fix: resolve infinite loading in Layout and add auth redirect

components/Layout.tsx

@@ -29,23 +29,39 @@ export const Layout: React.FC<{ children: React.ReactNode }> = ({ children }) =>
   useEffect(() => {
     const fetchCurrentUser = async () => {
       const storedUserId = localStorage.getItem('ctms_user_id');
-      if (storedUserId) {
+      
+      if (!storedUserId) {
+        navigate('/login');
+        return;
+      }
+
+      try {
         const user = await getUserById(storedUserId);
         if (user) {
           setCurrentUser(user);
+        } else {
+          // User ID exists in storage but not in DB (deleted user?)
+          localStorage.removeItem('ctms_user_id');
+          navigate('/login');
         }
+      } catch (err) {
+        console.error("Failed to fetch user:", err);
+        // Fallback or error state
       }
     };
     fetchCurrentUser();
-  }, []);
+  }, [navigate]);
 
   const handleLogout = () => {
     localStorage.removeItem('ctms_user_id');
+    localStorage.removeItem('ctms_tenant_id');
     navigate('/login');
   };
 
   if (!currentUser) {
-    return <div className="flex h-screen items-center justify-center bg-slate-50">Carregando...</div>;
+    const storedUserId = localStorage.getItem('ctms_user_id');
+    if (!storedUserId) return null; // Will redirect in useEffect
+    return <div className="flex h-screen items-center justify-center bg-slate-50 text-slate-400">Autenticando...</div>;
   }
 
   const isSuperAdmin = currentUser.role === 'super_admin';