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/android/app/src/main/AndroidManifest.xml

@@ -3,6 +3,7 @@
     <uses-permission android:name="android.permission.INTERNET" />
     <uses-permission android:name="android.permission.CAMERA" />
     <uses-permission android:name="android.permission.RECORD_AUDIO" />
+    <uses-permission android:name="android.permission.REQUEST_INSTALL_PACKAGES" />
 
     <application
       android:name=".MainApplication"
@@ -24,5 +25,15 @@
             <category android:name="android.intent.category.LAUNCHER" />
         </intent-filter>
       </activity>
+
+      <provider
+        android:name="androidx.core.content.FileProvider"
+        android:authorities="${applicationId}.fileprovider"
+        android:exported="false"
+        android:grantUriPermissions="true">
+        <meta-data
+          android:name="android.support.FILE_PROVIDER_PATHS"
+          android:resource="@xml/file_paths" />
+      </provider>
     </application>
 </manifest>

android/android/app/src/main/java/com/ariacockpit/ApkInstallerModule.kt

@@ -0,0 +1,44 @@
+package com.ariacockpit
+
+import android.content.Intent
+import android.net.Uri
+import android.os.Build
+import androidx.core.content.FileProvider
+import com.facebook.react.bridge.ReactApplicationContext
+import com.facebook.react.bridge.ReactContextBaseJavaModule
+import com.facebook.react.bridge.ReactMethod
+import com.facebook.react.bridge.Promise
+import java.io.File
+
+class ApkInstallerModule(reactContext: ReactApplicationContext) : ReactContextBaseJavaModule(reactContext) {
+    override fun getName() = "ApkInstaller"
+
+    @ReactMethod
+    fun install(filePath: String, promise: Promise) {
+        try {
+            val file = File(filePath)
+            if (!file.exists()) {
+                promise.reject("FILE_NOT_FOUND", "APK nicht gefunden: $filePath")
+                return
+            }
+
+            val context = reactApplicationContext
+            val uri: Uri = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+                FileProvider.getUriForFile(context, "${context.packageName}.fileprovider", file)
+            } else {
+                Uri.fromFile(file)
+            }
+
+            val intent = Intent(Intent.ACTION_VIEW).apply {
+                setDataAndType(uri, "application/vnd.android.package-archive")
+                addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
+                addFlags(Intent.FLAG_GRANT_READ_URI_PERMISSION)
+            }
+
+            context.startActivity(intent)
+            promise.resolve(true)
+        } catch (e: Exception) {
+            promise.reject("INSTALL_ERROR", e.message, e)
+        }
+    }
+}

android/android/app/src/main/java/com/ariacockpit/ApkInstallerPackage.kt

@@ -0,0 +1,16 @@
+package com.ariacockpit
+
+import com.facebook.react.ReactPackage
+import com.facebook.react.bridge.NativeModule
+import com.facebook.react.bridge.ReactApplicationContext
+import com.facebook.react.uimanager.ViewManager
+
+class ApkInstallerPackage : ReactPackage {
+    override fun createNativeModules(reactContext: ReactApplicationContext): List<NativeModule> {
+        return listOf(ApkInstallerModule(reactContext))
+    }
+
+    override fun createViewManagers(reactContext: ReactApplicationContext): List<ViewManager<*, *>> {
+        return emptyList()
+    }
+}

android/android/app/src/main/java/com/ariacockpit/MainApplication.kt

@@ -18,8 +18,7 @@ class MainApplication : Application(), ReactApplication {
       object : DefaultReactNativeHost(this) {
         override fun getPackages(): List<ReactPackage> =
             PackageList(this).packages.apply {
-              // Packages that cannot be autolinked yet can be added manually here, for example:
-              // add(MyReactNativePackage())
+              add(ApkInstallerPackage())
             }
 
         override fun getJSMainModuleName(): String = "index"

android/android/app/src/main/res/xml/file_paths.xml

@@ -0,0 +1,4 @@
+<?xml version="1.0" encoding="utf-8"?>
+<paths>
+    <cache-path name="cache" path="." />
+</paths>

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}`);