TEST-BE-PR-001 verify backend proposal tests

plans/TASKLIST.md

@@ -351,12 +351,13 @@
 - [ ] TEST-BE-CAL-001:补 Calendar backend 测试(backend tests only)
   - [ ] 模型测试
   - [ ] API 测试
-  - [ ] overlap / warning / materialize 测试
+  - [x] overlap / warning / materialize 测试
+  - [ ] Blocker: `HarborForge.Backend/app/schemas/calendar.py` 在 Python 3.12 + Pydantic 2.5 下因 `from __future__ import annotations` 与 `date/time/datetime` 字段名冲突触发递归建模错误，导致 `conftest.py -> app.main -> calendar router` 导入失败；已先修复 schema 类型别名问题，后续继续补 Calendar API / model tests
 
-- [ ] TEST-BE-PR-001:补 Proposal / Essential backend 测试(backend tests only)
-  - [ ] Essential CRUD
-  - [ ] Accept 生成 story tasks
-  - [ ] story restricted
+- [x] TEST-BE-PR-001:补 Proposal / Essential backend 测试(backend tests only)
+  - [x] Essential CRUD
+  - [x] Accept 生成 story tasks
+  - [x] story restricted
 
 - [ ] TEST-FE-CAL-001:补 Calendar 前端测试(frontend tests only)
   - [ ] 页面渲染