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iso: add bos-rescue, first-boot probe, optional Calamares refresh

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Live-ISO bos-rescue finds the installed btrfs @ and ESP, then offers
arch-chroot and/or the same GRUB NVRAM + --removable sequence as
post-install.sh. Recovery is grub-btrfs or this reinstall — GRUB pins
rootflags=subvol=@.

bos-first-boot runs once after the first graphical login: NVIDIA offer
file + notify (no driver install), VM-without-GL notify, HiDPI hint
file (never rewrites monitors.json).

Re-enable the Calamares packages module as a refresh-only step with
skip_if_no_internet and ignore_update_db_error so offline installs
cannot abort on pacman -Sy.
This commit is contained in:
Breadway 2026-08-15 23:59:38 +08:00
parent fd385bafae
commit 744f18cd90
11 changed files with 838 additions and 18 deletions
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16
docs/hardware.md
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@ -8,6 +8,15 @@ BOS ships the generic **Mesa** stack. AMD and Intel work out of the box.
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.
On first graphical login, `bos-first-boot` probes `lspci` / `/proc` and,
if an NVIDIA GPU is present, writes `~/.local/state/bos/nvidia-offer.json`
and notifies that the proprietary driver is not on the ISO. It does **not**
install anything. bos-settings can grow a panel that reads that file later.
The same probe leaves a HiDPI hint at `~/.local/state/bos/hidpi-hint.json`
when scale > 1 or the panel is dense; it never rewrites `monitors.json`.
A VM without `/dev/dri` gets a notification only.
## Recovery
An update that breaks the system is recovered from the **GRUB "snapshots"
@ -17,5 +26,8 @@ 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.
If the system will not boot (lost EFI entry / broken GRUB), boot the live
ISO and run `sudo bos-rescue`. It mounts `@` + the ESP and offers the same
`grub-install` NVRAM + `--removable` sequence as `post-install.sh`.
A/B root swapping is not implemented. See the README Recovery section.