6.9.0 (2026-05-22) Features add onAgentCreated to AgentManagerObserver (e2f1c12) Documentation mark D2 done, update field counts in architecture.md (#114) (702caf4) plan narrow AgentToolDeps and AgentMenuDeps (#114) (0f7e953) retro: add retro notes for issue #113 (6b3c280)