Add AUR package (PKGBUILD) with systemd service and test script

- deploy/aur/PKGBUILD: builds from source, installs binary + man page + systemd unit
- deploy/aur/.SRCINFO: AUR metadata
- deploy/aur/test-aur.sh: tests PKGBUILD in Docker Arch container
- Supports x86_64, aarch64, armv7h architectures

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

deploy/aur/PKGBUILD

@@ -0,0 +1,58 @@
+# Maintainer: Siavash Sameni <manwe at manko dot yoga>
+pkgname=btest-rs
+pkgver=0.6.0
+pkgrel=1
+pkgdesc="MikroTik Bandwidth Test (btest) server and client with EC-SRP5 auth"
+arch=('x86_64' 'aarch64' 'armv7h')
+url="https://github.com/manawenuz/btest-rs"
+license=('MIT' 'Apache-2.0')
+depends=()
+makedepends=('cargo')
+source=("$pkgname-$pkgver.tar.gz::https://github.com/manawenuz/btest-rs/archive/refs/tags/v$pkgver.tar.gz")
+sha256sums=('SKIP')
+
+prepare() {
+    cd "$pkgname-$pkgver"
+    export RUSTUP_TOOLCHAIN=stable
+    cargo fetch --locked --target "$(rustc -vV | sed -n 's/host: //p')"
+}
+
+build() {
+    cd "$pkgname-$pkgver"
+    export RUSTUP_TOOLCHAIN=stable
+    export CARGO_TARGET_DIR=target
+    cargo build --frozen --release
+}
+
+package() {
+    cd "$pkgname-$pkgver"
+    install -Dm755 "target/release/btest" "$pkgdir/usr/bin/btest"
+    install -Dm644 "LICENSE" "$pkgdir/usr/share/licenses/$pkgname/LICENSE"
+    install -Dm644 "docs/man/btest.1" "$pkgdir/usr/share/man/man1/btest.1"
+    install -Dm644 "README.md" "$pkgdir/usr/share/doc/$pkgname/README.md"
+
+    # systemd service
+    install -Dm644 /dev/stdin "$pkgdir/usr/lib/systemd/system/btest.service" <<EOF
+[Unit]
+Description=MikroTik Bandwidth Test Server (btest-rs)
+After=network-online.target
+Wants=network-online.target
+
+[Service]
+Type=simple
+ExecStart=/usr/bin/btest -s
+Restart=always
+RestartSec=5
+DynamicUser=yes
+NoNewPrivileges=yes
+ProtectSystem=strict
+ProtectHome=yes
+PrivateTmp=yes
+AmbientCapabilities=CAP_NET_BIND_SERVICE
+CapabilityBoundingSet=CAP_NET_BIND_SERVICE
+LimitNOFILE=65535
+
+[Install]
+WantedBy=multi-user.target
+EOF
+}