Settings -> Data picks the PC backup folder (e.g. a cloud-sync folder; old folders stay listed) and turns on
automatic snapshots (off by default): Quest launchers snapshot the saves when the game closes, under the launch lock,
keeping the newest three changed ones on the Frame, and FramePort imports them as automatic backups when it connects.
Agent v101. Checked on the Frame with BlazeRush (snapshot per close, one import per snapshot).
Agent v94: _backup_saves / _restore_saves stream a tar.gz of a game's internal
and external Android storage over the SSH exec channel (caches, IL2CPP and
shader caches, FrameBridge files, videos/OBBs and files over 64 MiB left out;
manifest with sha256 last). File work runs in podman unshare, holds the
launch lock and is refused while the game runs. Restore treats the archive as
untrusted (confined paths, no links/devices, size limits, hashes checked,
staged first), keeps the replaced saves as saves-before-restore.tar.gz (undo)
and puts them back if swapping fails.
PC: install/saves.py (save-backups/<pkg>/, keep 10 by default), game menu
section Saves (back up, restore..., open backups folder), Frame page
"Back up all saves", back up before deleting saves on uninstall, Settings ->
Data keep count, CLI frameport saves backup|list|restore|undo.