refactor: Retrieve shop ID from user profiles table instead of directly querying shops by owner ID, and update check_db for verification.

src/context/AppContext.tsx

@@ -44,14 +44,15 @@ export const AppProvider = ({ children }: { children: React.ReactNode }) => {
       const { data } = await supabase.auth.getUser();
       if (data.user) {
         let shopId: string | undefined = undefined;
-        // tenta ir buscar a barbearia ligada ao user atual (owner_id)
-        const { data: existingShop } = await supabase
-          .from('shops')
-          .select('id')
-          .eq('owner_id', data.user.id)
-          .maybeSingle();
 
-        shopId = existingShop?.id; // Não forçamos igual a userid. Ou existe, ou é undefined.
+        // Vai buscar o shop_id mapeado na tabela profiles
+        const { data: prof } = await supabase
+          .from('profiles')
+          .select('shop_id')
+          .eq('id', data.user.id)
+          .single();
+
+        shopId = prof?.shop_id || undefined;
 
         setUser({
           id: data.user.id,