diff --git a/src/daemon/ticker.py b/src/daemon/ticker.py
index d6bfbe7..11096f2 100644
--- a/src/daemon/ticker.py
+++ b/src/daemon/ticker.py
@@ -310,7 +310,6 @@ class Ticker:
                                  project_id: str) -> List[str]:
         """扫描 pending 任务并调度"""
         queries = Queries(db_path)
-        bb = Blackboard(db_path)
         pending = queries.tasks_by_status("pending")
         dispatched: List[str] = []