# UnifiedFiler Product v1.0.0 Release Notes

UnifiedFiler Product v1.0.0 is the initial product release of the Host-embedded File Operation Control Framework.

This product release is based on the internal development milestone `dev-2.1.0`. Historical documents named `VERSION_1_9_*`, `VERSION_2_0_*`, and `VERSION_2_1_*` describe development milestones and are retained as implementation history.

## Included functional areas

- FileExplorer UI
- FilePicker and FileSaver dialogs
- Control architecture for Host integration
- CommandRegistry / StateStore / EventBus / SelectionModel / ClipboardModel
- CreateTypeRegistry for Host-defined New/Create types
- PreviewProviderRegistry for Host-defined previews
- AppStorage / IndexedDB adapter
- This Device / LocalDisk attach-folder adapter
- Google Drive frontend-only adapter using Google Identity Services and Drive API v3
- Backend API adapter and Backend API Contract v1.0
- SecurityPolicyService
- Metadata display/editing UI
- Permission / Capability UI
- HostApplicationBridgeService for Host app integration
- Node.js and PHP backend samples
- RegressionTestService and public API contract inspection

## Public version fields

```javascript
UnifiedFiler.version              // '1.0.0'
UnifiedFiler.productVersion       // '1.0.0'
UnifiedFiler.developmentVersion   // 'dev-2.1.0'
UnifiedFiler.apiVersion           // '1.0'
UnifiedFiler.contractVersion      // '1.0'
UnifiedFiler.buildVersion         // '20260610.001'
```

## Release status

This package is a stable product release candidate suitable for Host integration and acceptance testing. Google Drive OAuth and Shared Drive workflows still require validation in the Host's real Google Cloud/OAuth environment.


## Documentation update build 20260610.002

Added `docs/HOST_SIDE_INTEGRATION_SPEC.md` as the Host-side implementation specification for product v1.0.0. Product/API compatibility remains unchanged.