fix: Auto-update APK install via FileProvider + dynamic version

- Native ApkInstallerModule: FileProvider content:// URI for Android 7+
- REQUEST_INSTALL_PACKAGES permission in AndroidManifest
- file_paths.xml for FileProvider cache access
- APP_VERSION reads from package.json (not hardcoded)
- "Auf Updates pruefen" button in Settings
- Version display reads from package.json dynamically

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

android/src/screens/SettingsScreen.tsx

@@ -748,11 +748,21 @@ const SettingsScreen: React.FC = () => {
       <Text style={styles.sectionTitle}>{'\u00DC'}ber</Text>
       <View style={styles.card}>
         <Text style={styles.aboutTitle}>ARIA Cockpit</Text>
-        <Text style={styles.aboutVersion}>Version 0.0.2.8 </Text>
+        <Text style={styles.aboutVersion}>Version {require('../../package.json').version}</Text>
         <Text style={styles.aboutInfo}>
           Stefans Kommandozentrale f{'\u00FC'}r ARIA.{'\n'}
           Gebaut mit React Native + TypeScript.
         </Text>
+        <TouchableOpacity
+          style={[styles.connectButton, {marginTop: 12}]}
+          onPress={() => {
+            const updateService = require('../services/updater').default;
+            updateService.checkForUpdate();
+            Alert.alert('Update-Check', 'Pruefe auf neue Version...');
+          }}
+        >
+          <Text style={styles.connectButtonText}>Auf Updates pr{'\u00FC'}fen</Text>
+        </TouchableOpacity>
       </View>
 
       {/* Platz am Ende */}