Aggregates all user-blocking action items into a single composite query:
- waitingForInput: agents paused on questions (oldest first)
- pendingReviewInitiatives: initiatives awaiting content review
- pendingReviewPhases: phases awaiting diff review
- planningInitiatives: active initiatives with all phases pending and no running agents
- blockedPhases: phases in blocked state with optional last-message snippet
Wired into appRouter and covered by 10 unit tests using in-memory Drizzle DB
and an inline MockAgentManager (no real processes required).
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
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