v1.8.0 — add plan2code-metrics recursive self-improvement toolchain

New package for contributors to collect, aggregate, analyze, and improve
workflow prompts based on real project data. Includes unit tests (vitest),
installer integration, and loop/finalize hints.

plan2code-metrics/src/bin/plan2code-metrics.ts

@@ -0,0 +1,17 @@
+import { runCLI } from '../cli.js';
+
+async function main() {
+  try {
+    await runCLI();
+    process.exit(0);
+  } catch (err) {
+    if (err instanceof Error && err.message.includes('User force closed')) {
+      // Ctrl+C — exit cleanly
+      process.exit(0);
+    }
+    console.error(err instanceof Error ? err.message : String(err));
+    process.exit(1);
+  }
+}
+
+main();