ci(mindmodel): add report-only mindmodel validation workflow

tests/ci/test_workflow_exists.py

@@ -0,0 +1,26 @@
+import os
+
+try:
+    import yaml
+
+    _HAS_YAML = True
+except Exception:
+    _HAS_YAML = False
+
+
+def test_mindmodel_workflow_exists_and_parses():
+    path = os.path.join(".github", "workflows", "mindmodel-validation.yml")
+    assert os.path.exists(path), f"Workflow file {path} does not exist"
+
+    # Minimal parse: if PyYAML is available, try safe_load; otherwise do a token check
+    with open(path, "r", encoding="utf-8") as f:
+        content = f.read()
+
+    if _HAS_YAML:
+        data = yaml.safe_load(content)
+        assert data is not None and isinstance(data, dict)
+        assert "on" in data or "name" in data
+    else:
+        # fall back to simple checks to avoid introducing new deps
+        assert "name:" in content
+        assert "on:" in content