Add tests for CLI entry point and scoring functionality; enhance service layer tests for similar units

Co-authored-by: Copilot <copilot@github.com>

tests/test_scoring.py

@@ -17,6 +17,8 @@ def test_score_ad_and_classify():
         rooms=4,
     )
     scores = score_ad(ad, unit, [])
-    assert scores["market_position"] >= 0
+    assert "total" in scores
+    assert scores["total"] >= 0
+    assert scores["total"] <= 100
     categories = classify_ad(scores)
     assert isinstance(categories, list)