权限管理：接入项目级权限矩阵

新增项目级角色权限矩阵，覆盖 PM、CRA、PV、IMP、QA 等项目角色，并通过迁移表持久化各业务模块的读写权限。

后端将参与者、合同费用、物资、启动、里程碑、风险问题、监查稽查、FAQ、共享库、文件版本等接口接入矩阵校验，修复审计日志导出权限和登录 502 的依赖导入问题。

前端新增权限管理页面和项目路由权限映射，按矩阵控制导航显示、直接访问拦截、操作按钮启停，并限制管理后台仅 admin 和授权 PM 可进入。

补充后端权限归一化与接口静态测试、前端路由/权限工具/权限管理页面/工作台等回归测试。

backend/app/api/v1/studies.py

@@ -813,7 +813,7 @@ async def get_study(
 @router.patch(
     "/{study_id}",
     response_model=StudyRead,
-    dependencies=[Depends(require_study_roles(["ADMIN", "PM"]))],
+    dependencies=[Depends(require_roles(["ADMIN"]))],
 )
 async def update_study(
     study_id: uuid.UUID,
@@ -990,7 +990,7 @@ async def get_study_setup_config(
 @router.put(
     "/{study_id}/setup-config",
     response_model=StudySetupConfigRead,
-    dependencies=[Depends(require_study_roles(["ADMIN", "PM"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_roles(["ADMIN"])), Depends(require_study_not_locked())],
 )
 async def upsert_study_setup_config(
     study_id: uuid.UUID,
@@ -1068,7 +1068,7 @@ async def upsert_study_setup_config(
 @router.post(
     "/{study_id}/setup-config/publish",
     response_model=StudySetupConfigRead,
-    dependencies=[Depends(require_study_roles(["ADMIN", "PM"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_roles(["ADMIN"])), Depends(require_study_not_locked())],
 )
 async def publish_study_setup_config(
     study_id: uuid.UUID,
@@ -1221,7 +1221,7 @@ async def list_study_setup_config_versions(
 @router.post(
     "/{study_id}/setup-config/rollback",
     response_model=StudySetupConfigRead,
-    dependencies=[Depends(require_study_roles(["ADMIN", "PM"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_roles(["ADMIN"])), Depends(require_study_not_locked())],
 )
 async def rollback_study_setup_config(
     study_id: uuid.UUID,
@@ -1279,7 +1279,7 @@ async def rollback_study_setup_config(
 @router.post(
     "/{study_id}/setup-config/draft/checkout-branch",
     response_model=StudySetupConfigRead,
-    dependencies=[Depends(require_study_roles(["ADMIN", "PM"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_roles(["ADMIN"])), Depends(require_study_not_locked())],
 )
 async def checkout_study_setup_config_branch_draft(
     study_id: uuid.UUID,
@@ -1338,7 +1338,7 @@ async def checkout_study_setup_config_branch_draft(
 @router.post(
     "/{study_id}/setup-config/draft/clear",
     response_model=StudySetupConfigRead,
-    dependencies=[Depends(require_study_roles(["ADMIN", "PM"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_roles(["ADMIN"])), Depends(require_study_not_locked())],
 )
 async def clear_study_setup_config_draft(
     study_id: uuid.UUID,
@@ -1390,7 +1390,7 @@ async def clear_study_setup_config_draft(
 @router.post(
     "/{study_id}/setup-config/draft/refill",
     response_model=StudySetupConfigRead,
-    dependencies=[Depends(require_study_roles(["ADMIN", "PM"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_roles(["ADMIN"])), Depends(require_study_not_locked())],
 )
 async def refill_study_setup_config_draft(
     study_id: uuid.UUID,
@@ -1444,7 +1444,7 @@ async def refill_study_setup_config_draft(
 @router.post(
     "/{study_id}/setup-config/merge-main",
     response_model=StudySetupConfigRead,
-    dependencies=[Depends(require_study_roles(["ADMIN", "PM"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_roles(["ADMIN"])), Depends(require_study_not_locked())],
 )
 async def merge_study_setup_config_to_main(
     study_id: uuid.UUID,
@@ -1539,7 +1539,7 @@ async def merge_study_setup_config_to_main(
 @router.delete(
     "/{study_id}/setup-config/versions/{target_version}",
     status_code=status.HTTP_204_NO_CONTENT,
-    dependencies=[Depends(require_study_roles(["ADMIN", "PM"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_roles(["ADMIN"])), Depends(require_study_not_locked())],
 )
 async def delete_study_setup_config_version(
     study_id: uuid.UUID,