Add cardPublicId to card webhook payloads (#490)

* Add cardPublicId to card webhook payloads

* fix: include card publicId in webhook payloads

Add data.card.publicId to webhook payloads while keeping data.card.id for compatibility, and update card/webhook call sites and tests so webhook consumers can reliably use public IDs.

packages/api/src/routers/webhook.ts

@@ -334,6 +334,7 @@ export const webhookRouter = createTRPCRouter({
 
       const testPayload = createCardWebhookPayload("card.created", {
         id: "test-card-id",
+        publicId: "test-card-public-id",
         title: "Test Card",
         description: "This is a test webhook payload",
         dueDate: null,