refactor(nav): use exit code 75 to suppress redundant "Press Enter" prompt

- app submenus return 75 on back/exit instead of 0
- index menus capture child exit code and skip pause when rc is 75
- applies to apps (coolify, pterodactyl, uptime-kuma, cloudpanel, proxmox) and tools (server-benchmark, system-infos) indexes

tools/system-infos.sh

@@ -16,21 +16,21 @@ export LXS_LOG_FILE="/tmp/lxs_system_infos.log"
 menu_system_infos() {
     while true; do
         clear
-        echo -e "${WHITE}╔═══════════════════════════════════════════════════════╗${NC}"
-        echo -e "${WHITE}║                   SYSTEM INFOS                        ║${NC}"
-        echo -e "${WHITE}╚═══════════════════════════════════════════════════════╝${NC}"
+        show_box_top "SYSTEM INFOS"
         echo ""
-        echo -e "  ${CYAN}[1]${NC} View system informations"
-        echo -e "  ${CYAN}[2]${NC} Check disk space"
-        echo -e "  ${CYAN}[3]${NC} Check memory usage"
-        echo -e "  ${CYAN}[4]${NC} Check CPU load"
-        echo -e "  ${CYAN}[5]${NC} Check network"
-        echo -e "  ${CYAN}[6]${NC} View system logs (last 50 lines)"
-        echo -e "  ${CYAN}[7]${NC} Show top resource-consuming processes"
-        echo -e "  ${CYAN}[8]${NC} Check disk health (SMART)"
-        echo -e "  ${RED}[0]${NC} Exit"
+        show_menu_item "1" "View system informations"
+        show_menu_item "2" "Check disk space"
+        show_menu_item "3" "Check memory usage"
+        show_menu_item "4" "Check CPU load"
+        show_menu_item "5" "Check network"
+        show_menu_item "6" "View system logs (last 50 lines)"
+        show_menu_item "7" "Show top resource-consuming processes"
+        show_menu_item "8" "Check disk health (SMART)"
+        show_menu_item "0" "Exit" "" exit
         echo ""
-        echo -e -n "${BOLD}Choice [0-8]: ${NC}"
+        show_box_bottom
+        echo ""
+        show_prompt
         read -r choice
         
         echo ""
@@ -39,9 +39,7 @@ menu_system_infos() {
             1)
                 # View system informations
                 clear
-                echo -e "${WHITE}╔═══════════════════════════════════════════════════════╗${NC}"
-                echo -e "${WHITE}║               SYSTEM INFORMATION                      ║${NC}"
-                echo -e "${WHITE}╚═══════════════════════════════════════════════════════╝${NC}"
+                show_box_top "SYSTEM INFORMATION"
                 echo ""
                 
                 echo -e "${CYAN}${BOLD}Operating System:${NC}"
@@ -267,7 +265,7 @@ menu_system_infos() {
                 fi
                 ;;
             0)
-                exit 0
+                exit 75
                 ;;
             *)
                 echo -e "${RED}[✗] Invalid option. Please select 0-8.${NC}"