backend-ci.yml's `test -z "$(gofmt -l .)"` strict gate (added in
13c21ac11) failed on a backlog of unformatted files. None of the
85 files in this commit had been edited since the gate was added
because no push touched veza-backend-api/** in between, so the
gate never fired until today's CI fixes triggered it.
The diff is exclusively whitespace alignment in struct literals
and trailing-space comments. `go build ./...` and the full test
suite (with VEZA_SKIP_INTEGRATION=1 -short) pass identically.
- Create Hub with register/unregister/broadcast, room/user index
- Create Client with readPump/writePump goroutines, 30s ping keepalive
- Define all 18 incoming + 18 outgoing message types matching Rust protocol
- Add ValidateChatToken to ChatService for JWT validation
- Update WSUrl from /ws to /api/v1/ws
- Register GET /api/v1/ws endpoint in router
- Create ChatWebSocketHandler for WebSocket upgrade and auth
