diff --git a/HarborForge.Backend b/HarborForge.Backend
index 70f343f..a94ef43 160000
--- a/HarborForge.Backend
+++ b/HarborForge.Backend
@@ -1 +1 @@
-Subproject commit 70f343fbac92feaac499a2b6406ca4c04d5c8cba
+Subproject commit a94ef439741ab6ac6465873f11edcf0d637cc354
diff --git a/plans/TASKLIST.md b/plans/TASKLIST.md
index 1d5c160..658a3c7 100644
--- a/plans/TASKLIST.md
+++ b/plans/TASKLIST.md
@@ -186,10 +186,10 @@
   - [x] 超时无心跳 -> Offline
   - [x] API 配额错误 -> Exhausted
 
-- [ ] BE-AGT-003:实现多 slot 竞争处理(backend only)
-  - [ ] 选最高 priority 执行
-  - [ ] 其余 slot 标记 Deferred
-  - [ ] Deferred slot 自动 priority += 1
+- [x] BE-AGT-003:实现多 slot 竞争处理(backend only)
+  - [x] 选最高 priority 执行
+  - [x] 其余 slot 标记 Deferred
+  - [x] Deferred slot 自动 priority += 1
 
 - [ ] BE-AGT-004:实现 Exhausted 恢复时间解析(backend only)
   - [ ] 解析 retry-after / reset in / resets at