ci: publish aarch64 pacman package artifacts

packaging/arch/PKGBUILD.prebuilt

@@ -0,0 +1,23 @@
+# CI package recipe for a prebuilt Souveraine aarch64 binary.
+#
+# The runner cross-compiles first, then makepkg assembles this package.  This
+# deliberately avoids compiling on the phone and keeps its agent data outside
+# pacman's ownership.
+pkgname=souveraine
+pkgver="${SOUVERAINE_PKGVER:?CI must set SOUVERAINE_PKGVER}"
+pkgrel=1
+pkgdesc="Sovereign agent substrate — server, TUI, surfaces"
+arch=('aarch64')
+url="https://gitea.wiuf.net/Fimeg/souveraine"
+license=('MIT')
+depends=('gcc-libs')
+options=('!strip')
+source=('souveraine-aarch64' 'souveraine.service' 'LICENSE')
+sha256sums=('SKIP' 'SKIP' 'SKIP')
+
+package() {
+    install -Dm755 "$srcdir/souveraine-aarch64" "$pkgdir/usr/bin/souveraine"
+    sed 's|%h/.local/bin/souveraine|/usr/bin/souveraine|' "$srcdir/souveraine.service" \
+        | install -Dm644 /dev/stdin "$pkgdir/usr/lib/systemd/user/souveraine.service"
+    install -Dm644 "$srcdir/LICENSE" "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+}