When a cron fires, the scheduler now fetches the last 10 messages from
the workspace's Slack channel via conversations.history and prepends them
to the cron prompt as '[Slack channel context — recent team messages]'.
This gives each agent ambient awareness of what peers are doing:
- Backend sees Frontend posted 'PR #840 ready for review' → can check
- Security Auditor sees Backend posted 'new endpoint added' → plans review
- PM sees all engineering activity → better synthesis in rollup
Implementation:
- slack.go: FetchChannelHistory() calls conversations.history, filters
bot's own messages, returns last N as SlackHistoryMessage structs
- manager.go: FetchWorkspaceChannelContext() looks up the workspace's
Slack config, fetches history, formats as readable context block
- scheduler.go: ChannelBroadcaster interface extended with
FetchWorkspaceChannelContext; fireSchedule injects context before
the cron prompt (prepended, not appended, so the agent sees team
context BEFORE its task instructions)
Best-effort: if Slack API fails or workspace has no channels, the
prompt is unchanged. Truncated to 200 chars per message, 10 messages
max to keep prompt overhead bounded.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
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