- New P2 section: Desktop native app with Tauri/Rust - Architecture: Rust shell → spawn Python backend → webview frontend - 6 phases: init, Python sidecar, native features, build, UX, tests - Windows .msi + Linux .AppImage/.deb targets - Auto-update, tray icon, file associations, system theme - Updated effort summary: +1 item, 60-80 jours total