* 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
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Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>
* fix: make replyToMode 'off' actually prevent threading in Slack
Three independent bugs caused Slack replies to always create threads
even when replyToMode was set to 'off':
1. Typing indicator created threads via statusThreadTs fallback (#16868)
- resolveSlackThreadTargets fell back to messageTs for statusThreadTs
- 'is typing...' was posted as thread reply, creating a thread
- Fix: remove messageTs fallback, let statusThreadTs be undefined
2. [[reply_to_current]] tags bypassed replyToMode entirely (#16080)
- Slack dock had allowExplicitReplyTagsWhenOff: true
- Reply tags from system prompt always threaded regardless of config
- Fix: set allowExplicitReplyTagsWhenOff to false for Slack
3. Contradictory replyToMode defaults in codebase (#20827)
- monitor/provider.ts defaulted to 'all'
- accounts.ts defaulted to 'off' (matching docs)
- Fix: align provider.ts default to 'off' per documentation
Fixes: openclaw/openclaw#16868, openclaw/openclaw#16080, openclaw/openclaw#20827
* fix(slack): respect replyToMode in DMs even with typing indicator thread
When replyToMode is 'off' in DMs, replies should stay in the main
conversation even when the typing indicator creates a thread context.
Previously, when incomingThreadTs was set (from the typing indicator's
thread), replyToMode was forced to 'all', causing all replies to go
into the thread.
Now, for direct messages, the user's configured replyToMode is always
respected. For channels/groups, the existing behavior is preserved
(stay in thread if already in one).
This fix:
- Keeps the typing indicator working (statusThreadTs fallback preserved)
- Prevents DM replies from being forced into threads
- Maintains channel thread continuity
Fixes#16868
* refactor(slack): eliminate redundant resolveSlackThreadContext call
- Add isThreadReply to resolveSlackThreadTargets return value
- Remove duplicate call in dispatch.ts
- Addresses greptile review feedback with cleaner DRY approach
* docs(slack): add JSDoc to resolveSlackThreadTargets
Document return values including isThreadReply distinction between
genuine user thread replies vs bot status message thread context.
* docs(changelog): record Slack replyToMode off threading fixes
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Co-authored-by: James <jamesrp13@gmail.com>
Co-authored-by: theoseo <suhong.seo@gmail.com>
