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/example-apps/line-items/creates/order.js

@@ -0,0 +1,67 @@
+const perform = async (z, bundle) => {
+  const response = await z.request({
+    url: 'https://httpbin.zapier-tooling.com/post',
+    method: 'POST',
+    body: {
+      name: bundle.inputData.name,
+      line_items: bundle.inputData.line_items,
+    },
+  });
+
+  return response.data;
+};
+
+module.exports = {
+  key: 'order',
+  noun: 'Order',
+  display: {
+    label: 'Create Order',
+    description: 'Creates a new order with line items.',
+  },
+  operation: {
+    inputFields: [
+      { key: 'name', required: true, type: 'string', label: 'Order Name' },
+      {
+        key: 'line_items',
+        label: 'Line Items',
+        children: [
+          {
+            key: 'product_name',
+            type: 'string',
+            label: 'Product Name',
+            required: true,
+          },
+          {
+            key: 'quantity',
+            type: 'integer',
+            label: 'Quantity',
+            required: true,
+          },
+          { key: 'price', type: 'number', label: 'Unit Price' },
+        ],
+      },
+    ],
+    perform,
+    sample: {
+      id: 1,
+      name: 'Stationery Order',
+      line_items: [
+        { product_name: 'Pens', quantity: 12, price: 1.5 },
+        { product_name: 'Notebooks', quantity: 3, price: 8.99 },
+      ],
+    },
+    outputFields: [
+      { key: 'id', label: 'ID' },
+      { key: 'name', label: 'Order Name' },
+      {
+        key: 'line_items',
+        label: 'Line Items',
+        children: [
+          { key: 'product_name', label: 'Product Name' },
+          { key: 'quantity', label: 'Quantity' },
+          { key: 'price', label: 'Unit Price' },
+        ],
+      },
+    ],
+  },
+};