The #5917 reorder (idle busy/stream reset moved before the visit-ack) shifted
code positions, so two pre-existing fixed-offset source-assertion tests
truncated: extend gateway_sse_reconnect_dedupe's loadSession _block end-anchor to
_mergePendingSessionMessage, and widen stale_stream_cleanup's 900->1400 char
window past the expanded comment. Behavior unchanged.
A visible tab can permanently miss a server-initiated turn (self-wake /
cron / restart hook) when its per-session SSE is momentarily down at the
emit instant. server_turn_started is a fire-and-forget broadcast with no
replay buffer; if the turn also finishes before the tab reconnects, the
on-subscribe self-heal finds no live run in ACTIVE_RUNS and replays
nothing, so the transcript stays stale until a hard refresh.
Extend the self-heal: the (re)subscribing tab reports its last-known
message_count (?known_count); when there is no live run to replay, the
handler compares the persisted count and, if the server is ahead, emits a
lightweight session-updated frame. The frontend syncs incrementally via
the #5189 keepStaleUntilLoaded swap-in-place loadSession path (no
clear+refetch, so the #5177/#5189 blank-gap jump is not reintroduced).
Idle-only and pane-scoped; emits only when the server is strictly ahead.
* stage-3629: scope gateway watcher to active profile (profile-keyed registry), rebased onto master
* stage-3629: + stop-race-safe subscribe() (Codex CORE) + regression test
Codex caught a TOCTOU between get_watcher() and subscribe(): a watcher reaped as
subscriber-free during a concurrent profile switch left a late subscriber's queue
without the None sentinel -> SSE loop hangs open (keepalives, no events). Opus
independently found the same race (rated follow-up). subscribe() now checks
_stop_event under _sub_lock after appending and self-enqueues the sentinel.
test_subscribe_after_stop_gets_sentinel_immediately pins it.
* stage-3629: + reconnect gateway SSE to new profile on switch (Codex CORE #2)
Second Codex finding: after a profile switch this tab's _gatewaySSE stayed
subscribed to the PREVIOUS profile's watcher (switchToProfile never restarted it;
the probe reattach is gated on !_gatewaySSE which is false while the old ES is
open). switchToProfile() now calls startGatewaySSE() after S.activeProfile is set
— it closes the old ES + reconnects with the new profile cookie, self-gating on
_showCliSessions.
* Release PF: scope gateway watcher to active profile (#2848)
rodboev's #3629, re-pushed to fix both bounce findings (client SSE reconnect +
singleton→profile-keyed registry). Two Codex CORE races caught + fixed inline:
(1) stop/subscribe sentinel race, (2) tab's own SSE staying on the old profile
after switch. Codex SAFE + Opus SHIP (architecture) + gateway-watcher tests green.
Co-authored-by: rodboev <rodboev@users.noreply.github.com>
---------
Co-authored-by: nesquena-hermes <agent@nesquena-hermes>
Co-authored-by: rodboev <rodboev@users.noreply.github.com>
Shift from backend mtime-based detection to frontend SSE deduplication.
Backend: Revert gateway_watcher.py to original pure hash-based polling.
Remove _get_db_mtime, _detect_gateway_restart, and mtime tracking.
This is a no-op in behavior — the original was already hash-only.
Frontend: Add deduplication at the SSE event handler level.
- _gatewaySessionSnapshotKey(sessions): deterministic key from
session_id + updated_at + message_count (same fields as backend hash)
- _isGatewaySessionForSnapshot(session): classify non-webui sessions
- _isDuplicateGatewaySessionSnapshot(sessions): compare SSE payload
against current _allSessions, filtered to gateway subset
- SSE sessions_changed handler wraps renderSessionList() in dedupe:
identical data → skip refresh
This directly addresses the real root cause: the SSE reconnect snapshot
(routes.py:7735) unconditionally pushes an initial snapshot, and the
frontend always re-renders. After this fix, a reconnect with unchanged
session data is correctly detected and the redundant redraw is skipped.
Previously submitted as #3259 (backend mtime approach, now closed per
maintainer review).
