After a drain loop empties the queue it deletes the key from
FOLLOWUP_QUEUES. If a new message arrives at that moment
enqueueFollowupRun creates a fresh queue object with draining:false
but never starts a drain, leaving the message stranded until the
next run completes and calls finalizeWithFollowup.
Fix: persist the most recent runFollowup callback per queue key in
FOLLOWUP_RUN_CALLBACKS (drain.ts). enqueueFollowupRun now calls
kickFollowupDrainIfIdle after a successful push; if a cached
callback exists and no drain is running it calls scheduleFollowupDrain
to restart immediately. clearSessionQueues cleans up the callback
cache alongside the queue state.
* fix(slack): preserve thread_ts in queue drain and deliveryContext
Two related fixes for Slack thread reply routing:
1. Queue drain drops string thread_ts (#11195)
- `typeof threadId === "number"` in drain.ts only matches Telegram numeric
topic IDs. Slack thread_ts is a string like "1770474140.187459" which
fails the check, causing threadKey to become empty.
- Changed to `threadId != null && threadId !== ""` to accept both number
and string thread IDs.
- Applies to all 3 occurrences in drain.ts: cross-channel detection,
thread key building, and collected originatingThreadId extraction.
2. DM deliveryContext missing thread_ts (#10837)
- updateLastRoute calls for Slack DMs in both prepare.ts and dispatch.ts
built deliveryContext without threadId, so the session's delivery context
never included thread_ts for DM threads.
- Added threadId from threadContext.messageThreadId / ctxPayload.MessageThreadId
to both updateLastRoute call sites.
Tests: 3 new cases in queue.collect-routing.test.ts
- Collects messages with matching string thread_ts (same Slack thread)
- Separates messages with different string thread_ts (different threads)
- Treats empty string threadId same as absent
Closes#10837, closes#11195
* fix(slack): preserve string thread context in queue + DM route updates
---------
Co-authored-by: RobClawd <clawd@RobClawds-Mac-mini.local>
