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/functional-constraints/pollingThrottle.js

@@ -0,0 +1,35 @@
+'use strict';
+
+const _ = require('lodash');
+const jsonschema = require('jsonschema');
+
+const pollingThrottle = (definition) => {
+  const errors = [];
+  const actionType = 'triggers';
+
+  if (definition[actionType]) {
+    _.each(definition[actionType], (actionDef) => {
+      if (
+        actionDef.operation &&
+        actionDef.operation.throttle &&
+        _.has(actionDef.operation.throttle, 'retry') &&
+        (!actionDef.operation.type || actionDef.operation.type === 'polling')
+      ) {
+        errors.push(
+          new jsonschema.ValidationError(
+            'must not use the "retry" field for a polling trigger.',
+            actionDef.operation.throttle,
+            '/ThrottleObjectSchema',
+            `instance.${actionType}.${actionDef.key}.operation.throttle`,
+            'invalid',
+            'throttle',
+          ),
+        );
+      }
+    });
+  }
+
+  return errors;
+};
+
+module.exports = pollingThrottle;