Initial push of Plunk Next

apps/api/src/app/stripe.ts

@@ -0,0 +1,14 @@
+import Stripe from 'stripe';
+
+import {STRIPE_ENABLED, STRIPE_SK} from './constants.js';
+
+/**
+ * Stripe client instance
+ * Only initialized if STRIPE_SK is configured
+ * Returns null if billing is disabled (self-hosted mode)
+ */
+export const stripe = STRIPE_ENABLED
+  ? new Stripe(STRIPE_SK, {
+      apiVersion: '2025-10-29.clover',
+    })
+  : null;