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/helpers/statusline-hook.sh

@@ -0,0 +1,21 @@
+# Claude Flow V3 Statusline Hook
+# Add to your shell RC file (.bashrc, .zshrc, etc.)
+
+# Function to get statusline
+claude_flow_statusline() {
+  local statusline_script="${CLAUDE_FLOW_DIR:-.claude}/helpers/statusline.cjs"
+  if [ -f "$statusline_script" ]; then
+    node "$statusline_script" 2>/dev/null || echo ""
+  fi
+}
+
+# For bash PS1
+# export PS1='$(claude_flow_statusline) \n\$ '
+
+# For zsh RPROMPT
+# export RPROMPT='$(claude_flow_statusline)'
+
+# For starship (add to starship.toml)
+# [custom.claude_flow]
+# command = "node .claude/helpers/statusline.cjs 2>/dev/null"
+# when = "test -f .claude/helpers/statusline.cjs"