refactor: extract post-ops helpers from pydantic agent

core/ai_reply_flow.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 from typing import TYPE_CHECKING, Any
+from core.post_ops import negotiation_strategy_reply
 
 if TYPE_CHECKING:
     from core.pydantic_ai_agent import AgentDeps, ConversationState, CustomerMessage, CustomerServiceAgent
@@ -69,7 +70,7 @@ async def execute_ai_turn(
     agent.message_histories[message.from_id] = result.all_messages()[-30:]
     reply_text = agent._colloquialize_reply(agent._normalize_reply_text(result.output))
 
-    strategy_reply = agent._negotiation_strategy_reply(message.msg, state)
+    strategy_reply = negotiation_strategy_reply(message.msg, state)
     if strategy_reply:
         reply_text = strategy_reply