## 2. GarminSync Service

### Feature Name: IntialSpecV2

### Purpose
Manage synchronization with Garmin Connect and other fitness platforms

### Core Requirements
- **Platform Integration**
  - Garmin Connect OAuth2 authentication
  - Activity download (FIT.GPX/TCX files) stored in CentralDB
  - Health metrics synchronization
  - Workout upload to Garmin
  - Fitbit weight data sync (future)
  - this is a single user app
  - default listen port 8001
  - configuration should accept yaml or environment vars
  - 

- **API Endpoints**
  - `POST /api/sync/garmin/activities` - Trigger activity sync
  - `GET /api/sync/status` - Check sync status

- **Technical**
  - Background job processing
  - Rate limiting for API calls
  - Error handling and retry logic
  - Sync history and conflict resolution (using CentralDB database)

- **Existing Code**
  - Use @GarminAnalyser.md to pull code from the existing implementation. This is a working version, reuse as much as possible.
  - Use CentralDB for storage (incl. refresh tokens etc)
  - CentralDB API is in @DB_API_SPEC.json - you cna refresh the spec at curl http://localhost:8000/openapi.json