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/files/hydrators.js

@@ -0,0 +1,16 @@
+module.exports = {
+  downloadFile: async (z, bundle) => {
+    // Use standard auth to request the file
+    const filePromise = z.request({
+      url: bundle.inputData.url,
+      raw: true,
+    });
+
+    // When `raw` is true, the result of z.request() can be passed to
+    // z.stashFile(). z.stashFile() will upload the file to a Zapier-owned S3
+    // bucket and return a promise of an S3 URL that allows Zapier to get the
+    // file without auth. If your file URL is permanently publicly available,
+    // you may skip z.stashFile() and return that URL directly here.
+    return z.stashFile(filePromise);
+  },
+};