Fix Bazarr spoof series IDs and SignalR WebSocket (DOWN badges)

[zab1996]

Summary

• Align Sonarr series IDs across HTTP spoof endpoints and SignalR events so Bazarr can sync/insert series and episode files consistently (TMDB-preferred IDs, empty IMDB handling, SignalR using series_resource['id']).
• Fix Series/Movies DOWN badges by completing Bazarr’s websocket-only SignalR handshake: Werkzeug WebSocketAwareHandler injects werkzeug.socket, handles /signalr upgrades outside Flask middleware, and runs the JSON hub session via simple-websocket.

Runtime notes

• Requires simple-websocket (already in requirements.txt).
• The web server must use the new make_server(..., request_handler=WebSocketAwareHandler) path in run_server(). Stock app.run(...) alone will not clear DOWN badges, because Bazarr’s bundled signalrcore always opens WebSockets and ignores SSE-only negotiate responses.
• Verified locally: Bazarr logs SignalR client for Sonarr/Radarr is connected and waiting for events after deploy; HTTP sync already worked (shows/movies present).

Test plan

• Enable Bazarr Integration in Symlinked/Local (or Plex) mode and point Bazarr Sonarr/Radarr at cli_debrid
• Confirm negotiate returns WebSockets in availableTransports
• Confirm Bazarr log shows SignalR connected for Sonarr and Radarr (DOWN badges clear)
• Confirm series/movie HTTP sync still works and series IDs stay consistent between /api/v3/series and SignalR episode-file events
• Optional: trigger a media event and confirm Bazarr receives SignalR receiveMessage traffic

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