Initial implementation of breadpaper

CLI tool that sets a wallpaper with awww, generates a pywal colour
palette, and reloads bread-theme to recolour all running bread GTK apps.
Includes CI workflows, bakery metadata, and Arch PKGBUILD.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

packaging/arch/PKGBUILD

@@ -0,0 +1,33 @@
+# Maintainer: Breadway <rileyhorsham@gmail.com>
+
+pkgname=breadpaper
+pkgver=0.1.0
+pkgrel=1
+pkgdesc="Wallpaper manager for the bread desktop"
+arch=('x86_64')
+url="https://github.com/Breadway/breadpaper"
+license=('MIT')
+options=(!lto !debug)
+depends=('glibc' 'python-pywal')
+optdepends=(
+  'awww: Wayland wallpaper daemon'
+)
+makedepends=('rust' 'cargo')
+source=("${pkgname}-${pkgver}.tar.gz")
+sha256sums=('SKIP')
+
+build() {
+  cd "${srcdir}/${pkgname}-${pkgver}"
+  cargo build --release --locked
+}
+
+check() {
+  cd "${srcdir}/${pkgname}-${pkgver}"
+  cargo test --release --locked
+}
+
+package() {
+  cd "${srcdir}/${pkgname}-${pkgver}"
+  install -Dm755 target/release/breadpaper "${pkgdir}/usr/bin/breadpaper"
+  install -Dm644 LICENSE "${pkgdir}/usr/share/licenses/${pkgname}/LICENSE"
+}