# W-043 Status

status: done
task: 自动保存和快照策略

`AutosaveScheduler` debounces a dirty project and submits the current engine
buffer through StorageWorker after 1.5 seconds without triggering a download.
The React Save button reuses the same persistence path before exporting a
download. A browser regression confirms the dirty marker returns to saved.

Every ten commands and every explicit save now retain a SHA-256 verified blend snapshot. The
StorageWorker enforces count and total-byte limits and can list/read retained revisions. Large-file
writes remain Worker-isolated and never block the renderer thread.