Desktop: every write shows a styled in-app dry-run preview (command, changed rows) before the native confirm dialog; i18n house style fix for the developer id hint

apps/desktop/src/App.tsx

@@ -1,5 +1,6 @@
 // Shell: sidebar (studios, collapsible, with their apps; the workspace), top bar (breadcrumbs, last read, refresh),
 // the screen, the command palette (Cmd/Ctrl+K), toasts and the first-run welcome guide.
+import { DryRunPreview } from './ui/DryRunPreview';
 import { useCallback, useEffect, useMemo, useState } from 'react';
 import { FIXTURES, onDeepLink, onDeepLinkFolder, onTrayRoute } from './api';
 import { devSwitch } from './dev/switches';
@@ -282,6 +283,7 @@ export function App({ onTheme }: { onTheme: () => void }) {
       {palette && <ErrorBoundary where="palette"><Palette commands={commands} onClose={() => setPalette(false)} /></ErrorBoundary>}
       {welcome && <ErrorBoundary where="welcome"><Onboarding onClose={closeWelcome} /></ErrorBoundary>}
       <ErrorBoundary where="toasts"><Toasts /></ErrorBoundary>
+      <ErrorBoundary where="preview"><DryRunPreview /></ErrorBoundary>
     </NavCtx.Provider>
   );
 }