Phase 06 Tier 1: Complete Backend Implementation - Recovery Tracking & Swap System

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

.claude/commands/analysis/token-efficiency.md

@@ -0,0 +1,45 @@
+# Token Usage Optimization
+
+## Purpose
+Reduce token consumption while maintaining quality through intelligent coordination.
+
+## Optimization Strategies
+
+### 1. Smart Caching
+- Search results cached for 5 minutes
+- File content cached during session
+- Pattern recognition reduces redundant searches
+
+### 2. Efficient Coordination
+- Agents share context automatically
+- Avoid duplicate file reads
+- Batch related operations
+
+### 3. Measurement & Tracking
+
+```bash
+# Check token savings after session
+Tool: mcp__claude-flow__token_usage
+Parameters: {"operation": "session", "timeframe": "24h"}
+
+# Result shows:
+{
+  "metrics": {
+    "tokensSaved": 15420,
+    "operations": 45,
+    "efficiency": "343 tokens/operation"
+  }
+}
+```
+
+## Best Practices
+1. **Use Task tool** for complex searches
+2. **Enable caching** in pre-search hooks
+3. **Batch operations** when possible
+4. **Review session summaries** for insights
+
+## Token Reduction Results
+- 📉 32.3% average token reduction
+- 🎯 More focused operations
+- 🔄 Intelligent result reuse
+- 📊 Cumulative improvements