From 254cb849dfb1132efea8f88f14dbc23b11a5a7aa Mon Sep 17 00:00:00 2001
From: quan0715 <quan787887@gmail.com>
Date: Sat, 7 Feb 2026 09:05:15 +0800
Subject: [PATCH] Fix duplicate SummarizationMiddleware error

create_deep_agent already adds SummarizationMiddleware when
checkpointer is enabled. Remove manual addition to avoid duplicate.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
---
 agent/deep_agent.py | 13 ++-----------
 1 file changed, 2 insertions(+), 11 deletions(-)

diff --git a/agent/deep_agent.py b/agent/deep_agent.py
index c6e1a66..ac23e69 100644
--- a/agent/deep_agent.py
+++ b/agent/deep_agent.py
@@ -148,17 +148,8 @@ def _agent_init(self):
             f"持久化: PostgreSQL (checkpointer + store)"
         )
 
-        # 準備 middleware 列表
-        # 啟用 SummarizationMiddleware 來自動壓縮過長的對話歷史
-        middleware = [
-            SummarizationMiddleware(
-                model=self.model,
-                # 當訊息數量超過 50 條時觸發壓縮
-                trigger=("messages", 50),
-                # 壓縮後保留最近的 20 條訊息
-                keep=("messages", 20),
-            )
-        ]
+        # middleware 由 create_deep_agent 在啟用 checkpointer 時自動管理
+        middleware = []
 
         self.agent = create_deep_agent(
             model=self.model,