fix lint issues

Author: jsonbailey

packages/ai-providers/server-ai-langchain/src/ldai_langchain/langgraph_agent_graph_runner.py

@@ -79,9 +79,7 @@ def handle_traversal(node: AgentGraphNode, ctx: dict) -> None:
                         for t in tool_defs
                         if t.get('name', '') in tools_ref
                     ]
-                    if tool_fns:
-                        lc_model = lc_model.bind_tools(tool_fns)
-                    model = lc_model
+                    model = lc_model.bind_tools(tool_fns) if tool_fns else lc_model
 
                 def invoke(state: WorkflowState) -> WorkflowState:
                     exec_path.append(node_key)

packages/ai-providers/server-ai-openai/src/ldai_openai/openai_agent_graph_runner.py

@@ -14,6 +14,7 @@ def _to_openai_name(name: str) -> str:
     """Convert a hyphenated tool/node name to an underscore-separated OpenAI function name."""
     return name.replace('-', '_')
 
+
 def _build_native_tool_map() -> dict:
     try:
         from agents import (