Swap shows only the new media, no guessed endings, quieter screen

- A swap stops the previous media at once; buffer counts only for the
  media the player holds (client) and the current mediaId (server), so
  the old video can no longer start the new one.
- The automatic frozen-picture reload is gone (false alarms on still
  scenes); Reload video stays.
- The "Next episode" pill shows only from a known ending.
- A web link's thumbnail is its cover, under the video's own name.
- While playing, the unread chip stays off the picture; chat pop-ups
  can be All / Only when paused / Off.
- Server fetch failures say when the server has no cookies.

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

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

@@ -47,18 +47,20 @@ 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 +118,7 @@ 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,

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

@@ -23,7 +23,6 @@ import '../shaders/shader_presets.dart';
 import '../state/session_state.dart';
 import '../state/settings.dart';
 import '../widgets/app_keys.dart';
-import '../widgets/shown_frame_probe.dart';
 import '../widgets/text_focus.dart';
 import '../widgets/window_buttons.dart';
 import 'avatar.dart';
@@ -93,7 +92,6 @@ 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;
@@ -114,7 +112,6 @@ 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);
@@ -132,8 +129,6 @@ class _SessionPlayerState extends State<SessionPlayer> {
   void dispose() {
     HardwareKeyboard.instance.removeHandler(_globalKey);
     AppKeys.removeChatToggle(_toggleChat);
-    final playback = _coord.playback;
-    if (playback.shownFrame == _frameProbe.sample) playback.shownFrame = null;
     _stopShaderWatch();
     _noFocus.dispose();
     _controlsShown.dispose();
@@ -287,11 +282,7 @@ class _SessionPlayerState extends State<SessionPlayer> {
           return 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(),
@@ -755,15 +746,18 @@ class _SessionPlayerState extends State<SessionPlayer> {
       );
 
   /// Fullscreen hides the strip and its chat badge: while there is unread
-  /// chat and the controls are down, a small glass chip says so top right.
+  /// 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: 16,
         top: 16,
         child: IgnorePointer(
           child: ValueListenableBuilder<bool>(
             valueListenable: _controlsShown,
-            builder: (context, shown, _) {
-              final on = widget.unread > 0 && !widget.chatOpen && !shown;
+            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,
@@ -783,7 +777,7 @@ class _SessionPlayerState extends State<SessionPlayer> {
                   ),
                 ),
               );
-            },
+            }),
           ),
         ),
       );

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

@@ -723,8 +723,8 @@ 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});
 
@@ -746,11 +746,39 @@ class NotificationsInfo extends StatelessWidget {
           child: Column(
             crossAxisAlignment: CrossAxisAlignment.stretch,
             children: [
-              line('Joins, leaves, video changes and chat',
+              line('Joins, leaves and video changes',
                   'Pop up bottom left for 5 s, with the person\'s picture'),
+              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),
+                        ],
+                      ),
+                    ),
+                    SignalBuilder(
+                      builder: (context) => DropdownButton<ChatPopups>(
+                        key: const ValueKey('chat-popups'),
+                        value: AppSettings.instance.chatPopups.value,
+                        onChanged: (v) {
+                          if (v != null) AppSettings.instance.setChatPopups(v);
+                        },
+                        items: [
+                          for (final m in ChatPopups.values) DropdownMenuItem(value: m, child: Text(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, a frozen video reloaded, the idle warning'),
+              line('App notices', 'Shader changes, the idle warning'),
             ],
           ),
         ),

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

@@ -82,7 +82,8 @@ class StartCard extends StatelessWidget {
             child: Row(
               crossAxisAlignment: CrossAxisAlignment.end,
               children: [
-                if (!small) ...[
+                // A thumbnail already fills the card as the banner.
+                if (!small && !now.thumbnail) ...[
                   ArtCover(hash: now.posterHash, width: coverWidth),
                   const SizedBox(width: 24),
                 ],

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';
 
@@ -47,7 +48,7 @@ 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. A click
 /// on a chat toast opens the chat ([onOpenChat]); the rest let clicks
-/// through.
+/// through. Chat toasts follow [AppSettings.chatPopups].
 class PartyToasts extends StatefulWidget {
   final Duration life;
   final VoidCallback? onOpenChat;
@@ -76,8 +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);
         }
       });
     });