feat: auto redirect to stripe checkout on pricing registration

src/App.tsx

@@ -93,6 +93,31 @@ const AppContent: React.FC = () => {
   const handleAuthSuccess = async () => {
     setIsModalOpen(false);
     await refreshProfile();
+
+    // Se acabou de fazer o cadastro clicando em um plano pago (monthly), leva direto pro Stripe!
+    if (authMode === 'register' && selectedPlan === 'monthly') {
+      try {
+        const { data: { session } } = await supabase.auth.getSession();
+        if (session) {
+          const res = await fetch(`${import.meta.env.VITE_SUPABASE_URL}/functions/v1/stripe-checkout`, {
+            method: "POST",
+            headers: {
+              "Content-Type": "application/json",
+              "Authorization": `Bearer ${session.access_token}`,
+            },
+            body: JSON.stringify({ plan: "mensal" })
+          });
+          const { url, error } = await res.json();
+          if (!error && url) {
+            window.location.href = url; // Redireciona pro Checkout
+            return;
+          }
+        }
+      } catch (e) {
+        console.error("Falha ao redirecionar para o checkout:", e);
+      }
+    }
+
     // Login intent logic handled inside context or simply by state update
     localStorage.removeItem('login_intent');
   };