feat: implement full RBAC role-based access control
Backend:
- deps.py: add require_admin, require_manager, require_labeler, require_guest_or_above
- user.py: all write endpoints require admin
- datasource.py: write/sync endpoints require admin
- metadata.py: sync endpoint requires admin
- classification.py: category/rule write requires admin; results query requires guest+ with data isolation
- project.py: GET requires manager with created_by filtering; DELETE checks ownership
- task.py: my-tasks requires labeler with assignee_id filtering; create-task requires manager
- dashboard.py: requires guest_or_above
- report.py: requires guest_or_above
- project_service: list_projects adds created_by filter; list_results adds project_ids filter
Frontend:
- stores/user.ts: add hasRole, hasAnyRole, isAdmin, isManager, isLabeler, isSuperadmin
- router/index.ts: add roles to route meta; beforeEach checks role permissions
- Layout.vue: filter menu routes by user roles
- System.vue: hide add/edit/delete buttons for non-admins
- DataSource.vue: hide add/edit/delete/sync buttons for non-admins
- Project.vue: hide add/delete buttons for non-admins
hiderfong
8b2bc84399