# Phase 6: Backend Service Updates

## Agent Assignment
**Primary Agent:** backend-agent
**Duration:** 20 minutes

## Prerequisites
- Phase 2 (Remove Tenant) must be complete

## Objectives
1. Update database connection strings to use mvp-postgres
2. Update Redis connection strings to use mvp-redis
3. Update platform client URL to use mvp-platform
4. Remove API key authentication for platform service

## Step-by-Step Instructions

### Step 1: Update Config Loader
Modify `backend/src/core/config/config-loader.ts`:

```typescript
// Update database URL
const DATABASE_URL = process.env.DATABASE_URL ||
  'postgresql://postgres:password@mvp-postgres:5432/motovaultpro';

// Update Redis URL
const REDIS_URL = process.env.REDIS_URL ||
  'redis://mvp-redis:6379';
```

### Step 2: Update Platform Client
Modify `backend/src/features/vehicles/external/platform-vehicles/platform-vehicles.client.ts`:

```typescript
// Update base URL
private baseURL = process.env.PLATFORM_VEHICLES_API_URL ||
  'http://mvp-platform:8000';

// REMOVE API key authentication (same network, no auth needed)
// DELETE:
// headers: { 'X-API-Key': this.apiKey }
```

### Step 3: Verify No Old Container Names
```bash
grep -r "admin-postgres" backend/src/
grep -r "admin-redis" backend/src/
grep -r "admin-backend" backend/src/
# Expected: 0 results for all
```

### Step 4: Rebuild and Test
```bash
cd backend
npm run build
docker compose restart mvp-backend

# Test platform connectivity
docker compose exec mvp-backend curl http://mvp-platform:8000/health
# Expected: 200 OK
```

## Validation Criteria
- [ ] All database URLs use mvp-postgres
- [ ] All Redis URLs use mvp-redis
- [ ] Platform client uses mvp-platform
- [ ] No API key for platform service
- [ ] Backend builds successfully
- [ ] Backend starts without errors

## Update EXECUTION-STATE.json
```json
{
  "phases": {"6": {"status": "completed", "validation_passed": true}}
}
```