fix(node): align Grok hook loader contract

test/grok-official.test.mjs

@@ -0,0 +1,53 @@
+import assert from 'node:assert/strict';
+import test from 'node:test';
+import {
+  createFixture,
+  runProcess,
+} from '../test-support/grok-test-helpers.mjs';
+
+const grokBinary = process.env.ELYDORA_GROK_BINARY;
+
+test('official Grok Build 0.2.106 discovers the installed matchless hook contract', {
+  skip: grokBinary ? false : 'set ELYDORA_GROK_BINARY to the official Grok Build executable',
+}, async () => {
+  const fixture = await createFixture();
+  try {
+    const install = await fixture.install();
+    assert.equal(install.code, 0, install.stderr);
+    const environment = {
+      HOME: fixture.homeDir,
+      USERPROFILE: fixture.homeDir,
+      GROK_HOME: fixture.grokHome,
+    };
+    const version = await runProcess(
+      grokBinary,
+      ['--version'],
+      environment,
+      fixture.projectDir,
+    );
+    assert.equal(version.code, 0, version.stderr);
+    assert.match(version.stdout, /grok 0\.2\.106\b/);
+
+    const inspect = await runProcess(
+      grokBinary,
+      ['inspect', '--json'],
+      environment,
+      fixture.projectDir,
+    );
+    assert.equal(inspect.code, 0, inspect.stderr);
+    const report = JSON.parse(inspect.stdout);
+    assert.equal(report.grokVersion, '0.2.106');
+    assert.deepEqual(
+      report.hooks
+        .map(({ event, hookType, matcher }) => ({ event, hookType, matcher }))
+        .sort((left, right) => left.event.localeCompare(right.event)),
+      [
+        { event: 'PostToolUse', hookType: 'command', matcher: null },
+        { event: 'PostToolUseFailure', hookType: 'command', matcher: null },
+        { event: 'PreToolUse', hookType: 'command', matcher: null },
+      ],
+    );
+  } finally {
+    await fixture.close();
+  }
+});