- Enhanced the `merge_column_backed_and_eav_metrics` function to ensure that when both legacy columns and EAV values are present, the legacy column takes precedence.
- Revised documentation in `ACTIVITY_PRODUCTION_ARCHITECTURE_AND_PHASES.md` and `ACTIVITY_SCALAR_KANON_TABLE.md` to reflect the new reading logic and clarify the handling of metrics.
- Updated the `activity_data_canon.py` to specify the new merge behavior, ensuring consistency in data retrieval.
- Added unit tests to validate the new logic, confirming that legacy columns are preferred when available.
- Added new updates for Phase A and Phase B in `CLAUDE.md`, detailing the completion of Phase A and the introduction of enriched session metrics in the API response for `GET /api/activity`.
- Enhanced the README to include references to new documentation files for scalar canon and composite metrics implementation.
- Updated `ACTIVITY_PRODUCTION_ARCHITECTURE_AND_PHASES.md` to reflect the current status of phases and added navigation rules for data access.
- Improved `ACTIVITY_SESSION_METRICS_EAV_AGENT_GUIDE.md` with links to new implementation concepts for composite metrics.
- Refactored the activity router to integrate enriched session metrics into the activity list responses, ensuring a more comprehensive data presentation.
