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/billing/stripe-checkout.ts

@@ -88,9 +88,10 @@ export async function createPlanUpgradeCheckout(
   billingPeriod?: "monthly" | "annual"
 ): Promise<{ success: boolean; url?: string; error?: string }> {
 
-await getSession();  if (!["starter", "farm", "enterprise"].includes(planTier)) {
+  if (!["starter", "farm", "enterprise"].includes(planTier)) {
     return { success: false, error: "Invalid plan tier" };
   }
+  await getSession();
   const annual = billingPeriod === "annual";
   return createStripeCheckoutSession(
     brandId,