souveraine-shell: package the composed quickshell config

CI stages deploy.sh in a scratch HOME and tars the composed tree
dereferenced, then makepkg ships it to /etc/xdg/quickshell/souveraine
on both arches — the shell becomes package-owned, and a writable
~/.config copy keeps shadowing it.

packaging/arch/PKGBUILD.shell.prebuilt

@@ -0,0 +1,25 @@
+# CI package recipe for the Souveraine quickshell config.
+#
+# surfaces/quickshell/deploy.sh composes the shell into a scratch HOME
+# (repo files symlinked in, ii dirs borrowed from the ii-base pin), and CI
+# tars that tree dereferenced. This package ships the composed result to
+# /etc/xdg/quickshell/souveraine, so a device gets the shell through pacman
+# instead of hand-copied files. A writable copy in ~/.config/quickshell
+# shadows it (the live overlay stays deploy.sh's).
+pkgname=souveraine-shell
+pkgver="${SOUVERAINE_PKGVER:?CI must set SOUVERAINE_PKGVER}"
+pkgrel=1
+pkgdesc="The Souveraine quickshell config, composed and package-owned"
+arch=('any')
+url='https://gitea.wiuf.net/Fimeg/souveraine'
+license=('GPL-3.0-or-later')
+depends=('quickshell')
+options=('!debug')
+source=('souveraine-shell-config.tar.zst' 'LICENSE')
+b2sums=('SKIP' 'SKIP')
+package() {
+  install -d "$pkgdir/etc/xdg/quickshell/souveraine"
+  tar -xzf "$srcdir/souveraine-shell-config.tar.zst" \
+    -C "$pkgdir/etc/xdg/quickshell/souveraine"
+  install -Dm644 "$srcdir/LICENSE" "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+}