add gstack 2 parity and lifecycle gates

test/skill-check-gstack2.test.ts

@@ -0,0 +1,17 @@
+import { expect, test } from 'bun:test';
+import * as path from 'node:path';
+
+const ROOT = path.resolve(import.meta.dir, '..');
+
+test('skill:check accepts the six-skill package without reviving retired monoliths', () => {
+  const result = Bun.spawnSync(['bun', 'run', 'scripts/skill-check.ts'], {
+    cwd: ROOT,
+    stdout: 'pipe',
+    stderr: 'pipe',
+  });
+  const output = `${result.stdout.toString()}${result.stderr.toString()}`;
+  expect(result.exitCode).toBe(0);
+  expect(output).toContain('exactly six dispatchers (debug, design, plan, qa, review, ship)');
+  expect(output).toContain('monolith output retired by GStack 2');
+  expect(output).not.toContain('generated file missing');
+});