refactor: unify core pipeline logging with cs_agent logger

core/context_helpers.py

@@ -1,9 +1,12 @@
 from __future__ import annotations
 
 import os
+import logging
 from collections import Counter
 from datetime import datetime
 
+logger = logging.getLogger("cs_agent")
+
 
 def calc_avg_complexity(complexity_history: list) -> str:
     """计算平均复杂度。"""
@@ -153,7 +156,7 @@ def get_customer_profile_context(agent, customer_id: str) -> str:
 
         return "\n".join(lines)
     except Exception as e:
-        print(f"[Agent] 获取客户画像失败: {e}")
+        logger.exception("[Agent] 获取客户画像失败: %s", e)
         return ""