fix(agents): 为aiosqlite连接添加is_alive方法补丁

build: 在Makefile中添加etcd镜像拉取

Makefile

@@ -12,6 +12,7 @@ pull:
 	bash docker/pull_image.sh minio/minio:RELEASE.2023-03-20T20-16-18Z
 	bash docker/pull_image.sh ghcr.io/astral-sh/uv:0.7.2
 	bash docker/pull_image.sh nginx:alpine
+	bash docker/pull_image.sh quay.io/coreos/etcd:v3.5.5
 
 start:
 	@if [ ! -f .env ]; then \

src/agents/common/base.py

@@ -156,7 +156,11 @@ class BaseAgent:
 
     async def get_async_conn(self) -> aiosqlite.Connection:
         """获取异步数据库连接"""
-        return await aiosqlite.connect(os.path.join(self.workdir, "aio_history.db"))
+        conn = await aiosqlite.connect(os.path.join(self.workdir, "aio_history.db"))
+        # Patch: langgraph's AsyncSqliteSaver expects is_alive() method which aiosqlite may not have
+        if not hasattr(conn, "is_alive"):
+            conn.is_alive = lambda: True
+        return conn
 
     async def get_aio_memory(self) -> AsyncSqliteSaver:
         """获取异步存储实例"""