core: update dynamic values in LXC profile on update_motd_ip (#11268)

* 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- Fixes outdated OS version display after in-place upgrades (e.g., Bookworm → Trixie)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

misc/build.func

@@ -195,9 +195,11 @@ get_current_ip() {
 #
 # - Updates /etc/motd with current container IP
 # - Removes old IP entries to avoid duplicates
+# - Regenerates /etc/profile.d/00_lxc-details.sh with dynamic OS/IP info
 # ------------------------------------------------------------------------------
 update_motd_ip() {
   MOTD_FILE="/etc/motd"
+  PROFILE_FILE="/etc/profile.d/00_lxc-details.sh"
 
   if [ -f "$MOTD_FILE" ]; then
     # Remove existing IP Address lines to prevent duplication
@@ -207,6 +209,26 @@ update_motd_ip() {
     # Add the new IP address
     echo -e "${TAB}${NETWORK}${YW} IP Address: ${GN}${IP}${CL}" >>"$MOTD_FILE"
   fi
+
+  # Update dynamic LXC details profile if values changed (e.g., after OS upgrade)
+  # Only update if file exists and is from community-scripts
+  if [ -f "$PROFILE_FILE" ] && grep -q "community-scripts" "$PROFILE_FILE" 2>/dev/null; then
+    # Get current values
+    local current_os="$(grep ^NAME /etc/os-release | cut -d= -f2 | tr -d '"') - Version: $(grep ^VERSION_ID /etc/os-release | cut -d= -f2 | tr -d '"')"
+    local current_hostname="$(hostname)"
+    local current_ip="$(hostname -I | awk '{print $1}')"
+    
+    # Update only if values actually changed
+    if ! grep -q "OS:.*$current_os" "$PROFILE_FILE" 2>/dev/null; then
+      sed -i "s|OS:.*|OS: \${GN}$current_os\${CL}\\\"|" "$PROFILE_FILE"
+    fi
+    if ! grep -q "Hostname:.*$current_hostname" "$PROFILE_FILE" 2>/dev/null; then
+      sed -i "s|Hostname:.*|Hostname: \${GN}$current_hostname\${CL}\\\"|" "$PROFILE_FILE"
+    fi
+    if ! grep -q "IP Address:.*$current_ip" "$PROFILE_FILE" 2>/dev/null; then
+      sed -i "s|IP Address:.*|IP Address: \${GN}$current_ip\${CL}\\\"|" "$PROFILE_FILE"
+    fi
+  fi
 }
 
 # ------------------------------------------------------------------------------
@@ -3310,6 +3332,7 @@ start() {
     set_std_mode
     ensure_profile_loaded
     update_script
+    update_motd_ip
     cleanup_lxc
   else
     CHOICE=$(whiptail --backtitle "Proxmox VE Helper Scripts" --title "${APP} LXC Update/Setting" --menu \
@@ -3336,6 +3359,7 @@ start() {
     esac
     ensure_profile_loaded
     update_script
+    update_motd_ip
     cleanup_lxc
   fi
 }