chore(native): require iOS 17

Raise ios.deploymentTarget from 16.4 to 17.0 (app and widget extension) and state the requirement in the mobile app docs.

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

apps/native/app.json

@@ -10,7 +10,7 @@
       "config": {
         "usesNonExemptEncryption": false
       },
-      "deploymentTarget": "16.4",
+      "deploymentTarget": "17.0",
       "icon": "./assets/images/sofa.icon",
       "bundleIdentifier": "com.jakejarvis.sofa",
       "appleTeamId": "B5ZWKBCUTU",

docs/content/docs/mobile-app.mdx

@@ -89,7 +89,7 @@ export const GooglePlayBadge = (props) => (
   </svg>
 );
 
-Sofa has a native mobile app for iOS and Android built with [Expo](https://expo.dev/) and React Native. It connects to your self-hosted Sofa server and provides the same core features as the web app.
+Sofa has a native mobile app for iOS and Android built with [Expo](https://expo.dev/) and React Native. It connects to your self-hosted Sofa server and provides the same core features as the web app. The iOS app requires iOS 17 or later.
 
 <div style={{ width: "100%", display: "flex", justifyContent: "center", gap: 10 }}>
   <a