feat: realtime WebSocket layer for live events and streaming logs
- Backend: ConnectionManager, Redis-backed bus with in-process fallback,
channel authorization, and typed emit helpers wired into workers
(ai_runtime, sandbox_gateway), workforce/sandbox/billing/audit/error services.
- Frontend: single shared WS client with backoff + heartbeat, RealtimeProvider,
useLiveChannel/useLiveEvent hooks, live indicators on task detail, manager
chat, dashboard, traces, sandbox terminal, admin errors, and billing.
- Contracts: WsEvent/WsServerFrame/WsClientFrame types mirroring the port.
All 255 backend tests pass; web typecheck and build pass.
mjalmoudy94
f1e5df29ce