chore: scaffold node:test runner for V2 deterministic logic

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

logic/sanity.test.js

@@ -0,0 +1,6 @@
+const { test } = require('node:test');
+const assert = require('node:assert/strict');
+
+test('node:test runner funciona', () => {
+  assert.equal(1 + 1, 2);
+});