Phase 2 refinements: Firebase config, dev environment fixes, phase 3 requirement draft

- Integrated Firebase SDK in both Flutter apps (google-services, firebase_options)
- Fixed auth flow, API client, and pairing/status blocs for dev environment
- Added full Flutter project scaffolds (android, ios, web, etc.)
- Added phase 3 chat engine requirement document
- Added bugreport zip pattern to gitignore

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

mitra_app/lib/firebase_options.dart

@@ -0,0 +1,76 @@
+// File generated by FlutterFire CLI.
+// ignore_for_file: type=lint
+import 'package:firebase_core/firebase_core.dart' show FirebaseOptions;
+import 'package:flutter/foundation.dart'
+    show defaultTargetPlatform, kIsWeb, TargetPlatform;
+
+/// Default [FirebaseOptions] for use with your Firebase apps.
+///
+/// Example:
+/// ```dart
+/// import 'firebase_options.dart';
+/// // ...
+/// await Firebase.initializeApp(
+///   options: DefaultFirebaseOptions.currentPlatform,
+/// );
+/// ```
+class DefaultFirebaseOptions {
+  static FirebaseOptions get currentPlatform {
+    if (kIsWeb) {
+      return web;
+    }
+    switch (defaultTargetPlatform) {
+      case TargetPlatform.android:
+        return android;
+      case TargetPlatform.iOS:
+        return ios;
+      case TargetPlatform.macOS:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for macos - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      case TargetPlatform.windows:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for windows - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      case TargetPlatform.linux:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions have not been configured for linux - '
+          'you can reconfigure this by running the FlutterFire CLI again.',
+        );
+      default:
+        throw UnsupportedError(
+          'DefaultFirebaseOptions are not supported for this platform.',
+        );
+    }
+  }
+
+  static const FirebaseOptions android = FirebaseOptions(
+    apiKey: 'AIzaSyDFWlLSWytqwI7LSdUbVrO7J5De9L2LV2U',
+    appId: '1:1068156046511:android:f30784f6b0423131b8185a',
+    messagingSenderId: '1068156046511',
+    projectId: 'halobestie-clone-dev',
+    storageBucket: 'halobestie-clone-dev.firebasestorage.app',
+  );
+
+  static const FirebaseOptions ios = FirebaseOptions(
+    apiKey: 'AIzaSyAQnB5hbj0T5tE4JQZQ9Tx6Whp_u15obMI',
+    appId: '1:1068156046511:ios:b781f67a57d6db7bb8185a',
+    messagingSenderId: '1068156046511',
+    projectId: 'halobestie-clone-dev',
+    storageBucket: 'halobestie-clone-dev.firebasestorage.app',
+    iosBundleId: 'com.halobestie.mitra',
+  );
+
+  static const FirebaseOptions web = FirebaseOptions(
+    apiKey: 'AIzaSyAvDQp6xLOZHSwhaj9Zk3DjcMvQyX0Y7Oc',
+    appId: '1:1068156046511:web:15b173b38aa563ceb8185a',
+    messagingSenderId: '1068156046511',
+    projectId: 'halobestie-clone-dev',
+    authDomain: 'halobestie-clone-dev.firebaseapp.com',
+    storageBucket: 'halobestie-clone-dev.firebasestorage.app',
+    measurementId: 'G-FK3V0LB3TT',
+  );
+
+}