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- stream ZIP exports and browser-managed downloads through short-lived single-use tickets instead of buffering whole archives - upload raw ZIP files to private temporary storage and enforce configurable archive and expanded-size limits with bounded reads and CRC checks - include image notes in schema 2 backups, offer explicitly marked lightweight exports, and retain schema 1 restore support - stage restored assets and use database transactions with rollback cleanup while preserving login credentials and append semantics - align proxy limits, timeouts, and optional capacity settings without changing existing database or logo mounts