IDLE_TIMEOUT_MS dropped to 30s, a background ticker started, the tab closed. Officer logged the release
thirty seconds later and the job ticked straight through it — the exact point where deleteSession used
to call _claudeKill. Constant reverted.
Also worth writing down: restarting officer does not test this. The process dies outright and
releaseSession never runs, so that only exercises adoptOrphanedSession, which already worked.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Officer's hour-long idle timer was doing two unrelated jobs: collecting its own in-memory binding, which
is its business, and terminating the agent, which is the sidecar's. It could not do the first without
the second, because `unsub` was a closure reachable only through `kill`.
So a browser that went away killed a live agent an hour later — including one the sidecar had
deliberately protected. The sidecar already refuses to collect a session that is mid-turn or holding
background tasks: `task:started` disarms its idle GC, and `armIdle` re-checks and re-arms rather than
firing once. Officer had no view of any of that. A laptop running out of battery overnight took a
`run_in_background` job with it for no reason.
`detach` now sits beside `kill` on both streaming handles, and `_sidecarUnsub` — declared and called for
a long time, never once assigned — is populated at all three sites. `releaseSession` unsubscribes and
forgets the record without killing; the idle timer points at it. `deleteSession` is unchanged, so an
explicit disconnect still ends the session.
The third assignment site was not in the plan: `adoptOrphanedSession` sets `_claudeKill` but nothing
else, so an adopted session that later idled out would have dropped its record while the listener stayed
subscribed — a leak of one per adopt-then-leave.
No double subscription: releasing unsubscribes first, so a returning browser either adopts with a fresh
listener or starts a first turn with none behind it.
Step 1 of docs/chat-session-lifetime.md. Step 2 (a list verb, so running sessions can be found after a
restart) is still open.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Investigation only, no code. The sidecar already protects sessions with background work in flight
(pendingTasks disarms its idle GC); officer's hour-long timer knows nothing about that and kills them
anyway, and does not survive its own restart. Plan is to have officer release its binding instead of
killing, and to add a list verb so running sessions can be found after a restart.
Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
pastilhasandClaude Opus 5