Add omarchy-mac-boot for aarch64 edge

The Apple Silicon boot package (Mac initramfs, in-place encryption, first
boot and the Limine activation gate) now builds from packages/omarchy-mac/boot
in omacom/omarchy-mac at a pinned commit: the recipe runs the source's tests
and install staging, and keeps only metadata, backup= and the pacman
scriptlet from the fork recipe. aarch64 and edge only; 20260925-1 upgrades
the fork's 20260921-10. It needs the Apple-gated limine-mkinitcpio-hook
1.39.0-2.

pkgbuilds/omarchy-mac-boot/.omarchy/package.json

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+{ "source": "local", "channels": ["edge"] }

pkgbuilds/omarchy-mac-boot/PKGBUILD

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+# Maintainer: Marcelo Alcantara <maralc@gmail.com>
+# Recipe from maralcbr/omarchy-pkgs asahi-quattro pkgbuilds/omarchy-mac-boot
+# (20260921-10 at 0a55baeddecf59687c32b4bd4e1dee743605c183); the payload now
+# builds from packages/omarchy-mac/boot in omacom/omarchy-mac.
+
+pkgname=omarchy-mac-boot
+# pkgver is the UTC commit date of _commit, so it sorts above the fork's
+# 20260921-N. Reset pkgrel to 1 when pkgver changes; bump it to re-pin or
+# rebuild on the same day.
+pkgver=20260925
+pkgrel=1
+pkgdesc='Apple Silicon boot support for Omarchy: initramfs, in-place encryption, first boot and Limine activation'
+arch=('aarch64')
+url='https://github.com/omacom/omarchy-mac'
+license=('MIT')
+makedepends=('git')
+provides=('omarchy-apple-boot' 'omarchy-first-boot')
+conflicts=('omarchy-apple-boot' 'omarchy-first-boot')
+replaces=('omarchy-apple-boot' 'omarchy-first-boot')
+install=omarchy-mac-boot.install
+# An exact omarchy-mac commit, never a branch.
+_commit=1855e11294c7bb82f5832822a7a1185b23ff8492
+source=("omarchy-mac::git+https://github.com/omacom/omarchy-mac.git#commit=${_commit}")
+sha256sums=('e16c9765bf0f8a8f230021850d503e11edd4579857e9239c464f4f50d1104d0a')
+
+prepare() {
+  # Tests and staging must not be able to read the surrounding desktop source.
+  rm -rf "$srcdir/boot"
+  cp -a "$srcdir/omarchy-mac/packages/omarchy-mac/boot" "$srcdir/boot"
+  [[ $(git -C "$srcdir/omarchy-mac" rev-parse HEAD) == "$_commit" ]]
+  [[ $(TZ=UTC0 git -C "$srcdir/omarchy-mac" show -s --format=%cd --date=format-local:%Y%m%d HEAD) == "$pkgver" ]]
+}
+
+check() {
+  "$srcdir/boot/test/all"
+}
+
+package() {
+  # Runtime-only, so the builder stages and tests the payload without the
+  # desktop or a boot chain. 1.39.0-2 is the first limine-mkinitcpio-hook that
+  # leaves a Mac's /boot to mkinitcpio until Limine is activated.
+  depends=('omarchy' 'limine' 'limine-mkinitcpio-hook>=1.39.0-2' 'limine-snapper-sync' 'asahi-scripts'
+           'bash' 'btrfs-progs' 'coreutils' 'cpio' 'cryptsetup' 'diffutils' 'gawk' 'gnupg' 'grep' 'gum'
+           'gzip' 'kbd' 'mkinitcpio' 'sed' 'systemd' 'util-linux')
+
+  "$srcdir/boot/install" "$pkgdir"
+  printf '%s\n' "$_commit" | install -Dm644 /dev/stdin "$pkgdir/usr/share/omarchy-mac/boot-source-revision"
+
+  # Administrator-editable: every /etc path and the initramfs helpers an image
+  # may rewrite.
+  mapfile -t backup < <(cd "$pkgdir" && find etc usr/lib/omarchy/initcpio -type f | sort)
+}

pkgbuilds/omarchy-mac-boot/README.md

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+# omarchy-mac-boot
+
+Apple Silicon boot support for Omarchy: the Mac mkinitcpio drop-ins and initcpio hooks, in-place LUKS conversion in the initramfs, vendor firmware in early boot, first boot of a Mac image, the Limine activation gate and the boot check. The source is `packages/omarchy-mac/boot/` in omacom/omarchy-mac, with its own tests. The recipe pins an exact omarchy-mac commit, copies that directory away from the surrounding desktop tree in `prepare()`, runs its `test/all` in `check()` and stages the package with its `install` script. The recipe itself holds only metadata, `backup=` and the pacman scriptlet.
+
+It follows the fork recipe in maralcbr/omarchy-pkgs (`asahi-quattro`, `pkgbuilds/omarchy-mac-boot` at 20260921-10), which carried the payload as files in the recipe.
+
+## Scope
+
+The package is aarch64-only and published to edge only. It widens to rc and stable only after M1 and M2 cold-boot qualification. It depends only on generic packages, and its only provides are the retired Apple-only names, so nothing generic can pull it onto non-Apple aarch64 machines.
+
+It requires `limine-mkinitcpio-hook` 1.39.0-2 or newer: that is the first build whose hooks leave a Mac's `/boot` to mkinitcpio until Limine is activated. With an older hook, Limine's kernel hook replaces mkinitcpio's by name, and this package's `limine-ready` gate stops it on a Mac that still boots GRUB, so a kernel update would never reach `/boot`.
+
+## Transition
+
+- It provides, conflicts with and replaces `omarchy-apple-boot` and `omarchy-first-boot`. The scriptlet moves a pending `omarchy-first-boot` marker to `omarchy-mac-first-boot`, drops the replaced unit's dangling enable link and points at a customised `90-omarchy-asahi.conf.pacsave`.
+- `pkgver` is the UTC commit date of the pin, so `20260925-1` upgrades the fork's `20260921-10` on mx-mac Macs. The files the fork shipped that the source no longer does (the image finalize tools, the upstream ARM repository key and the GRUB snapshot-menu hook) are removed by that upgrade.
+- `backup=` covers every `/etc` path and `/usr/lib/omarchy/initcpio`. It includes `/etc/default/update-m1n1`, which pins update-m1n1's device-tree order to the C locale. On a Mac that already has its own unowned copy, pacman keeps it and installs the shipped one as `.pacnew`.
+
+## Updates
+
+Updates are reviewed pins, never a branch:
+
+1. Set `_commit` to the full omarchy-mac SHA and `pkgver` to its UTC commit date (`TZ=UTC0 git show -s --format=%cd --date=format-local:%Y%m%d <sha>`); `prepare()` checks both.
+2. Reset `pkgrel` to 1 when `pkgver` changes; bump it for a second pin on the same date or a rebuild.
+3. Refresh `sha256sums` with `makepkg -g`.

pkgbuilds/omarchy-mac-boot/omarchy-mac-boot.install

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+_omarchy_mac_boot_asahi_pacsave_notice() {
+  local pacsave=/etc/mkinitcpio.conf.d/90-omarchy-asahi.conf.pacsave
+  local shipped=/etc/mkinitcpio.conf.d/90-omarchy-mac.conf
+
+  [[ -f $pacsave && -f $shipped ]] || return 0
+  cmp -s "$pacsave" "$shipped" && return 0
+
+  cat <<EOF
+==> omarchy-mac-boot: a customized 90-omarchy-asahi.conf was preserved as:
+      $pacsave
+    The active mkinitcpio drop-in is now:
+      $shipped
+    Merge any remaining local changes into the new file.
+EOF
+}
+
+_omarchy_mac_boot_migrate_legacy_first_boot() {
+  local legacy=/var/lib/omarchy/first-boot/pending
+  local successor=/var/lib/omarchy/mac-first-boot/pending
+
+  [[ -e $legacy ]] || return 0
+  install -Dm644 /dev/null "$successor"
+  rm -f "$legacy"
+  systemctl --no-reload enable omarchy-mac-first-boot.service 2>/dev/null || {
+    install -d /etc/systemd/system/multi-user.target.wants
+    ln -sfr /usr/lib/systemd/system/omarchy-mac-first-boot.service \
+      /etc/systemd/system/multi-user.target.wants/omarchy-mac-first-boot.service
+  }
+}
+
+post_install() {
+  _omarchy_mac_boot_asahi_pacsave_notice
+  _omarchy_mac_boot_migrate_legacy_first_boot
+  _omarchy_mac_boot_drop_legacy_wants
+}
+
+_omarchy_mac_boot_drop_legacy_wants() {
+  # The replaced omarchy-first-boot left its preset-enabled link behind.
+  local link=/etc/systemd/system/multi-user.target.wants/omarchy-first-boot.service
+  [[ -L $link && ! -e $link ]] && rm -f "$link"
+  return 0
+}
+
+post_upgrade() {
+  _omarchy_mac_boot_asahi_pacsave_notice
+  _omarchy_mac_boot_migrate_legacy_first_boot
+  _omarchy_mac_boot_drop_legacy_wants
+}