Fix ruff warning - use direct attribute access instead of getattr

app/local-ai-commit-reviewer/src/cli/cli.py

@@ -242,7 +242,7 @@ def _set_nested_attr(obj, attr_path: str, value: Any) -> None:
     if hasattr(current, final_attr):
         attr = getattr(type(current), final_attr, None)
         if attr is not None and hasattr(attr, "annotation"):
-            type_hint = getattr(attr, "annotation")
+            type_hint = attr.annotation  # type: ignore[attr-defined]
             if getattr(type_hint, "__origin__", None) is Union:
                 type_hint = type_hint.__args__[0]
             if hasattr(type_hint, "__name__"):