Add Day 4 visibility endpoints and response models, strengthen collaboration/task verification behavior, and patch conversation schema startup migration for agent_state compatibility. Extend backend regression coverage for runtime schemas, verifier behavior, visibility APIs, router auth, and legacy conversation list loading.
Add sub-commander orchestration updates, align frontend integrations, and refine knowledge view behavior without including local data artifacts. Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
