- create_cloud_folder: bounded collision retry (up to 5 attempts) with keep_both_name counter suffix (D-05, D-06)
- create_cloud_folder: stale precondition marks parent folder non-fresh and returns typed stale result (D-07)
- rename_cloud_item: stale precondition marks parent folder non-fresh via folder state update (D-07)
- create_cloud_folder: reconcile-before-return upserts new folder in cloud_items and invalidates parent (T-13-26)
- rename_cloud_item: reconcile-before-return upserts renamed item and invalidates parent folder (T-13-26)
- Import upsert_cloud_item, update_folder_state, keep_both_name, CloudResource from service modules