fix(desktop): launch server with unrestricted root (#283)

## Summary
- launch the Electron-managed server with `--unrestricted-root` by
default
- launch the Tauri-managed server with `--unrestricted-root` by default
- stop relying on the server's `process.cwd()` fallback for desktop
filesystem browsing

--
Yours,
[CodeNomadBot](https://github.com/NeuralNomadsAI/CodeNomad)

Co-authored-by: Shantur Rathore <i@shantur.com>

packages/tauri-app/src-tauri/src/cli_manager.rs

@@ -963,6 +963,7 @@ impl CliEntry {
             "--auth-cookie-name".to_string(),
             auth_cookie_name.to_string(),
             "--generate-token".to_string(),
+            "--unrestricted-root".to_string(),
         ];
 
         if dev {