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.

scripts/gate-all.mjs

@@ -0,0 +1,27 @@
+#!/usr/bin/env node
+/**
+ * Run gates 0–12 in dependency order. Stops on first failure.
+ */
+
+import { spawnSync } from 'node:child_process';
+import { resolve, dirname } from 'node:path';
+import { fileURLToPath } from 'node:url';
+
+const root = resolve(dirname(fileURLToPath(import.meta.url)), '..');
+const gates = [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12];
+
+for (const g of gates) {
+  console.log(`\n========== GATE ${g} ==========`);
+  const result = spawnSync('npm', ['run', `gate:${g}`], {
+    cwd: root,
+    stdio: 'inherit',
+    shell: true,
+  });
+  if (result.status !== 0) {
+    console.error(`\ngate:all stopped at GATE ${g}`);
+    process.exit(result.status ?? 1);
+  }
+}
+
+console.log('\ngate:all PASSED (0–12)');
+process.exit(0);