Implement asynchronous memory consolidation that runs in the background when
sessions are idle, instead of blocking user interactions after each message.
Changes:
- MemoryConsolidator: Add background task management with idle detection
* Track session activity timestamps
* Background loop checks idle sessions every 30s
* Consolidation triggers only when session idle > 60s
- AgentLoop: Integrate background task lifecycle
* Start consolidation task when loop starts
* Stop gracefully on shutdown
* Record activity on each message
- Refactor maybe_consolidate_by_tokens: Keep sync API but schedule async
- Add debug logging for consolidation completion
Benefits:
- Non-blocking: Users no longer wait for consolidation after responses
- Efficient: Only consolidate idle sessions, avoiding redundant work
- Scalable: Background task can process multiple sessions efficiently
- Backward compatible: Existing API unchanged
Tests: 11 new tests covering background task lifecycle, idle detection,
scheduling, and error handling. All passing.
🤖 Generated with Claude Code
Tony