diff --git a/src/blackboard/db.py b/src/blackboard/db.py
index e37036c..1d6aa5b 100644
--- a/src/blackboard/db.py
+++ b/src/blackboard/db.py
@@ -171,7 +171,7 @@ VALID_STATUSES = frozenset({
     "done", "failed", "blocked", "cancelled",
 })
 
-TERMINAL_STATUSES = frozenset({"done"})
+TERMINAL_STATUSES = frozenset()  # v3.1: 无终态，全靠 VALID_TRANSITIONS 校验
 
 # 手动状态（不参与聚合推导）
 MANUAL_STATUSES = frozenset({"cancelled", "paused"})