Home Assistant Integration Scaffolding

Required File Structure

custom_components/{domain}/
├── __init__.py           # Entry point: async_setup_entry, async_unload_entry
├── manifest.json         # Integration metadata (REQUIRED)
├── config_flow.py        # UI-based configuration (REQUIRED)
├── const.py              # Domain constant, platform list
├── coordinator.py        # DataUpdateCoordinator subclass
├── entity.py             # Base entity class (recommended)
├── strings.json          # Config flow strings
├── services.yaml         # Service action definitions (if registering services)
├── icons.json            # Entity and service icons (optional)
├── translations/
│   └── en.json           # English translations
└── [platform].py         # One per entity platform (sensor.py, switch.py, etc.)