COMPLETED TASKS:
✅ 06-01: Workout Swap System
- Added swapped_from_id to workout_logs
- Created workout_swaps table for history
- POST /api/workouts/:id/swap endpoint
- GET /api/workouts/available endpoint
- Reversible swaps with audit trail
✅ 06-02: Muscle Group Recovery Tracking
- Created muscle_group_recovery table
- Implemented calculateRecoveryScore() function
- GET /api/recovery/muscle-groups endpoint
- GET /api/recovery/most-recovered endpoint
- Auto-tracking on workout log completion
✅ 06-03: Smart Workout Recommendations
- GET /api/recommendations/smart-workout endpoint
- 7-day workout analysis algorithm
- Recovery-based filtering (>30% threshold)
- Top 3 recommendations with context
- Context-aware reasoning messages
DATABASE CHANGES:
- Added 4 new tables: muscle_group_recovery, workout_swaps, custom_workouts, custom_workout_exercises
- Extended workout_logs with: swapped_from_id, source_type, custom_workout_id, custom_workout_exercise_id
- Created 7 new indexes for performance
IMPLEMENTATION:
- Recovery service with 4 core functions
- 2 new route handlers (recovery, smartRecommendations)
- Updated workouts router with swap endpoints
- Integrated recovery tracking into POST /api/logs
- Full error handling and logging
TESTING:
- Test file created: /backend/test/phase-06-tests.js
- Ready for E2E and staging validation
STATUS: Ready for frontend integration and production review
Branch: feature/06-phase-06
clawd