feat: Persist new barber shops to Supabase and use a unified ID for new barberia users and their shops.

web/src/context/AppContext.tsx

@@ -153,6 +153,19 @@ export const AppProvider = ({ children }: { children: React.ReactNode }) => {
               products: [],
             };
             shops = [...shops, shop];
+
+            // 🔹 INSERT REAL NA BD SUPABASE 
+            // Garante que a mobile app e outros clients consigam obter esta nova loja
+            void supabase.from('shops').insert([
+              {
+                id: shopIdFromOwner,
+                name: shopName,
+                address: 'Endereço a definir',
+                rating: 0
+              }
+            ]).then(({ error }) => {
+              if (error) console.error("Erro ao sincronizar shop nova na BD:", error);
+            });
           }
         }
 
@@ -227,7 +240,8 @@ export const AppProvider = ({ children }: { children: React.ReactNode }) => {
     if (exists) return false;
 
     if (payload.role === 'barbearia') {
-      const shopId = nanoid();
+      const userId = nanoid(); // Geramos o userId agora e usamos como shopId
+      const shopId = userId;
       const shop: BarberShop = {
         id: shopId,
         name: shopName || `Barbearia ${payload.name}`,
@@ -237,7 +251,7 @@ export const AppProvider = ({ children }: { children: React.ReactNode }) => {
         services: [],
         products: [],
       };
-      const user: User = { ...payload, id: nanoid(), role: 'barbearia', shopId };
+      const user: User = { ...payload, id: userId, role: 'barbearia', shopId };
       setState((s) => ({
         ...s,
         user,