Uses cargo-zigbuild to target glibc 2.31 for maximum compatibility: - Raspberry Pi OS Bullseye and newer - DietPi, Armbian, Ubuntu 22.04+ Triggered by qbzd-v* tags or manual dispatch. Produces two binaries: qbzd-linux-x86_64, qbzd-linux-aarch64. Creates pre-release on tag push. cc