implement six-skill gstack 2 runtime

scripts/gstack2/check-generated.ts

@@ -0,0 +1,33 @@
+#!/usr/bin/env bun
+
+import { ROOT } from './render-legacy';
+
+const GENERATED_PATHS = [
+  'skills',
+  'compat',
+  'evals/parity',
+  'docs/gstack-2/JUDGMENT-PARITY.md',
+  'docs/gstack-2/JUDGMENT-PROVENANCE.json',
+  'docs/gstack-2/SCENARIOS.md',
+  'docs/gstack-2/SKILL-MIGRATION.md',
+] as const;
+
+const result = Bun.spawnSync({
+  cmd: ['git', 'status', '--porcelain=v1', '--untracked-files=all', '--', ...GENERATED_PATHS],
+  cwd: ROOT,
+  stdout: 'pipe',
+  stderr: 'pipe',
+});
+
+if (result.exitCode !== 0) {
+  throw new Error(`Unable to check generated GStack 2 files: ${result.stderr.toString().trim()}`);
+}
+
+const dirty = result.stdout.toString().trim();
+if (dirty) {
+  process.stderr.write('GStack 2 generated files are stale or uncommitted. Run `bun run gen:gstack2` and commit the resulting files:\n');
+  process.stderr.write(`${dirty}\n`);
+  process.exitCode = 1;
+} else {
+  process.stdout.write(`GStack 2 generated files are fresh (${GENERATED_PATHS.length} path roots checked).\n`);
+}