channel_stream called validate_channel_access, which HTTP-loopbacked to
GET /api/permissions/check — a route that does not exist. Every call 404'd
-> False -> the channel stream closed with WS_1008_POLICY_VIOLATION for
EVERY client, so the real-time channel stream was dead. Removed the
function, its call site, and the now-unused httpx + settings imports.
Post-F004 the panel-token gate is the channel-stream authorization (the
CEO panel is the sole WS client and may view every channel), so the
broken loopback is removed rather than replaced with an in-process check
the CEO always passes. The legitimate enforcement.validate_channel_access
(slugs, in-process static ACL) is a different function and is untouched.
F027 is resolved-by-F004 (no code change): all three per-agent streams
gate on _require_panel_token first, so only the authorized CEO panel can
connect — 'any viewer subscribes to any target' is closed.
TDD; ruff/mypy clean; 530 unit/api+enforcement+RBAC tests green.
F064: the bridge forwarder awaited every conn.send_text in a gather with no
per-connection queue and no send timeout — one slow WS client back-pressured
ALL event delivery to ALL clients (head-of-line blocking on the listen loop).
Each connect_* now registers a _ClientConnection (bounded asyncio.Queue(256) +
sender task); broadcasts enqueue via put_nowait (drop + structlog warn on
QueueFull) and return immediately. The sender drains the queue with each send
wrapped in wait_for(SEND_TIMEOUT=10s). Unregistered legacy sockets (set
directly into a subscription set, bypassing connect_*) get a timeout-bounded
fallback send task held in _pending_sends (ruff RUF006). disconnect cancels +
drops the sender.
F065: route handlers caught only WebSocketDisconnect with no finally — a
non-clean exit (anyio closed-resource, CancelledError, transport error)
propagated without manager.disconnect, leaking the dead socket into every
subscription set forever. Added finally: manager.disconnect(websocket) to all
5 handlers (disconnect is idempotent).
F066: no server-side heartbeat/idle timeout — a half-open socket from a dead
container blocked receive_text forever and was never reaped. receive_text now
wraps in wait_for(IDLE_TIMEOUT_SECONDS=90s); on TimeoutError, log + fall
through to the F065 finally. Named module constants (no config.py precedent for
WS tuning; callers/tests patch them).
TDD: 22 new tests across 3 files (handler cleanup, idle timeout, send queue),
non-flaky across repeats; 1 existing test adapted with a yield for the new
async fan-out (assertion unchanged). ruff/mypy clean, 421 unit/api tests pass.
No type:ignore/noqa.
Renn F