Top-level channel messages from the same sender shared a bare channel
debounce key, causing concurrent messages in different threads to merge
into a single reply on the wrong thread. Now the debounce key includes
the message timestamp for top-level messages, matching how the downstream
session layer already scopes by canonicalThreadId.
Extracted buildSlackDebounceKey() for testability.
Closes#31935
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
* feat: detect stale Slack sockets and auto-restart
Slack Socket Mode connections can silently stop delivering events while
still appearing connected (health checks pass, WebSocket stays open).
This "half-dead socket" problem causes messages to go unanswered.
This commit adds two layers of protection:
1. **Event liveness tracking**: Every inbound Slack event (messages,
reactions, member joins/leaves, channel events, pins) now calls
`setStatus({ lastEventAt, lastInboundAt })` to update the channel
account snapshot with the timestamp of the last received event.
2. **Health monitor stale socket detection**: The channel health monitor
now checks `lastEventAt` against a configurable threshold (default
30 minutes). If a channel has been running longer than the threshold
and hasn't received any events in that window, it is flagged as
unhealthy and automatically restarted — the same way disconnected
or crashed channels are already handled.
The restart reason is logged as "stale-socket" for observability, and
the existing cooldown/rate-limit logic (3 restarts/hour max) prevents
restart storms.
* Slack: gate liveness tracking to accepted events
---------
Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>
* feat(whatsapp): add debounceMs for batching rapid messages
Add a `debounceMs` configuration option to WhatsApp channel settings
that batches rapid consecutive messages from the same sender into a
single response. This prevents triggering separate agent runs for
each message when a user sends multiple short messages in quick
succession (e.g., "Hey!", "how are you?", "I was wondering...").
Changes:
- Add `debounceMs` config to WhatsAppConfig and WhatsAppAccountConfig
- Implement message buffering in `monitorWebInbox` with:
- Map-based buffer keyed by sender (DM) or chat ID (groups)
- Debounce timer that resets on each new message
- Message combination with newline separator
- Single message optimization (no modification if only one message)
- Wire `debounceMs` through account resolution and monitor tuning
- Add UI hints and schema documentation
Usage example:
{
"channels": {
"whatsapp": {
"debounceMs": 5000 // 5 second window
}
}
}
Default behavior: `debounceMs: 0` (disabled by default)
Verified: All existing tests pass (3204 tests), TypeScript compilation
succeeds with no errors.
Implemented with assistance from AI coding tools.
Closes#967
* chore: wip inbound debounce
* fix: debounce inbound messages across channels (#971) (thanks @juanpablodlc)
---------
Co-authored-by: Peter Steinberger <steipete@gmail.com>
