Milestone 0: import zappier billing, Verae middleware, and Zapier research

Compose-ready workspace: packages/zappier (rate card, portal, Stripe),
packages/verae-zapier-middleware (timestamp + NATS), packages/verae-zapier
(CLI app), vendor/zapier-platform, and research/zapier vendor corpus.

Gate 0 structure checks pass. Product code and research are not yet wired.

vendor/zapier-platform/packages/schema/lib/schemas/FieldChoiceWithLabelSchema.js

@@ -0,0 +1,37 @@
+'use strict';
+
+const makeSchema = require('../utils/makeSchema');
+
+module.exports = makeSchema({
+  id: '/FieldChoiceWithLabelSchema',
+  description:
+    "An object describing a labeled choice in a static dropdown. Useful if the value a user picks isn't exactly what the zap uses. For instance, when they click on a nickname, but the zap uses the user's full name ([image](https://cdn.zapier.com/storage/photos/8ed01ac5df3a511ce93ed2dc43c7fbbc.png)).",
+  type: 'object',
+  required: ['value', 'sample', 'label'],
+  properties: {
+    value: {
+      description:
+        'The actual value that is sent into the Zap. This is displayed as light grey text in the editor. Should match sample exactly.',
+      type: 'string',
+      minLength: 1,
+    },
+    sample: {
+      description:
+        'A legacy field that is no longer used by the editor, but it is still required for now and should match the value.',
+      type: 'string',
+      minLength: 1,
+    },
+    label: {
+      description: 'A human readable label for this value.',
+      type: 'string',
+      minLength: 1,
+    },
+  },
+  examples: [{ label: 'Red', sample: '#f00', value: '#f00' }],
+  antiExamples: [
+    {
+      example: { label: 'Red', value: '#f00' },
+      reason: 'Missing required key: sample',
+    },
+  ],
+});