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 */}

android/src/services/updater.ts

@@ -7,12 +7,13 @@
  * 3. App zeigt Benachrichtigung → User bestaetigt → Download + Install
  */
 
-import { Alert, Linking, Platform } from 'react-native';
+import { Alert, Linking, Platform, NativeModules } from 'react-native';
 import RNFS from 'react-native-fs';
 import rvs, { RVSMessage } from './rvs';
 
-// Aktuelle App-Version (aus package.json via Build)
-const APP_VERSION = '0.0.2.3'; // TODO: aus nativer Build-Config lesen
+// Version aus package.json (wird beim Build eingebettet)
+const packageJson = require('../../package.json');
+const APP_VERSION = packageJson.version || '0.0.0.0';
 
 type UpdateCallback = (info: UpdateInfo) => void;
 
@@ -116,9 +117,17 @@ class UpdateService {
       const fileSize = await RNFS.stat(destPath);
       console.log(`[Update] APK gespeichert: ${destPath} (${(parseInt(fileSize.size) / 1024 / 1024).toFixed(1)}MB)`);
 
-      // APK installieren (oeffnet Android-Installer)
+      // APK installieren via natives ApkInstaller Module (FileProvider + Intent)
       if (Platform.OS === 'android') {
-        await Linking.openURL(`file://${destPath}`);
+        try {
+          const { ApkInstaller } = NativeModules;
+          await ApkInstaller.install(destPath);
+        } catch (installErr: any) {
+          Alert.alert(
+            'APK heruntergeladen',
+            `Version ${info.version} gespeichert.\n\nBitte manuell installieren:\nDateimanager → ${apkData.fileName} antippen.\n\n(${installErr.message})`,
+          );
+        }
       }
     } catch (err: any) {
       console.error(`[Update] Fehler: ${err.message}`);