feat: Phase O Windows-native integration + settings search

- Taskbar progress bar: renderer pushes summarizeQueue aggregate over a new
  taskbar:progress channel (App store subscription); setProgressBar normal/error
- System tray (src/main/tray.ts) + minimize-to-tray (Settings.minimizeToTray);
  close hides to tray, isQuitting guards real exits; icon via getAppIconPath()
  (build/icon.ico added to extraResources)
- Jump list: app.setUserTasks "Open AeroFetch" (thumbnail toolbar deferred)
- Settings search: filters the ~11 SettingsView cards live by text match

Overlay badge deferred (needs a drawn NativeImage). typecheck + test (192) +
build all clean. Roadmap: Phase O COMPLETE.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

electron-builder.yml

@@ -30,6 +30,10 @@ extraResources:
     to: bin
     filter:
       - '**/*'
+  # The app icon, copied so the runtime (system tray) can load it at
+  # <resources>/icon.ico — build/ itself isn't bundled into the app.
+  - from: build/icon.ico
+    to: icon.ico
 
 win:
   # Two artifacts: