1.0 library + player settings: Jellyfin/Link/Files library with details panel, player gear, settings cards, host flag

Library: source switch, selectable cards with a details panel, one merged
Continue row, Latest grouped per series without re-releases, Link page with
previews and recent links, Files embedded. Player: gear popover in both
designs, progress line while controls hide, live hwdec. Settings rebuilt as
cards. State marks the host member (proto stays 9, unreleased); hosting
shows LAN invite addresses; window buttons in fullscreen. fadeThrough keeps
the outgoing view's state.

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

packages/core/test/jellyfin_client_test.dart

@@ -164,6 +164,28 @@ void main() {
       expect(http.last.uri.queryParameters['parentId'], 'a656b907eb3a73532e40e44b968d0225');
     });
 
+    test('latest ungrouped and recently played: query params, dates', () async {
+      http.on('GET', '/Items/Latest', body: '[{"Id":"e","Type":"Episode",'
+          '"PremiereDate":"2010-01-01T00:00:00.0000000Z","DateCreated":"2026-10-01T12:00:00.0000000Z"}]');
+      final latest = await client.latest('lib', limit: 100, groupItems: false);
+      expect(http.last.uri.queryParameters['groupItems'], 'false');
+      expect(http.last.uri.queryParameters['fields'], contains('DateCreated'));
+      expect(latest.single.premiereDate, DateTime.utc(2010));
+      expect(latest.single.dateCreated, DateTime.utc(2026, 10, 1, 12));
+
+      http.on('GET', '/Items', body: '{"Items":[{"Id":"p","Type":"Episode","SeriesId":"s",'
+          '"UserData":{"Played":true,"LastPlayedDate":"2026-10-07T20:00:00Z"}}],"TotalRecordCount":1}');
+      final played = await client.recentlyPlayed(limit: 50);
+      final q = http.last.uri.queryParameters;
+      expect(q['filters'], 'IsPlayed');
+      expect(q['sortBy'], 'DatePlayed');
+      expect(q['sortOrder'], 'Descending');
+      expect(q['includeItemTypes'], 'Episode,Movie');
+      expect(q['recursive'], 'true');
+      expect(q['limit'], '50');
+      expect(played.single.userData.lastPlayedDate, DateTime.utc(2026, 10, 7, 20));
+    });
+
     test('library page: query params and paging', () async {
       http.on('GET', '/Items', fixture: 'series_page');
       const q = JellyfinItemQuery(

packages/core/test/sync_engine_test.dart

@@ -538,6 +538,21 @@ void main() {
     });
   });
 
+  test('host flag: only the marked member, on the wire as host:true', () {
+    join('a', 'alice');
+    join('b', 'bob');
+    engine.members['a']!.host = true;
+    final members = {for (final m in engine.broadcast().members) m.name: m};
+    expect(members['alice']!.host, isTrue);
+    expect(members['bob']!.host, isFalse);
+    final json = engine.broadcast().toJson()['members'] as List;
+    expect((json.first as Map)['host'], isTrue);
+    expect((json.last as Map).containsKey('host'), isFalse);
+    final back = StateBroadcast.fromJson(
+        Map<String, Object?>.from(jsonDecode(jsonEncode(engine.broadcast().toJson())) as Map));
+    expect([for (final m in back.members) m.host], [true, false]);
+  });
+
   group('profile + avatars', () {
     // Real magic bytes: anything that is not PNG/JPEG/WebP/GIF is dropped.
     final png = base64Encode([0x89, 0x50, 0x4E, 0x47, ...List<int>.generate(60, (i) => i)]);