Extended docstring of SearchForPatternTool

The LM had a hard time doing good searches.

scripts/demo_run_tools.py

@@ -28,6 +28,11 @@ if __name__ == "__main__":
     search_pattern_tool = agent.get_tool(SearchForPatternTool)
 
     result = agent.execute_task(
-        lambda: search_pattern_tool.apply("\n[^\n]*?Pyright", restrict_search_to_code_files=False, relative_path="src/solidlsp/ls.py")
+        lambda: search_pattern_tool.apply(
+            r"def request_parsed_files.*?\).*?\)",
+            restrict_search_to_code_files=False,
+            relative_path="src/solidlsp",
+            paths_include_glob="**/ls.py",
+        )
     )
     pprint(json.loads(result))