Atualização geral de optimazação e desing

lib/auth_gate.dart

@@ -1,6 +1,7 @@
-import 'package:firebase_auth/firebase_auth.dart';
 import 'package:flutter/material.dart';
+import 'package:supabase_flutter/supabase_flutter.dart';
 
+import 'main.dart' show supabase;
 import 'home_screen.dart';
 import 'logged_home.dart';
 
@@ -14,10 +15,11 @@ class AuthGate extends StatelessWidget {
     return ValueListenableBuilder<bool>(
       valueListenable: forceHomeScreen,
       builder: (context, forcedHome, _) {
-        return StreamBuilder<User?>(
-          stream: FirebaseAuth.instance.authStateChanges(),
+        return StreamBuilder<AuthState>(
+          stream: supabase.auth.onAuthStateChange,
+          initialData: AuthState(AuthChangeEvent.initialSession, supabase.auth.currentSession),
           builder: (context, snapshot) {
-            final user = snapshot.data;
+            final user = snapshot.data?.session?.user;
 
             final Widget child;
             if (snapshot.connectionState == ConnectionState.waiting) {