refactor: unify core pipeline logging with cs_agent logger

core/ai_reply_flow.py

@@ -1,8 +1,11 @@
 from __future__ import annotations
 
+import logging
 from typing import TYPE_CHECKING, Any
 from core.post_ops import negotiation_strategy_reply
 
+logger = logging.getLogger("cs_agent")
+
 if TYPE_CHECKING:
     from core.pydantic_ai_agent import AgentDeps, ConversationState, CustomerMessage, CustomerServiceAgent
 
@@ -124,13 +127,14 @@ async def execute_ai_turn(
         for part in getattr(msg, "parts", []):
             part_type = type(part).__name__
             if "ToolCall" in part_type:
-                print(
-                    f"{agent.C_TOOL}[THINK/TOOL_CALL]{agent.C_RESET} "
-                    f"{getattr(part, 'tool_name', '')}({getattr(part, 'args', '')})"
+                logger.info(
+                    "[THINK/TOOL_CALL] %s(%s)",
+                    getattr(part, "tool_name", ""),
+                    getattr(part, "args", ""),
                 )
             elif "ToolReturn" in part_type:
                 ret = str(getattr(part, "content", ""))[:120]
-                print(f"{agent.C_TOOL}[THINK/TOOL_RETURN]{agent.C_RESET} {ret}")
+                logger.info("[THINK/TOOL_RETURN] %s", ret)
 
-    print(f"{agent.C_THINK}[THINK/RAW_OUTPUT]{agent.C_RESET} {repr(reply_text)}")
+    logger.info("[THINK/RAW_OUTPUT] %r", reply_text)
     return reply_text