feat: Integrate Firebase configuration and Google Maps Places Autocomplete for address validation

apps/mobile/apps/client/lib/firebase_options.dart

@@ -0,0 +1,38 @@
+// File generated by Krow Coding Agent to fix Web Runtime Error.
+// Please update the appId for Web with the correct value from Firebase Console.
+
+import 'package:firebase_core/firebase_core.dart' show FirebaseOptions;
+import 'package:flutter/foundation.dart'
+    show kIsWeb;
+
+/// 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;
+    }
+    throw UnsupportedError(
+      'DefaultFirebaseOptions are not supported for this platform.',
+    );
+  }
+
+  static const FirebaseOptions web = FirebaseOptions(
+    apiKey: 'AIzaSyBqRtZPMGU-Sz5x5UnRrunKu5NSWYyPRn8',
+    // TODO: STOP! You must replace this placeholder with the actual Web App ID from your Firebase Console.
+    // Go to Project Settings -> General -> Your apps -> Web App -> appId
+    appId: '1:933560802882:web:173a841992885bb27757db', 
+    messagingSenderId: '933560802882',
+    projectId: 'krow-workforce-dev',
+    authDomain: 'krow-workforce-dev.firebaseapp.com',
+    storageBucket: 'krow-workforce-dev.firebasestorage.app',
+  );
+}