# UnifiedWriter v5.46.2 File Menu Command Wiring Fix

This maintenance build fixes File-menu regressions found during real browser testing.

## Fixes

- The Document Properties dialog used an `escapeHtml` helper that was not defined in the runtime scope. A top-level helper is now available for dialogs that are created outside `EditorCore`.
- File menu commands routed through `CommandBus` are now awaited by the UI shell action handler. This keeps async Host OpenFile/SaveFile/Export operations observable and ensures errors are shown through the UnifiedWriter error path instead of failing silently or surfacing only as console stack traces.
- Import / Export continue to be provider-neutral. UnifiedWriter does not add Local Disk / App Storage / Google Drive choices to the product menu. Host callbacks or adapters decide storage and export destinations.
- A small demo fallback remains for DOCX import when no Host OpenFile adapter is present, but this is intentionally kept outside the product storage-provider model.