test: add deliberate failure to verify CI pipeline

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

tests/test_sample.py

@@ -87,3 +87,8 @@ def test_sample_ir_json_is_valid():
         assert isinstance(data, (dict, list))
     else:
         pytest.skip("Sample IR JSON not found")
+
+
+def test_deliberate_failure():
+    """This test is designed to fail - for CI failure verification."""
+    assert 1 == 2, "Deliberate failure to test CI pipeline"