feat: queue pending transfers until designers are available

core/pydantic_ai_agent_v2.py

@@ -3,6 +3,7 @@ import re
 import hashlib
 import logging
 import time
+import json
 from typing import List, Optional, Any, Dict
 from pydantic_ai import Agent, RunContext
 from pydantic_ai.models.openai import OpenAIChatModel
@@ -236,6 +237,8 @@ class CustomerServiceBrain:
             logger.info(f"[Brain] AI处理完成，总耗时{elapsed:.1f}s")
             
             # ===== 详细日志：AI 的思考过程和工具调用 =====
+            pending_transfer_reason = ""
+            pending_transfer_error = ""
             try:
                 all_msgs = result.all_messages()
                 for idx, m in enumerate(all_msgs):
@@ -247,9 +250,20 @@ class CustomerServiceBrain:
                                 tool_name = getattr(part, 'tool_name', '?')
                                 tool_args = getattr(part, 'args', {})
                                 logger.info(f"[AI思考] 步骤{idx+1} 调用工具: {tool_name}({tool_args})")
+                                if tool_name == "transfer_to_human_tool":
+                                    if isinstance(tool_args, str):
+                                        try:
+                                            tool_args = json.loads(tool_args)
+                                        except Exception:
+                                            tool_args = {"reason": tool_args}
+                                    if isinstance(tool_args, dict):
+                                        pending_transfer_reason = str(tool_args.get("reason") or "").strip()
                             elif part_kind == 'tool-return':
                                 content = str(getattr(part, 'content', ''))[:200]
                                 logger.info(f"[AI思考] 步骤{idx+1} 工具返回: {content}")
+                                full_content = str(getattr(part, 'content', ''))
+                                if full_content.startswith("ERROR_DESIGNER_"):
+                                    pending_transfer_error = full_content
                             elif part_kind == 'text':
                                 content = str(getattr(part, 'content', ''))[:150]
                                 if content.strip():
@@ -298,7 +312,13 @@ class CustomerServiceBrain:
             return StandardResponse(
                 reply_content=reply_text,
                 need_transfer=need_transfer,
-                metadata={"acc_id": msg.acc_id, "acc_type": msg.acc_type}
+                metadata={
+                    "acc_id": msg.acc_id,
+                    "acc_type": msg.acc_type,
+                    "pending_transfer": bool(pending_transfer_error and pending_transfer_reason),
+                    "pending_transfer_reason": pending_transfer_reason,
+                    "pending_transfer_error": pending_transfer_error,
+                }
             )
 
         except Exception as e: