Each retry in the SetOutboxWatermark loop now gets its own 5s context.
Previously a shared context could already be expired when the second or
third attempt ran, making the retries pointless.
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
Fixes#1691
- pollOutbox() reused a 10s context for SetOutboxWatermark after event
processing could take much longer, causing "outbox watermark write
failed: context deadline exceeded". The watermark never advanced so
the same 200 events were reprocessed every poll cycle, spiking CPU.
Now uses an independent 5s context with up to 3 retries (200ms apart).
- When multiple Codex accounts sharing the same 21-22 groups are all
rate-limited in quick succession, each account_changed event triggered
redundant bucket rebuild attempts for the same groups. Introduce
batchSeenKey{groupID, platform} and thread a seen map through the
handler chain; rebuildBucketsForPlatform skips (group, platform) pairs
already rebuilt within the same poll batch (~80% fewer rebuild calls in
the 5-accounts-same-groups scenario).
Co-Authored-By: Claude Sonnet 4.6 (1M context) <noreply@anthropic.com>
