fix(jellyfin): fix discovery loop, device identity, tray state, and Disc

- Derive device identity from OS hostname; remove legacy configurable client/device fields
- Prevent discovery playback from reloading active item, misreporting pause state, and duplicate overlay restores
- Restart stale tray discovery sessions without re-login when server drops SubMiner cast target
- Sync tray discovery checkbox state on Linux after CLI/startup/remote-session changes
- Stop Discord presence falling back to stream URLs; prime title before tokenized stream loads
- Fix picker library discovery when log level is above info
- Fix config.example.jsonc trailing commas and array formatting

src/main/runtime/composers/jellyfin-remote-composer.ts

@@ -101,6 +101,7 @@ export function composeJellyfinRemoteHandlers(
       getConfiguredSession: options.getConfiguredSession,
       getClientInfo: options.getClientInfo,
       getJellyfinConfig: options.getJellyfinConfig,
+      getActivePlayback: options.getActivePlayback,
       playJellyfinItem: options.playJellyfinItem,
       logWarn: options.logWarn,
     });

src/main/runtime/composers/jellyfin-runtime-composer.test.ts

@@ -13,11 +13,9 @@ test('composeJellyfinRuntimeHandlers returns callable jellyfin runtime handlers'
     },
     getJellyfinClientInfoMainDeps: {
       getResolvedJellyfinConfig: () => ({}) as never,
-      getDefaultJellyfinConfig: () => ({
-        clientName: 'SubMiner',
-        clientVersion: 'test',
-        deviceId: 'dev',
-      }),
+      getHostName: () => 'workstation',
+      defaultClientName: 'SubMiner',
+      defaultClientVersion: 'test',
     },
     waitForMpvConnectedMainDeps: {
       getMpvClient: () => null,
@@ -140,6 +138,7 @@ test('composeJellyfinRuntimeHandlers returns callable jellyfin runtime handlers'
       defaultDeviceId: 'dev',
       defaultClientName: 'SubMiner',
       defaultClientVersion: 'test',
+      getHostName: () => 'workstation',
       logInfo: () => {},
       logWarn: () => {},
     },

src/main/runtime/composers/jellyfin-runtime-composer.ts

@@ -100,7 +100,11 @@ export type JellyfinRuntimeComposerOptions = ComposerInputs<{
   >;
   startJellyfinRemoteSessionMainDeps: Omit<
     StartRemoteSessionMainDeps,
-    'getJellyfinConfig' | 'handlePlay' | 'handlePlaystate' | 'handleGeneralCommand'
+    | 'getJellyfinConfig'
+    | 'getClientInfo'
+    | 'handlePlay'
+    | 'handlePlaystate'
+    | 'handleGeneralCommand'
   >;
   stopJellyfinRemoteSessionMainDeps: Parameters<
     typeof createBuildStopJellyfinRemoteSessionMainDepsHandler
@@ -236,6 +240,7 @@ export function composeJellyfinRuntimeHandlers(
     createBuildStartJellyfinRemoteSessionMainDepsHandler({
       ...options.startJellyfinRemoteSessionMainDeps,
       getJellyfinConfig: () => getResolvedJellyfinConfig(),
+      getClientInfo: () => getJellyfinClientInfo(),
       handlePlay: (payload) => handleJellyfinRemotePlay(payload),
       handlePlaystate: (payload) => handleJellyfinRemotePlaystate(payload),
       handleGeneralCommand: (payload) => handleJellyfinRemoteGeneralCommand(payload),