- useVLMScenes(fileUuid): load scenes for a specific file with thumbnails
- useVLMSearch(): search VLM scenes and traces with bilingual support
- useSceneThumbnail(fileUuid, sceneIndex): load scene thumbnail URLs
- TypeScript interfaces: VLMTag, VLMScene, VLMTrace, FileScene
- Uses direct HTTP calls via getApiBase() (no Tauri IPC needed)
- Follows Vue 3 composable best practices (ref, loading, error states)
