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/optimization/parallel-execution.md

@@ -0,0 +1,50 @@
+# Parallel Task Execution
+
+## Purpose
+Execute independent subtasks in parallel for maximum efficiency.
+
+## Coordination Strategy
+
+### 1. Task Decomposition
+```
+Tool: mcp__claude-flow__task_orchestrate
+Parameters: {
+  "task": "Build complete REST API with auth, CRUD operations, and tests",
+  "strategy": "parallel",
+  "maxAgents": 8
+}
+```
+
+### 2. Parallel Workflows
+The system automatically:
+- Identifies independent components
+- Assigns specialized agents
+- Executes in parallel where possible
+- Synchronizes at dependency points
+
+### 3. Example Breakdown
+For the REST API task:
+- **Agent 1 (Architect)**: Design API structure
+- **Agent 2-3 (Coders)**: Implement auth & CRUD in parallel
+- **Agent 4 (Tester)**: Write tests as features complete
+- **Agent 5 (Documenter)**: Update docs continuously
+
+## CLI Usage
+```bash
+# Execute parallel tasks via CLI
+npx claude-flow parallel "Build REST API" --max-agents 8
+```
+
+## Performance Gains
+- 🚀 2.8-4.4x faster execution
+- 💪 Optimal CPU utilization
+- 🔄 Automatic load balancing
+- 📈 Linear scalability with agents
+
+## Monitoring
+```
+Tool: mcp__claude-flow__swarm_monitor
+Parameters: {"interval": 1000, "swarmId": "current"}
+```
+
+Watch real-time parallel execution progress!