diff --git a/plans/TASKLIST.md b/plans/TASKLIST.md
index 0d38e8d..c85bb91 100644
--- a/plans/TASKLIST.md
+++ b/plans/TASKLIST.md
@@ -139,10 +139,10 @@
 
 ## D. HarborForge.Backend - Calendar API
 
-- [ ] BE-CAL-API-001:实现单次日程创建 API(backend only)
-  - [ ] 创建 slot
-  - [ ] 支持 job/system/event_data
-  - [ ] 接入 overlap 与 workload warning
+- [x] BE-CAL-API-001:实现单次日程创建 API(backend only)
+  - [x] 创建 slot
+  - [x] 支持 job/system/event_data
+  - [x] 接入 overlap 与 workload warning
 
 - [ ] BE-CAL-API-002:实现某日 Calendar 查询 API(backend only)
   - [ ] 返回真实 slot