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/monitoring_visit_issues.py

@@ -11,7 +11,7 @@ from openpyxl import Workbook, load_workbook
 from sqlalchemy.exc import IntegrityError
 from sqlalchemy.ext.asyncio import AsyncSession
 
-from app.core.deps import get_current_user, get_db_session, require_study_member, require_study_not_locked, require_study_roles
+from app.core.deps import get_current_user, get_db_session, require_study_not_locked, require_study_permission
 from app.crud import audit as audit_crud
 from app.crud import monitoring_visit_issue as issue_crud
 from app.crud import site as site_crud
@@ -332,7 +332,7 @@ def _normalize_file_rows(filename: str, content: bytes) -> list[dict[str, object
 @router.get(
     "/issues",
     response_model=list[MonitoringVisitIssueRead],
-    dependencies=[Depends(require_study_member())],
+    dependencies=[Depends(require_study_permission("monitoring_audit", "read"))],
 )
 async def list_monitoring_visit_issues(
     study_id: uuid.UUID,
@@ -382,7 +382,7 @@ async def list_monitoring_visit_issues(
     "/issues",
     response_model=MonitoringVisitIssueRead,
     status_code=status.HTTP_201_CREATED,
-    dependencies=[Depends(require_study_roles(["PM", "CRA"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_study_permission("monitoring_audit", "write")), Depends(require_study_not_locked())],
 )
 async def create_monitoring_visit_issue(
     study_id: uuid.UUID,
@@ -421,7 +421,7 @@ async def create_monitoring_visit_issue(
 @router.get(
     "/issues/export",
     response_class=StreamingResponse,
-    dependencies=[Depends(require_study_member())],
+    dependencies=[Depends(require_study_permission("monitoring_audit", "read"))],
 )
 async def export_monitoring_visit_issues(
     study_id: uuid.UUID,
@@ -553,7 +553,7 @@ async def export_monitoring_visit_issues(
 @router.get(
     "/issues/{issue_id}",
     response_model=MonitoringVisitIssueRead,
-    dependencies=[Depends(require_study_member())],
+    dependencies=[Depends(require_study_permission("monitoring_audit", "read"))],
 )
 async def get_monitoring_visit_issue(
     study_id: uuid.UUID,
@@ -570,7 +570,7 @@ async def get_monitoring_visit_issue(
 @router.patch(
     "/issues/{issue_id}",
     response_model=MonitoringVisitIssueRead,
-    dependencies=[Depends(require_study_roles(["PM", "CRA"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_study_permission("monitoring_audit", "write")), Depends(require_study_not_locked())],
 )
 async def update_monitoring_visit_issue(
     study_id: uuid.UUID,
@@ -625,7 +625,7 @@ async def update_monitoring_visit_issue(
 @router.delete(
     "/issues/{issue_id}",
     status_code=status.HTTP_204_NO_CONTENT,
-    dependencies=[Depends(require_study_roles(["PM", "CRA"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_study_permission("monitoring_audit", "write")), Depends(require_study_not_locked())],
 )
 async def delete_monitoring_visit_issue(
     study_id: uuid.UUID,
@@ -655,7 +655,7 @@ async def delete_monitoring_visit_issue(
 @router.post(
     "/issues/import",
     response_model=MonitoringVisitIssueImportSummary,
-    dependencies=[Depends(require_study_roles(["PM", "CRA"])), Depends(require_study_not_locked())],
+    dependencies=[Depends(require_study_permission("monitoring_audit", "write")), Depends(require_study_not_locked())],
 )
 async def import_monitoring_visit_issues(
     study_id: uuid.UUID,