# Feature Flag Strategy

Feature flags prevent future modules from appearing as broken V1 features.

## Required Flags
- `ENABLE_GRB_CONNECTOR`
- `ENABLE_OSM_CONNECTOR`
- `ENABLE_SENTINEL_LAB`
- `ENABLE_SAM_SEGMENTATION`
- `ENABLE_YOLO_DETECTION`
- `ENABLE_LIDAR_LAB`
- `ENABLE_TRAINING_STUDIO`
- `ENABLE_QGIS_EXPORT`

## V1 Defaults
```env
ENABLE_GRB_CONNECTOR=true
ENABLE_OSM_CONNECTOR=true
ENABLE_SENTINEL_LAB=false
ENABLE_SAM_SEGMENTATION=false
ENABLE_YOLO_DETECTION=true
ENABLE_LIDAR_LAB=false
ENABLE_TRAINING_STUDIO=false
ENABLE_QGIS_EXPORT=false
```

## UI Behavior
Disabled features may be visible as roadmap cards, but must not look like broken tools. They should show:
- why disabled;
- what dependency is missing;
- which milestone enables them.

## Backend Behavior
Disabled endpoints return a typed `FEATURE_DISABLED` error, not 404 and not silent success.