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/cli/tsconfig.json

@@ -0,0 +1,11 @@
+// Check files that opt-in with `// @ts-check` at the top of the file.
+{
+  "compilerOptions": {
+    "allowJs": true,
+    "checkJs": false,
+    "noEmit": true,
+    "skipLibCheck": true
+  },
+  "include": ["./src/**/*.js"],
+  "exclude": ["./src/tests/**/*.js", "./src/generators/**/*.js"]
+}