Before it repairs a damaged file, the backend keeps a copy of it as a
system snapshot, and the repair notice points to the version history to
find it. The History panel listed that copy among the autosaves, so it
could not be told apart.
The History panel lists the copies kept before a repair as their own
entry per day, "Before automatic repair, <date>", above that day's
autosaves, and the preview of such a copy uses the same label.
- Ending a drag inside the frame the shapes already belong to sent an
empty reparent save and bumped the revision. The move commits only
when some shape changes parent.
- When a user restored a version, other sessions reloaded the file with
no notice. They now see a dialog naming who restored which version
(by its name, else its date), saying that later changes are no longer
in the file and, when they had changes not saved yet, that those were
lost.
- Exports drawn in the browser (PDF, SVG, and PNG when the WASM renderer
draws it) and duplicating a file from the dashboard started at once,
so an export could show changes a pending save then rejected, and a
copy could miss queued edits. Both wait for the file's pending saves.
A client export warns that it includes unsaved changes; a copy warns
that it misses them.
