- Removed outdated visualization demo route and fixed demo layout in the frontend.
- Updated widget registration logic in `frontend/src/widgetSystem/registerDashboardWidgets.js` to ensure proper integration of core widgets.
- Adjusted documentation in `.claude/docs/technical/DASHBOARD_WIDGETS_AGENT_GUIDE.md` and comments in `backend/widget_catalog.py` to reflect changes.
- Added new dashboard widgets for activity and body overview, enhancing user experience and data visualization capabilities.
- Bumped application version to reflect these changes.