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.

research/zapier/scratch/veraetime/src/test/authentication.test.ts

@@ -0,0 +1,22 @@
+import { describe, expect, it } from 'vitest';
+import zapier from 'zapier-platform-core';
+
+import App from '../index.js';
+
+const appTester = zapier.createAppTester(App);
+
+describe('app definition', () => {
+  it('exports session auth and core operations', () => {
+    expect(App.authentication?.type).toBe('session');
+    expect(App.creates?.timestamp).toBeTruthy();
+    expect(App.creates?.verify_certificate).toBeTruthy();
+    expect(App.searches?.job_status).toBeTruthy();
+    expect(App.triggers?.timestamp_completed).toBeTruthy();
+    expect(App.creates?.timestamp_wait).toBeTruthy();
+  });
+
+  it('session perform posts to /auth/login', async () => {
+    const perform = App.authentication?.sessionConfig?.perform;
+    expect(typeof perform).toBe('function');
+  });
+});