test(md2doc): style smoke test for all 5 styles

tests/test_md2doc_styles.py

@@ -0,0 +1,19 @@
+"""Smoke test — all 5 styles produce valid DOCX from same input."""
+import subprocess
+import sys
+from pathlib import Path
+
+REPO = Path(__file__).parent.parent
+
+
+def test_all_styles_produce_valid_docx(tmp_path):
+    fixture = REPO / "pluxee-todo.md"
+    for style in ("elegant", "report", "default", "dark", "mono"):
+        out = tmp_path / f"pluxee-{style}.docx"
+        r = subprocess.run(
+            [sys.executable, "md2doc.py", str(fixture), "-o", str(out), "--style", style, "-q"],
+            cwd=REPO, capture_output=True, text=True
+        )
+        assert r.returncode == 0, f"style={style} failed: stderr={r.stderr}"
+        assert out.exists()
+        assert out.stat().st_size > 1000, f"style={style} produced too-small file"