- Bumped APP_VERSION to 0.8.134 and updated the changelog to reflect recent changes.
- Continued Frontend Phase 4 with the introduction of the `frontend/src/api/planning.js` module for training planning.
- Updated architecture documentation to include details on the new `planning.js` API and its integration with the existing client structure.
- Enhanced `utils/api.js` to re-export the new planning module, streamlining API access.
