test: make coverage suite CI-safe

Avoid enabling semantic scoring in coverage tests so CI doesn't require optional sentence-transformers.

Made-with: Cursor

Author: Sayeem3051

tests/unit/test_coverage_features.py

@@ -464,7 +464,7 @@ def _no_embeddings(*args, **kwargs):  # noqa: ARG001
         .no_git()
         .use_import_graph(depth=2)
         .no_import_graph()
-        .use_semantic(model="all-mpnet-base-v2")
+        # Do not enable semantic scoring here; CI installs `.[dev]` (no sentence-transformers).
         .no_gitignore()
         .allow("a.py")
         .deny("nope")