[Desktop][Windows] UI renders blank "Not found" error on startup after updating to v0.5.22

### Describe the bug
After updating the desktop client to release `desktop-v0.5.22` on Windows 11, the application window launches successfully, but the main interface fails to render any content and only displays the error text:
> "ERR_FILE_NOT_FOUND"

The app becomes completely unusable. Downgrading back to `desktop-v0.5.20` immediately resolves the issue and the interface loads normally.

### Steps to Reproduce
1. Install or update to `desktop-v0.5.22` on Windows 11 (`Buzz_0.5.22_x64-setup_alpha-unsigned.exe`).
2. Launch the desktop application.
3. Observe the window frame opens, but the internal canvas/view shows `"Not found"`.

### Expected Behavior
The client should connect/load the community view, channels, and local cache as it does in version `0.5.20`.

### Environment & Details
- **App Version:** `desktop-v0.5.22` (Regression; works on `desktop-v0.5.20`)
- **OS:** Windows 11 (x86_64)
- **Installation method:** Installer / Executable release asset

### Additional Context / Logs
- No local UI navigation or reconnect prompt appears, suggesting an internal asset/routing resolution failure (e.g., frontend routing / Tauri webview index load failure) or an unhandled local state migration error between versions.