diff --git a/src/daemon/ticker.py b/src/daemon/ticker.py
index 46908a8..50c4b87 100644
--- a/src/daemon/ticker.py
+++ b/src/daemon/ticker.py
@@ -490,6 +490,24 @@ class Ticker:
 
         return reclaimed
 
+    def _check_recent_routing(self, db_path: Path, task_id: str,
+                                action_type: str) -> bool:
+        """检查最近 5 分钟内是否已 dispatch 过指定类型的路由（防重复）"""
+        try:
+            conn = get_connection(db_path)
+            try:
+                row = conn.execute(
+                    "SELECT COUNT(*) as cnt FROM routing_decisions "
+                    "WHERE task_id=? AND outcome='dispatched' "
+                    "AND created_at > datetime('now', '-5 minutes')",
+                    (task_id,),
+                ).fetchone()
+                return row["cnt"] > 0 if row else False
+            finally:
+                conn.close()
+        except Exception:
+            return False
+
     # ------------------------------------------------------------------
     # 手动 tick（API 端点触发）
     # ------------------------------------------------------------------