P0-1: 删除 docker-compose-override.yml + deploy-server 两份 workers=2→1（预防性修复，服务器根 compose 已是 workers=1）

debug_neo4j.py

@@ -0,0 +1,27 @@
+import asyncio
+import sys
+sys.path.insert(0, '/app')
+
+async def test():
+    from app.services.graph_query_service import get_graph_query_service
+    from app.services.neo4j_client import get_neo4j_client
+    import logging
+    logging.basicConfig(level=logging.DEBUG)
+
+    neo4j_client = await get_neo4j_client()
+    graph_service = await get_graph_query_service(neo4j_client)
+
+    keyword = "打印机驱动安装"
+    print(f"Querying keyword: {keyword}")
+
+    # 直接调用 Neo4j 查询
+    try:
+        data = await neo4j_client.execute_read_query(
+            """MATCH (i:Issue) WHERE i.name CONTAINS $keyword RETURN i.uuid AS uuid, i.name AS name, i.category AS category LIMIT 5""",
+            {"keyword": keyword}
+        )
+        print(f"Raw data: {data}")
+    except Exception as e:
+        print(f"Error: {e}")
+
+asyncio.run(test())