Fixes a room reply visibility gap in the chat rooms hook by correcting the message-resync condition and adding test coverage to reproduce the issue, with updated documentation for the resync contract.
Fusion-Task-Id: FN-3981
- Add useChatRooms hook with room lifecycle state and API integration
- Wire ChatView UI for room selection/creation and update room-focused tests
- Tokenize ChatView and TaskCard color usage to align with dashboard design tokens
- Update architecture docs and include FN-3879 changesets for published CLI package
Fusion-Task-Id: FN-3879