fix: react-doctor async-defer-await 10→0 (move await below guards), rerender-memo-with-default-value 13→0 (module-scope EMPTY_* defaults)

src/actions/checkout.ts

@@ -182,7 +182,8 @@ export async function mergeLocalCart(
   userId: string
 ): Promise<{ merged: CartItem[] }> {
 
-await getSession();  if (!localCart || localCart.length === 0) return { merged: [] };
+  if (!localCart || localCart.length === 0) return { merged: [] };
+  await getSession();
 
   // Fetch server cart
   let serverCart: CartItem[] = [];
@@ -282,7 +283,8 @@ export async function checkStopProductAvailability(
   productIds: string[]
 ): Promise<ProductAvailability[]> {
 
-await getSession();  if (!productIds || productIds.length === 0) return [];
+  if (!productIds || productIds.length === 0) return [];
+  await getSession();
   const { rows } = await pool.query<{ check_stop_product_availability: ProductAvailability[] | null }>(
     `SELECT check_stop_product_availability($1, $2::uuid[]) AS "check_stop_product_availability"`,
     [stopId, productIds],