-together-0.2.0.tar.gz') {
+          tarHits++;
+          req.response
+            ..statusCode = 200
+            ..add(tarball);
+        } else {
+          req.response.statusCode = 404;
+        }
+        await req.response.close();
+      });
+    });
+
+    tearDown(() async {
+      await server.close(force: true);
+      if (await work.exists()) {
+        await work.delete(recursive: true);
+      }
+    });
+
+    Future<Directory> fakeRoot() async {
+      final root = Directory('${work.path}/root');
+      await Directory('${root.path}/data').create(recursive: true);
+      await Directory('${root.path}/lib').create(recursive: true);
+      await File('${root.path}/watch_together')
+          .writeAsString('binary-v1', flush: true);
+      return root;
+    }
+
+    String manifestUrl() =>
+        'http://127.0.0.1:${server.port}/manifest.json';
+
+    test('downloads, verifies and applies', () async {
+      final root = await fakeRoot();
+      final rc = await runUpgrade(
+          currentVersion: '0.1.0',
+          manifestUrl: manifestUrl(),
+          installRoot: root);
+      expect(rc, 0);
+      expect(tarHits, 1);
+      expect(await File('${root.path}/watch_together').readAsString(),
+          'binary-v2');
+      expect(await File('${root.path}/data/fresh.cfg').readAsString(),
+          'fresh-config');
+    });
+
+    test('up to date downloads nothing', () async {
+      final root = await fakeRoot();
+      final rc = await runUpgrade(
+          currentVersion: '0.2.0',
+          manifestUrl: manifestUrl(),
+          installRoot: root);
+      expect(rc, 0);
+      expect(tarHits, 0);
+      expect(await File('${root.path}/watch_together').readAsString(),
+          'binary-v1');
+    });
+
+    test('bad hash aborts, install untouched', () async {
+      await server.close(force: true);
+      server = await HttpServer.bind(InternetAddress.loopbackIPv4, 0);
+      server.listen((req) async {
+        if (req.uri.path == '/manifest.json') {
+          req.response
+            ..statusCode = 200
+            ..write(jsonEncode({
+              'version': '0.2.0',
+              'protocol': 4,
+              'url':
+                  'http://127.0.0.1:${server.port}/watch-together-0.2.0.tar.gz',
+              'sha256': '0' * 64,
+              'notes': '',
+            }));
+        } else {
+          tarHits++;
+          req.response
+            ..statusCode = 200
+            ..add(tarball);
+        }
+        await req.response.close();
+      });
+      final root = await fakeRoot();
+      final rc = await runUpgrade(
+          currentVersion: '0.1.0',
+          manifestUrl: manifestUrl(),
+          installRoot: root);
+      expect(rc, 1);
+      expect(await File('${root.path}/watch_together').readAsString(),
+          'binary-v1');
+    });
+
+    test('unknown layout asks for manual update', () async {
+      final rc = await runUpgrade(
+          currentVersion: '0.1.0',
+          manifestUrl: manifestUrl(),
+          executablePath: '${work.path}/stray-binary');
+      expect(rc, 2);
+    });
+  });
+}

docs/ROADMAP.md

@@ -1,99 +1,65 @@
-# ROADMAP — sync_relay_project (canonical phase tracker)
+# ROADMAP — sync_relay_project (backlog tracker)
 
-This is the durable source of truth for phases. Chat is ephemeral;
+This is the durable source of truth for what is built and what is next.
-this file + `HANDOFF.md` (root) + `PROTOCOL.md` / `ARCHITECTURE.md`
+Chat is ephemeral; this file + `HANDOFF.md` (root) + `PROTOCOL.md` /
-carry state across sessions. Update this file when a phase changes
+`ARCHITECTURE.md` carry state across sessions. Check an item off when it
-state. Proto bumps still require PROTOCOL.md same-commit.
+lands, same commit as the code. Proto bumps still require PROTOCOL.md
+same-commit.
 
 Model: direct-serve (host opens ports, clients open nothing). The
 brief's old WSS host-upload tunnel is obsolete unless a VPS tier
 needs remote-host upload. Server = Relic, client WS =
 web_socket_channel. Protocol still v4.
 
-## Status legend
+## Built (phases 0–4 + hardening — done, details in git history)
 
-- DONE: exit criteria met, tests green at the time.
+Scaffold + CI, mpv Range contract, sessions/tokens/media endpoint,
-- PARTIAL: shipped + tested, exits still open.
+sync engine + quorum, desktop shell (SyncClient, RoomDiff, media_kit,
-- TODO: not started or explicitly deferred.
+avatars, toasts+sheet, reconnect), presence hardening, frameless
+chrome, chat/idle fixes, chat double-row fix, avatar 256 KiB cap,
+Linux tarball packager + Discord upload card, updater v1
+(`--upgrade`: manifest check, download, sha256, apply-over).
+WAN-tested 2-client. Counts at last green: core 42, server 41,
+desktop 17 + 7 updater.
 
-## Phase 0 — Scaffold (DONE)
+## Backlog (priority order, each one sitting-sized)
 
-Monorepo, path deps, CI (`dart analyze` + `dart test` on core/server),
+1. Update endpoint live: publish `updates/manifest.json` + first
-logging/config/errors, Flutter-free enforcement tests, relay binary
+   release tarball on Forgejo (user-owned step; schema in
-binds/logs/exits, stub ARCHITECTURE.md.
+   `updates/manifest.example.json`). Until then `--upgrade` reports
+   up-to-date against a missing manifest.
+2. Jumpy seek: live repro with timeline log first, then fix the
+   seek-land retry vs deadband/debounce fight.
+3. Sounds swap-in: replace `NoopSfxService` (flutter_soloud preload,
+   Kenney/ObsydianX/akx sources in HANDOFF §7); keep seek/pause/
+   resume cues muted or near-silent.
+4. `/health` auth + stop broadcasting the full media URL (api_key
+   leaks onto the wire).
+5. File-join wart: welcome mediaUrl advertises 127.0.0.1, remote file
+   joiners fail-open then self-heal on first room broadcast.
+6. Cache-exhaustion long outage via `tool/shaper.dart --kill-after`.
+7. Phase 5 chaos suite (host drop 5 s / 30 s, viewer stall, 20-seek
+   storm) + OOM / stuck-room / drift-recovery assertions.
+8. Windows zip in `tool/package_linux.sh`'s sibling + Discord card.
+9. TLS/Caddy doc.
+10. Chat history pane (schema exists, Activity log only for now).
+11. Backfill LAN soak + 1.4 GB test details (record-only, user ran
+    both 09-12).
 
-## Phase 1 — mpv HTTP contract (DONE)
+## Epics (multi-sitting, scheduled whole — not before the backlog
+friction items above, except Jellyfin which is next feature)
 
-Relic `resolveMediaRequest` + `mountMediaRoute`, full Range table
+- File relay (original brief, second half): links shipped, relay
-(200 / 206×3 shapes / 416 / 401 / 403 / 410 / 503), byte-exact tests,
+  unbuilt. Split into sub-tasks when scheduled.
-real mpv traces in `mpv-http-contract.md`, `tool/range_logger.dart`
+- Jellyfin native — NEXT feature.
-+ `tool/shaper.dart` (KB/s cap, latency, --kill-after).
+- Updater expansion: in-app prompt, Windows helper (locked-exe
-
+  dance), auto-restart after apply.
-## Phase 2 — Sessions + media endpoint (DONE)
+- Playlist (`queue-add`/`queue-skip`, shape reserved in PROTOCOL.md),
-
-Secret → 128-bit token, 401/403/410 gates, kick kills WS+media,
-byte counters, `tool/fake_viewer.dart` ALL PASS live. Proto v2→v3
-for `kicked`/`kick`. Media: local-file relay SHIPPED
-(`FileMediaSource` + token-gated Range route); links path SHIPPED
-(server distributes shared URL, viewers stream direct);
-`HttpSource` (server-side URL fetch) DEFERRED to Phase 8; WSS
-upload tunnel NOT BUILT (spec reserved in ARCHITECTURE.md).
-
-## Phase 3 — Sync engine + readiness (DONE)
-
-`RoomEngine` (injectable clock): server-owned clock, reports never
-move it, stale-eventId guard, free seeks, PLAYING/HELD gate, quorum
-(in-set≥2 unless ≤1 fresh), swap reset, force with actor feed.
-22+ engine tests, `tool/e2e_check.dart` 15/15 sim. Syncplay audit
-done (conscious deviations documented in HANDOFF §2). Proto v4.
-Follow-ups landed: NaN guards, name/chat caps, stale vs leave feed,
-1 Hz feed flush, silent-drop (15 s stale / 30 s drop + close).
-
-## Phase 4 — Desktop app (PARTIAL)
-
-Shipped: SyncClient framing, RoomDiff (eventId diff, 0.95× latch),
-media_kit wiring, Space=ready, avatars, toasts+sheet, health display,
-reconnect loop. Counts at last green: core 42, server 40, desktop 17.
-Late 09-12 session: internet test PASSED (WAN, port 6969, 2-client);
-server logging wired into app (`initLogging` in `main.dart` + hello
-join/reject logs in `room_hub.dart`); Cancel aborts a pending
-connect (`SyncClient.disconnect` completes the welcome future);
-first-join failure shows the dialog and stops (auto-reconnect only
-after an established session drops).
-Open exits (manual, user-driven): bisect flags REMOVED 09-12;
-2-client LAN soak + 1.4 GB real-file test user-reports-done 09-12
-(details pending). Still open: cache-exhaustion long outage.
-
-## Phase 5 — Resilience (PARTIAL)
-
-Shipped: isClosed sweep, onError forget, stop() closes sockets,
-silence-timeout + reconnect loop. Never run: shaper chaos suite
-(host drop 5 s / 30 s, viewer stall, 20-seek storm), OOM / stuck-room
-/ drift-recovery assertions, CI wiring.
-
-## Phase 6 — Identity & social (PARTIAL)
-
-Shipped: names (32 cap), avatars (256 KiB cap, 128 px PNG picker, transparency kept), kick nudge
-+ reason, feed attribution. Open: real chat pane/history (schema
-only), sounds swap-in (wiring + NoopSfxService ready; pick
-flutter_soloud or equivalent, Kenney/ObsydianX/akx sources in
-HANDOFF §7).
-
-## Phase 7 — Deployment & updates (TODO, deferred)
-
-Thin `bin/server.dart` compiles; systemd unit exists. Missing:
-Windows zip, Linux tar/AppDir, TLS/Caddy doc, update manifest +
-verifier. Needs explicit user go + code-signing decision.
-
-## Phase 8 — Optional quality (TODO, deferred)
-
-Playlist (`queue-add`/`queue-skip`, shape reserved in PROTOCOL.md),
   sidecar subtitles, local-file fallback (viewer plays matching
-size+duration file locally, still synced — saves host uplink),
+  size+duration file locally, still synced), `HttpSource` (host
-`HttpSource` (host pastes a direct-stream URL, server fetches +
+  pastes a direct-stream URL, server fetches + re-serves).
-re-serves — makes Jellyfin usable through the whitelist today, no
-native integration). No code until approved.
 
-## Deferred backlog (needs explicit approval)
+## Deferred (needs explicit approval; transcode is never)
 
-Jellyfin native, P2P/WebRTC, multi-session, transcode, Android.
+P2P/WebRTC, multi-session, Android. Transcode: NEVER (user decision
+09-12 — not the age for it anymore).

tool/package_linux.sh

@@ -30,7 +30,7 @@ VERSION="$(sed -n 's/^version: \([0-9.]*\).*/\1/p' "$APP/pubspec.yaml")"
 if [[ -z "$VERSION" ]]; then echo "error: version not found in $APP/pubspec.yaml" >&2; exit 1; fi
 
 if [[ "$SKIP_BUILD" != "1" ]]; then
-  (cd "$APP" && flutter build linux --release)
+  (cd "$APP" && flutter build linux --release --dart-define=APP_VERSION="$VERSION")
 fi
 
 BUNDLE="$APP/build/linux/$ARCH/release/bundle"

updates/manifest.example.json

@@ -0,0 +1,7 @@
+{
+  "version": "0.2.0",
+  "protocol": 4,
+  "url": "https://git.senkochan.moe/Foxyz/sync_replay_project/releases/download/v0.2.0/watch-together-0.2.0-linux-x64.tar.gz",
+  "sha256": "<sha256 of the tarball, filled in at release time>",
+  "notes": "One-line highlight of what changed."
+}