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/VersionSchema.js

@@ -0,0 +1,29 @@
+'use strict';
+
+const makeSchema = require('../utils/makeSchema');
+
+module.exports = makeSchema({
+  id: '/VersionSchema',
+  description:
+    'Represents a simplified semver string, from `0.0.0` to `999.999.999` with optional simplified label. They need to be case-insensitive unique.',
+  type: 'string',
+  pattern:
+    // this is mirrored in ZapierBaseCommand.js and developer_cli/constants.py
+    '^(?:0|[1-9]\\d{0,2})\\.(?:0|[1-9]\\d{0,2})\\.(?:0|[1-9]\\d{0,2})(?:-(?=.{1,12}$)[A-Za-z0-9]+(?:-[A-Za-z0-9]+)*)?$',
+  minLength: 5,
+  maxLength: 24,
+  examples: ['1.0.0', '2.11.3', '999.999.999', '1.2.0-beta', '0.0.0-ISSUE-123'],
+  antiExamples: [
+    { example: '1.0.0.0', reason: 'Must have 2 periods' },
+    { example: '1000.0.0', reason: 'Each number can be a maximum of 3 digits' },
+    { example: 'v1.0.0', reason: 'No letter prefix allowed' },
+    { example: '1.0.0-rc.1', reason: 'No periods allowed in label' },
+    { example: '1.0.0--', reason: 'No repeated dashes allowed' },
+    {
+      example: '1.0.0-foo--bar',
+      reason: 'No repeated dashes allowed in label',
+    },
+    { example: '1.0.0-', reason: 'No empty label allowed' },
+    { example: '1.0.0-foo-', reason: 'No trailing dash allowed in label' },
+  ],
+});