- Switch from deprecated .list format to .sources (DEB822)
- Use .asc key format instead of gpg --dearmor
- Use apt-get instead of apt for scripts (avoid CLI warning)
- Fix compatibility with Debian Trixie (testing)
- Change port binding from Tailscale IP to 127.0.0.1:9091
- Add tailscale serve to expose WebUI via HTTPS on tailnet
- Update MOTD and final message to reflect new access method