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

changes/fix-discord-presence-jellyfin-title.md

@@ -0,0 +1,4 @@
+type: fixed
+area: integrations
+
+- Prevented Discord Rich Presence from falling back to Jellyfin stream URLs, and primed Jellyfin playback titles before loading tokenized streams so presence shows the show/episode title

changes/fix-jellyfin-discovery-playback-loop.md

@@ -0,0 +1,4 @@
+type: fixed
+area: jellyfin
+
+- Prevented Jellyfin discovery playback from reloading the active item, misreporting paused mpv playback as still playing, retrying startup unpause after playback is paused again, unpausing after a manual `y-t` overlay toggle during startup, repeatedly restoring the overlay from duplicate ready signals, missing delayed Japanese subtitle selection on startup, letting later German/Russian subtitle loads steal the selected Japanese track, and spawning long-lived sidebar ffmpeg extractors against Jellyfin stream URLs.

changes/fix-jellyfin-host-device-identity.md

@@ -0,0 +1,4 @@
+type: fixed
+area: jellyfin
+
+- Derived Jellyfin cast device identity from the OS hostname, always reports the client as SubMiner, and ignores legacy configurable Jellyfin client/device identity fields so multiple SubMiner installs no longer share the same remote-session identity.

changes/fix-jellyfin-tray-discovery-active-state.md

@@ -0,0 +1,4 @@
+type: fixed
+area: jellyfin
+
+- Keep the Jellyfin discovery tray checkbox in sync on Linux after tray, CLI, or startup remote-session changes, with a visible check mark when Linux tray hosts ignore native checkbox rendering.

changes/fix-jellyfin-tray-discovery-stale-session.md

@@ -0,0 +1,4 @@
+type: fixed
+area: jellyfin
+
+- Restarted stale Jellyfin tray discovery sessions when the server no longer lists the SubMiner cast target, avoiding a needless Jellyfin re-login.

changes/jellyfin-picker-log-level.md

@@ -0,0 +1,4 @@
+type: fixed
+area: jellyfin
+
+- Kept Jellyfin picker library discovery working when the running app log level is above info.