wip: Sicherungs-Commit aller Änderungen seit April + Arbeitsstruktur (CLAUDE.md, ROADMAP.md, PROGRESS.md, Autopilot)

6 Wochen uncommittete Arbeit (Voice-Channels, LiveKit-Manager, Settings-Modal u.v.m.)
als ein WIP-Commit gesichert, damit nichts verloren geht und der Pi den aktuellen
Stand klonen kann. Thematische Aufarbeitung: siehe ROADMAP M0.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01CPrAGBxBT6GfPXzeWQ4AXb

lib/main.dart

@@ -1,11 +1,41 @@
+import 'dart:io';
+
+import 'package:firebase_core/firebase_core.dart';
+import 'package:firebase_messaging/firebase_messaging.dart';
 import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
 import 'package:flutter_riverpod/flutter_riverpod.dart';
+import 'package:flutter_vodozemac/flutter_vodozemac.dart' as vod;
+import 'package:media_kit/media_kit.dart';
 import 'package:pyramid/core/app.dart';
+import 'package:pyramid/core/background_push.dart';
 import 'package:pyramid/core/matrix_client.dart';
 import 'package:pyramid/features/auth/login_notifier.dart';
+import 'package:pyramid/widgets/pyramid_loader.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
+  MediaKit.ensureInitialized();
+
+  if (Platform.isAndroid) {
+    // Firebase must be initialised first, then the background handler registered.
+    try { await Firebase.initializeApp(); } catch (_) {}
+    FirebaseMessaging.onBackgroundMessage(handleBackgroundMessage);
+    // Store the background-engine callback handle so PushService.kt /
+    // ReplyReceiver can decrypt + send encrypted replies when the app is killed.
+    await registerBgEngineHandle();
+  }
+
+  // Catch unhandled async exceptions to prevent silent crashes
+  FlutterError.onError = (details) {
+    FlutterError.presentError(details);
+  };
+
+  await vod.init();
+
+  // Hide status bar and navigation bar for immersive feel
+  await SystemChrome.setEnabledSystemUIMode(SystemUiMode.immersiveSticky);
+  
   runApp(const ProviderScope(child: PyramidBootstrap()));
 }
 
@@ -18,7 +48,7 @@ class PyramidBootstrap extends ConsumerWidget {
 
     return clientAsync.when(
       loading: () => const MaterialApp(
-        home: Scaffold(body: Center(child: CircularProgressIndicator())),
+        home: Scaffold(body: Center(child: PyramidLoader(size: 80))),
       ),
       error: (e, _) => MaterialApp(
         home: Scaffold(body: Center(child: Text('Fehler: $e'))),