Major new addition: refactor tool

Supports decomposing large components and files, finding codesmells, finding modernizing opportunities as well as code organization opportunities. Fix this mega-classes today!
Line numbers added to embedded code for better references from model -> claude

tools/codereview.py

@@ -148,6 +148,10 @@ class CodeReviewTool(BaseTool):
     def get_default_temperature(self) -> float:
         return TEMPERATURE_ANALYTICAL
 
+    def wants_line_numbers_by_default(self) -> bool:
+        """Code review tool needs line numbers for precise feedback"""
+        return True
+
     def get_request_model(self):
         return CodeReviewRequest