opensearch/{index}/
├── bsentity/, bsbhv/    # Base classes (DO NOT EDIT)
├── exentity/, exbhv/    # Extended classes (customize here)
└── cbean/               # Condition beans (query builders)
```

### Form Classes
- POJOs with public fields (no getters/setters)
- Validation: `@Required`, `@Size`, `@ValidateTypeFailure`, `@Pattern`
- Include `crudMode` field for CRUD operations

## Security and Authentication