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An armed iOS Live Activity only receives deliveries when an environment publishes or the app re-registers its token. A card left showing Done or Failed rows kept them past the 15 minute window when no follow-up event arrived, so the Dynamic Island read "T3 Done" for hours. The 5 minute cron now lists armed cards whose last delivered content had no live work and that have received nothing since the display window, then replays their aggregate. The replay is silent and ends the card once nothing is left to show.
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| .where( | ||
| and( | ||
| isNotNull(relayLiveActivities.activityPushToken), | ||
| sql`coalesce(${relayLiveActivities.lastAggregateJson} ->> 'activeCount', '0') = '0'`, |
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🟠 High agentActivity/LiveActivities.ts:287
The idle query can end a newly active live-activity card and clear its token. listIdleArmedTargets only snapshots activeCount = 0; a new agent state can be persisted before the queued null-aggregate end reaches ApnsDeliveries.sendLiveActivity, and that end has no state-current check, so it can run after the new update. Recheck or atomically claim the no-live-work state at end-delivery time, or serialize this transition.
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In file @infra/relay/src/agentActivity/LiveActivities.ts around line 287:
The idle query can end a newly active live-activity card and clear its token. `listIdleArmedTargets` only snapshots `activeCount = 0`; a new agent state can be persisted before the queued null-aggregate end reaches `ApnsDeliveries.sendLiveActivity`, and that end has no state-current check, so it can run after the new update. Recheck or atomically claim the no-live-work state at end-delivery time, or serialize this transition.
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Confirmed. A contentless end job had no state recheck, so it could land after the update for work that started in between and retire the new card's token. Fixed in 90e552a: the queue consumer now skips a null-aggregate end when the user has live work again, the same recheck start jobs use, and completes the job as stale. Covered by a new ApnsDeliveries test.
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ApprovabilityVerdict: Not approved Macroscope's review found this PR not approvable — This PR adds a five-minute production cleanup workflow that queries persisted activity state and silently ends customer-visible Live Activities through the APNs delivery path. The cross-component lifecycle change has an unresolved race around new activity starting after the idle scan, so its concurrency and termination semantics need human review. Not approved because:
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| replayForTarget({ | ||
| userId: target.user_id, | ||
| deviceId: target.device_id, | ||
| endOnly: true, | ||
| }).pipe( |
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When new work is published after replayForTarget sees an empty aggregate but before its queued APNs end job is consumed, that end still matches the same activity token. processSignedJob only validates current rows for non-null aggregates (ApnsDeliveries.ts lines 756–769), so it sends the stale end, clears the token, and drops the Live Activity even though a newer update represented active work. Recheck that no displayable work exists when consuming this cron-generated end, or attach a generation to prevent the stale end from being sent.
AGENTS.md reference: AGENTS.md:L74-L74
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Confirmed. A contentless end job had no state recheck, so it could land after the update for work that started in between and retire the new card's token. Fixed in 90e552a: the queue consumer now skips a null-aggregate end when the user has live work again, the same recheck start jobs use, and completes the job as stale. Covered by a new ApnsDeliveries test.
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No actionable comments were generated in the recent review. 🎉 ℹ️ Recent review info⚙️ Run configurationConfiguration used: Path: .coderabbit.yaml Review profile: CHILL Plan: Advanced Run ID: 📒 Files selected for processing (3)
Included review availability: Your plan provides up to 10 included reviews per hour; 8 remain after this review. 📝 WalkthroughWalkthroughThe relay now finds stale idle Live Activity targets, avoids repainting cards when work becomes active, and sends end replays after the display window expires. The prune cron runs this process every five minutes. ChangesIdle Live Activity termination
Priority: ⬇️ Low Estimated code review effort: 3 (Moderate) | ~25 minutes Change: Bug fix · Severity of issue fixed: Low Sequence Diagram(s)sequenceDiagram
participant PruneCron
participant AgentActivityPublisher
participant LiveActivities
participant ApnsDeliveries
PruneCron->>AgentActivityPublisher: endIdleLiveActivities(nowMs)
AgentActivityPublisher->>LiveActivities: listIdleArmedTargets(deliveredBefore)
LiveActivities-->>AgentActivityPublisher: stale idle targets
AgentActivityPublisher->>ApnsDeliveries: send end-only replay
ApnsDeliveries-->>AgentActivityPublisher: end or skip stale replay
Suggested reviewers: Merge Risk: 🟡 Moderate · up to A returning activity can be ended by a previously queued cleanup delivery, potentially suppressing the new Live Activity. Resolve the delivery race before merge. 🚥 Pre-merge checks | ✅ 4 | ❌ 1❌ Failed checks (1 warning)
✅ Passed checks (4 passed)
✨ Finishing Touches🧪 Generate unit tests (beta)
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Inline comments:
In `@infra/relay/src/agentActivity/AgentActivityPublisher.ts`:
- Around line 170-200: Update endIdleLiveActivities and replayForTarget to fence
idle end replays against newer publishes for the same device, using per-device
delivery serialization or an atomic version check immediately before enqueueing
live_activity_end. Ensure a replay discovered before a newer publish cannot
enqueue an end for the same activity token after that publish’s update; preserve
normal publish behavior.
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📒 Files selected for processing (8)
infra/relay/src/agentActivity/AgentActivityPublisher.test.tsinfra/relay/src/agentActivity/AgentActivityPublisher.tsinfra/relay/src/agentActivity/FcmDeliveries.test.tsinfra/relay/src/agentActivity/LiveActivities.test.tsinfra/relay/src/agentActivity/LiveActivities.tsinfra/relay/src/agentActivity/MobileRegistrations.test.tsinfra/relay/src/http/Api.tsinfra/relay/src/worker.ts
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What Changed
The relay's 5 minute cron now ends armed iOS Live Activities that are only showing finished work once the 15 minute display window has passed.
LiveActivities.listIdleArmedTargetsselects cards with a live update token whose last delivered aggregate had no active agents (or never arrived) and that received nothing since the cutoff.AgentActivityPublisher.endIdleLiveActivitiesreplays the current aggregate to each of them. The replay is silent, and a null aggregate becomes the existinglive_activity_enddelivery.replayForTargethelper.Why
Fixes #11939.
A card only gets a delivery when an environment publishes or the app re-registers its token.
makeAggregateStatedrops Done rows after 15 minutes, but nothing recomputed it for a user with no further agent activity, so the Dynamic Island said "T3 Done" for hours. Opening the app inside the window re-sent the same Done card. The cron already pruned the terminal rows; it now also ends the cards that showed them.UI Changes
None in the app. The Done card now disappears within about 5 minutes after its 15 minute window instead of lingering.
Checklist
Made with Claude Fable 5.1 in T3 Code through the Claude Code harness.
Summary by CodeRabbit
New Features
Bug Fixes