Add About screen with 7-tap joelangel easter egg; fix deps

- About screen surfaces getAbout() content; tapping the title 7x reveals
  assets/joelangel.png (placeholder committed; replace with the real image)
- Correct UnifiedPush package to react-native-unifiedpush-connector (lazy-required)
- Fix expo-notifications NotificationBehavior (shouldShowAlert)
- Reachable via an ⓘ header button on the main tabs

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

app/package.json

@@ -7,7 +7,8 @@
     "start": "expo start --dev-client",
     "android": "expo run:android",
     "prebuild": "expo prebuild --platform android --clean",
-    "typecheck": "tsc --noEmit"
+    "typecheck": "tsc --noEmit",
+    "ios": "expo run:ios"
   },
   "dependencies": {
     "parksmarter-client": "*",
@@ -27,7 +28,7 @@
     "@react-native-async-storage/async-storage": "1.23.1",
     "@maplibre/maplibre-react-native": "^10.0.0",
     "react-native-vision-camera": "^4.6.0",
-    "react-native-unifiedpush": "^2.0.0",
+    "react-native-unifiedpush-connector": "^0.4.0",
     "react": "19.0.0",
     "react-native": "0.79.0"
   },