- Introduced WS_Message_V3 standardized Pydantic model and WS_Manager_V3.
- Implemented /v3/ws/ endpoint with granular Redis routing to solve "noisy neighbor" scaling issues.
- Added presence tracking using Redis Sets for group coordination.
- Comprehensive test suite added (unit and integration) covering models, manager, and routing logic.
- Documentation: Created V3 Frontend WebSocket Guide and Project design spec.
- Updated main Frontend API guide and tests README with new standards.
- Overhauled README.md to serve as a unified system index and WIP tracker.
- Standardized documentation filenames (ARCH__, GUIDE__, PLAN__) for better discoverability.
- Archived completed project plans and scopes.
- Fixed regressions in unit tests (errors, models, email) caused by V3 architectural updates.
- Ensured unit tests remain non-destructive and environment-independent via mocking.
