Point os-release at the bos repo and issues; drop Arch privacy terms. Take a best-effort snapper pre snapshot before pacman and bakery. Pin current stable bakery versions so CI fetches the same bits per commit. Autostart breadpaper/breadshot listen behind command -v. Document signed-repo setup and Mesa/NVIDIA/grub-btrfs recovery.
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Hardware and recovery
GPUs
BOS ships the generic Mesa stack. AMD and Intel work out of the box.
NVIDIA is unsupported. The proprietary driver is not included, NVIDIA
firmware is not on the image, and there is no Hyprland NVIDIA env wiring.
Installing nvidia / nvidia-utils after the fact is not a product path.
Recovery
An update that breaks the system is recovered from the GRUB "snapshots"
submenu (grub-btrfs), not snapper rollback.
BOS GRUB pins rootflags=subvol=@. snapper rollback swaps the default
subvolume; the installed grub.cfg will still boot @. Pick the grub-btrfs
entry so the kernel command line matches the snapshot you want.
A/B root swapping is not implemented. See the README Recovery section for the "system will not boot" GRUB/EFI repair path.