fix: Google Sign-In - Firebase Admin credentials via env var + mobile redirect flow

frontend/src/views/AuthView.vue

@@ -1,10 +1,36 @@
 <script setup lang="ts">
-import { ref } from 'vue'
+import { ref, onMounted } from 'vue'
+import { useRouter } from 'vue-router'
 import LoginForm from '@/components/auth/LoginForm.vue'
 import RegisterForm from '@/components/auth/RegisterForm.vue'
+import { getGoogleRedirectResult } from '@/firebaseConfig'
+import { authService } from '@/services/authService'
+import { useAuthStore } from '@/stores/auth'
 
 const isLogin = ref(true)
 const toggleAuth = () => { isLogin.value = !isLogin.value }
+const router = useRouter()
+const authStore = useAuthStore()
+
+// Handle redirect result from Google Sign-In on mobile
+// (signInWithRedirect reloads the page; we catch the result here on load)
+onMounted(async () => {
+  try {
+    const result = await getGoogleRedirectResult()
+    if (result) {
+      const response = await authService.googleLogin(result.token)
+      authStore.login(response.access_token, response.role, response.full_name)
+      const role = response.role.toUpperCase()
+      if (role === 'ADMIN') router.push('/admin')
+      else if (role === 'DRIVER') router.push('/driver')
+      else if (role === 'PROMOTER') router.push('/promoter')
+      else router.push('/map')
+    }
+  } catch (e) {
+    // No redirect result pending, or error — ignore silently
+    console.warn('Google redirect result:', e)
+  }
+})
 </script>
 
 <template>