fix(settings): read the build number from expo-application

The row said '1.0.0 (dev)' on a build stamped 2026081502.

Constants.nativeBuildVersion is deprecated in SDK 57 and returns nothing — not an
error, not a throw, just undefined, so the fallback fired and the screen reported the
opposite of the truth with complete confidence. A deprecation that quietly returns
undefined is the worst kind: everything looks like it is working.

expo-application is the documented replacement and reads the value from the bundle at
runtime, which is the number OAS stamps before signing.

Also removes the last use of expo-constants here, and with it the '1.0.0' half — the
marketing string that has never changed and cannot tell two builds apart.

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

src/settings/SettingsScreen.tsx

@@ -3,7 +3,7 @@ import type { ImageSourcePropType } from 'react-native';
 import { View, Text, Pressable, ScrollView, Image } from 'react-native';
 import { Ionicons } from '@expo/vector-icons';
 import { useSafeAreaInsets } from 'react-native-safe-area-context';
-import Constants from 'expo-constants';
+import * as Application from 'expo-application';
 
 import { useTheme } from '../ui/useTheme';
 import { Card } from '../ui/Card';
@@ -91,7 +91,15 @@ export type SettingsScreenProps = {
  * that is not exactly ten digits is shown verbatim instead of being mangled into a fake date.
  */
 function buildLabel(): string {
-  const raw = Constants.nativeBuildVersion ?? '';
+  /*
+   `expo-application`, NOT `Constants.nativeBuildVersion`.
+
+   That property is deprecated in SDK 57 and returns nothing — which is not an error, just an empty
+   string, so the row rendered a confident "1.0.0 (dev)" on a build that had been stamped 2026081502.
+   A deprecation that returns undefined rather than throwing is the worst kind: the screen looked like
+   it was working and was reporting the opposite of the truth.
+  */
+  const raw = Application.nativeBuildVersion ?? '';
   if (!/^\d{10}$/.test(raw)) return raw ? `dev (${raw})` : 'dev';
   return `${raw.slice(0, 4)}.${raw.slice(4, 6)}.${raw.slice(6, 8)}.${raw.slice(8)}`;
 }