b56641aaee
Tie the RPi5 submodules together: import hardware-config, docker.nix and reverse-proxy.nix; pin networking.hostName to the flake attr name so nh resolves; use U-Boot/extlinux boot (raspberry-pi-5 profile supplies kernel + firmware); enable key-only sshd and a default-deny firewall opening 22. Headless -- swaywm.nix is not imported, so swayDesktop stays off.