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

backend/agents/README.md

@@ -0,0 +1,66 @@
+# Gravl Agents
+
+AI-agenter för Gravl-projektet.
+
+## Översikt
+
+```
+agents/
+├── coach/          # 🏋️ Träningscoach
+│   ├── SOUL.md
+│   ├── exercises.json
+│   └── programs/
+│       ├── beginner.json
+│       ├── strength.json
+│       └── hypertrophy.json
+│
+├── architect/      # 🏗️ Systemarkitekt
+│   └── SOUL.md
+│
+├── frontend-dev/   # ⚛️ React/Frontend
+│   └── SOUL.md
+│
+├── backend-dev/    # 🖥️ Node.js/API
+│   └── SOUL.md
+│
+└── reviewer/       # 🔍 Code Review
+    └── SOUL.md
+```
+
+## Användning
+
+### Via OpenClaw
+
+```bash
+# Spawn coach för träningsfrågor
+sessions_spawn --agentId="coach" --task="Skapa 4-dagars hypertrofiprogram för intermediate"
+
+# Spawn för kod-tasks
+sessions_spawn --agentId="backend-dev" --task="Lägg till endpoint för att radera mätning"
+```
+
+### Som kontext
+
+Läs relevant SOUL.md för att "bli" den agenten:
+
+```
+Läs /workspace/gravl/agents/coach/SOUL.md och agera som Coach.
+Användaren vill ha ett styrkeprogram för 3 dagar/vecka.
+```
+
+## Agent-specifika resurser
+
+### Coach
+- `exercises.json` - 20+ övningar med alternativ, cues, vanliga misstag
+- `programs/` - Färdiga programmallar för olika mål
+
+### Dev-agenter
+- Gravl-specifika konventioner
+- Stack: React + Vite, Node + Express, PostgreSQL, Docker
+
+## Lägga till ny agent
+
+1. Skapa mapp: `agents/<namn>/`
+2. Skapa `SOUL.md` med persona och riktlinjer
+3. Lägg till resursfiler om relevant
+4. Uppdatera denna README