feat: Add clean:ios script to remove iOS build artifacts

- Removes Xcode build directory, Pods, and derived data
- Cleans generated Capacitor plugins and config files
- Follows same pattern as existing clean scripts
- Resolves missing npm script error

Timestamp: Tue Jul 1 08:21:48 AM UTC 2025

package.json

@@ -30,6 +30,7 @@
     "electron:build:deb": "npm run build:capacitor && npx cap copy electron && cd electron && ./build-packages.sh deb",
     "clean:android": "adb uninstall app.timesafari.app || true",
     "clean:electron": "rm -rf electron/app/* electron/dist/* || true",
+    "clean:ios": "rm -rf ios/App/build ios/App/Pods ios/App/output ios/App/App/public ios/DerivedData ios/capacitor-cordova-ios-plugins ios/App/App/capacitor.config.json ios/App/App/config.xml || true",
     "build:android": "./scripts/build-android.sh",
     "build:electron": "./scripts/build-electron.sh",
     "build:electron:package": "./scripts/build-electron.sh --package",