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.

packages/verae-zapier/README.md

@@ -0,0 +1,34 @@
+# verae-zapier
+
+Zapier Platform CLI app for Verae. **Phase 11** in [../TODO.md](../TODO.md).
+
+## Role
+
+Runs on **Zapier’s servers**. Calls only the middleware HTTPS API (`MIDDLEWARE_BASE_URL`), never NATS and never `api.veraetime.net` directly.
+
+## Planned modules
+
+| File | Purpose |
+|------|---------|
+| `authentication.js` | Custom API key auth → `GET /zapier/v1/auth/me` |
+| `index.js` | App definition, beforeRequest, afterResponse error mapping |
+| `creates/timestamp_and_wait.js` | Primary action |
+| `creates/create_timestamp.js` | Async jobId action |
+| `creates/verify_timestamp.js` | Verify certificate |
+| `creates/batch_timestamp.js` | Batch create |
+| `searches/job_status.js` | Lookup by jobId |
+| `triggers/timestamp_completed.js` | REST Hook |
+
+See [../docs/developer/modules/function-reference.md](../docs/developer/modules/function-reference.md) for I/O contracts.
+
+## Env
+
+```bash
+export MIDDLEWARE_BASE_URL=https://your-middleware.example.com
+```
+
+## Gate
+
+```bash
+npm run gate:11   # from monorepo root, after Phase 11 implementation
+```