- Cross-compila usite-agent para linux/amd64, linux/arm64, linux/arm Binarios en agent/dist/ (CGO_ENABLED=0, stripped ~6MB c/u) - GET /agent/download/:filename sirve el binario correcto con Content-Disposition attachment y validación anti path-traversal - install.sh ya apunta a /agent/download/usite-agent-linux-ARCH Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>