fix: improve claim plan flow

packages/ee/server-only/stripe/webhook/early-adopter-checkout-metadata.ts

@@ -0,0 +1,13 @@
+import { z } from 'zod';
+
+export const ZEarlyAdopterCheckoutMetadataSchema = z.object({
+  name: z.string(),
+  email: z.string(),
+  signatureText: z.string(),
+  signatureDataUrl: z.string().optional(),
+  source: z.literal('marketing'),
+});
+
+export type TEarlyAdopterCheckoutMetadataSchema = z.infer<
+  typeof ZEarlyAdopterCheckoutMetadataSchema
+>;