Create migration m20260417_000001_add_stream_to_room_ai that adds
the `stream BOOLEAN NOT NULL DEFAULT true` column to room_ai.
The model definition includes this field but the original migration
was missing it.
Also format libs/api/room/ws.rs and add gitdata.ai to allowed
WS origins.
validate_origin() only allowed localhost origins by default, causing
production WebSocket connections to be rejected. Now it reads
APP_DOMAIN_URL and APP_STATIC_DOMAIN from env and automatically
adds their http/https/ws/wss variants to the allowed origins list.
Also add APP_DOMAIN_URL to the production configmap.
