chore: lint

core/framework/graph/event_loop_node.py

@@ -980,7 +980,8 @@ class EventLoopNode(NodeProtocol):
                     success=False,
                     error=(
                         f"Node stalled: {self._config.stall_detection_threshold} similar "
-                        f"responses ({self._config.stall_similarity_threshold * 100:.0f}+ threshold)"
+                        f"responses ({self._config.stall_similarity_threshold * 100:.0f}+"
+                        " threshold)"
                     ),
                     output=accumulator.to_dict(),
                     tokens_used=total_input_tokens + total_output_tokens,

core/framework/mcp/agent_builder_server.py

@@ -2592,7 +2592,8 @@ def initialize_agent_package(
                 "errors": [
                     f"Invalid agent_name '{agent_name}'. Must be snake_case: "
                     "lowercase letters, numbers, underscores. "
-                    "Must start with a letter. Examples: 'my_agent', 'research_bot', 'data_processor'"
+                    "Must start with a letter. Examples: 'my_agent', 'research_bot',"
+                    " 'data_processor'"
                 ],
             }
         )