Api Annotation Items Destroy

GET/PATCH/DELETE /api/annotation-items/{id}/ Retrieve, update, or delete a specific annotation item (RUD from CRUD). Permission (via ObjectOwnershipMixin config in SuperAdminMixin): - Worker (assignee): Can GET/PATCH their OWN assigned items (status only) - Org Admin: Can GET/PATCH/DELETE any item in org (can re-assign) - Superadmin: Can access all items across all orgs GET: Returns full item details with all fields PATCH: - Worker: Update status, completed_at - Admin: Also update assignee_id (re-assign) DELETE: Delete item (admin only via ownership check)