Persist vm.swappiness=100 in /etc/sysctl.d/99-zram.conf and delete the
unused /swapfile. New NEON-CUSTOMIZATIONS.md covers keyd, USB-C DP
modules, HWE-edge kernel, tmpfs /tmp and localepurge, r8152 DKMS
history, tailscale, and third-party repos/tools.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
