整合旧图和新图：添加完整的记忆检索、总结和完成流程

backend/app/main_graph/nodes/llm_call.py

@@ -126,6 +126,9 @@ def create_llm_call_node(llm, tools: list):
                 debug(f"📋 [LLM统计] 详细用量: {token_usage}")
             debug("="*80 + "\n")
 
+            # 检查是否有工具调用
+            has_tool_calls = hasattr(response, 'tool_calls') and len(response.tool_calls) > 0
+            
             result = {
                 "messages": [response],
                 "llm_calls": getattr(state, 'llm_calls', 0) + 1,
@@ -134,7 +137,8 @@ def create_llm_call_node(llm, tools: list):
                 "turns_since_last_summary": getattr(state, 'turns_since_last_summary', 0) + 1,
                 "final_result": response.content,
                 "success": True,
-                "current_phase": "done"
+                "current_phase": "done",
+                "has_tool_calls": has_tool_calls
             }
 
             log_state_change("llm_call", {**state, **result}, "离开")