Backend:
- Created migration 006_training_planning.sql
- training_units table (planned vs actual, status, notes)
- training_unit_exercises M:N (order, duration, modifications)
- Created routers/training_planning.py with full CRUD
- List with filters (group, date range, status)
- Get detail with exercises
- Create/Update/Delete with access control
- Quick create endpoint (auto-fills from group defaults)
- Permission: trainer for own groups, admin for all
- Registered training_planning router in main.py
Frontend:
- Complete TrainingPlanningPage with full planning workflow
- Group selector + date range picker
- List view with status badges (planned/completed/cancelled)
- Create/Edit modal with exercise management
- Drag to reorder exercises (▲▼)
- Quick create button (one-click with group defaults)
- Durchführung section (actual date/time, attendance, status)
- Public notes + trainer-only notes
- Updated api.js with deleteTrainingUnit and quickCreateTrainingUnit
- Added /planning route to App.jsx
- Navigation already configured (Calendar icon)
This is the CORE feature - trainers can now plan and document training sessions.
Next: Admin routes, role system refinement, testing
