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/sparc/optimizer.md

@@ -0,0 +1,54 @@
+# SPARC Optimizer Mode
+
+## Purpose
+Performance optimization with systematic analysis and improvements.
+
+## Activation
+
+### Option 1: Using MCP Tools (Preferred in Claude Code)
+```javascript
+mcp__claude-flow__sparc_mode {
+  mode: "optimizer",
+  task_description: "optimize application performance",
+  options: {
+    profile: true,
+    benchmark: true
+  }
+}
+```
+
+### Option 2: Using NPX CLI (Fallback when MCP not available)
+```bash
+# Use when running from terminal or MCP tools unavailable
+npx claude-flow sparc run optimizer "optimize application performance"
+
+# For alpha features
+npx claude-flow@alpha sparc run optimizer "optimize application performance"
+```
+
+### Option 3: Local Installation
+```bash
+# If claude-flow is installed locally
+./claude-flow sparc run optimizer "optimize application performance"
+```
+
+## Core Capabilities
+- Performance profiling
+- Code optimization
+- Resource optimization
+- Algorithm improvement
+- Scalability enhancement
+
+## Optimization Areas
+- Execution speed
+- Memory usage
+- Network efficiency
+- Database queries
+- Bundle size
+
+## Systematic Approach
+1. Baseline measurement
+2. Bottleneck identification
+3. Optimization implementation
+4. Impact verification
+5. Continuous monitoring