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/basic-auth/README.md

@@ -0,0 +1,34 @@
+# basic-auth
+
+This Zapier integration project is generated by the `zapier-platform init` CLI command.
+
+These are what you normally do next:
+
+```bash
+# Install dependencies
+npm install  # or you can use yarn
+
+# Run tests
+zapier-platform test
+
+# Register the integration on Zapier if you haven't
+zapier-platform register "App Title"
+
+# Or you can link to an existing integration on Zapier
+zapier-platform link
+
+# Push it to Zapier
+zapier-platform push
+```
+
+Then, to add more features, you can use the `zapier-platform scaffold` command, for example:
+
+```bash
+# Add a trigger
+zapier-platform scaffold trigger contact
+
+# Add an action
+zapier-platform scaffold create contact
+``` 
+
+Find out more on the latest docs: https://github.com/zapier/zapier-platform/blob/main/packages/cli/README.md.