* feat(build.func): update dynamic values in LXC profile on update_motd_ip
- Updates only OS/Hostname/IP lines in /etc/profile.d/00_lxc-details.sh
- Checks if values changed before updating (avoids unnecessary I/O)
- Preserves user customizations (app name, GitHub link, custom lines)
- Only updates if file exists and contains 'community-scripts' marker
- Fixes outdated OS version display after in-place upgrades (e.g., Bookworm → Trixie)
- Now reads OS name/version from /etc/os-release at login time
Fixes community-scripts/ProxmoxVE issue with static MOTD after OS upgrade
* add update_motd_ip in routine
ff4f5f6a0a