fix: use t.skip() instead of assert.ok(true) when Chrome is unavailable in diagram test

[Copilot]

The inline diagram integration test silently passed as green when Chrome/Chromium was not installed, masking the fact that the actual rendering logic was never exercised.

Change

• Updated test callback to accept t (TestContext) and replaced assert.ok(true, 'Test skipped: ...') with t.skip('Chrome/Chromium not installed')

- test('get process instance with --diagram flag without --output prints inline', async () => {
+ test('get process instance with --diagram flag without --output prints inline', async (t) => {
    ...
    } catch (error: any) {
-     if (error.stderr && error.stderr.includes('No Chrome or Chromium browser found')) {
-       assert.ok(true, 'Test skipped: Chrome/Chromium not installed');
+     if (error.stderr && error.stderr.includes('No Chrome or Chromium browser found')) {
+       t.skip('Chrome/Chromium not installed');
      } else {
        throw error;
      }
    }

In CI without Chrome, this test now reports as skipped rather than passed, making the test suite results accurate.

---

✨ Let Copilot coding agent set things up for you — coding agent works faster and does higher quality work when set up for your repo.