refactor: extract interactive menus into dedicated index scripts

- move apps menu from inline lxs.sh function to apps/index.sh
- add tools/index.sh as entry point for tools menu
- rename system-tools.sh to system-infos.sh
- simplify help text to point users to the interactive menu
- update README directory tree to reflect new structure

tools/system-infos.sh

@@ -1,6 +1,6 @@
 #!/bin/bash
 
-# LXS - System Tools
+# LXS - System Infos
 # Description: Essential system monitoring and diagnostic tools
 # Author: LXS
 # Date: 2025
@@ -10,52 +10,14 @@ LXS_RAW_BASE="${LXS_RAW_BASE:-https://git.hyko.cx/hykocx/lxs/raw/branch/main}"
 _lib=$(curl -fsSL "${LXS_RAW_BASE}/lib/common.sh") || { echo "Failed to fetch lib/common.sh" >&2; exit 1; }
 eval "$_lib"
 unset _lib
-export LXS_LOG_FILE="/tmp/lxs_system_tools.log"
+export LXS_LOG_FILE="/tmp/lxs_system_infos.log"
 
-# Run a sibling tool script. Prefers a file next to this script (installed
-# layout); falls back to downloading from LXS_RAW_BASE.
-run_sibling() {
-    local script_path=$1
-    shift
-    local script_name self_dir resolved src="${BASH_SOURCE[0]}"
-    script_name=$(basename "$script_path")
-
-    if [ -n "$src" ]; then
-        resolved=$(readlink -f "$src" 2>/dev/null) \
-            || resolved=$(realpath "$src" 2>/dev/null) \
-            || resolved="$src"
-        self_dir=$(dirname "$resolved")
-    fi
-
-    if [ -n "$self_dir" ] && [ -f "${self_dir}/${script_name}" ]; then
-        chmod +x "${self_dir}/${script_name}" 2>/dev/null || true
-        "${self_dir}/${script_name}" "$@"
-        return $?
-    fi
-
-    local temp_file exit_code
-    temp_file=$(mktemp "/tmp/lxs.${script_name%.*}.XXXXXX.sh")
-    echo -e "${PURPLE}[*] Downloading ${BOLD}${script_name}${NC}${PURPLE}...${NC}"
-    if curl -fsSL -H "Cache-Control: no-cache" -o "${temp_file}" "${LXS_RAW_BASE}/${script_path}"; then
-        echo -e "${GREEN}[✓] Downloaded${NC}"
-        chmod +x "${temp_file}"
-        "${temp_file}" "$@"
-        exit_code=$?
-        rm -f "${temp_file}"
-        return $exit_code
-    else
-        echo -e "${RED}[✗] Failed to download ${script_path}${NC}"
-        rm -f "${temp_file}"
-        return 1
-    fi
-}
-
-# Menu: System Tools
-menu_system_tools() {
+# Menu: System Infos
+menu_system_infos() {
     while true; do
         clear
         echo -e "${WHITE}╔═══════════════════════════════════════════════════════╗${NC}"
-        echo -e "${WHITE}║                   SYSTEM TOOLS                        ║${NC}"
+        echo -e "${WHITE}║                   SYSTEM INFOS                        ║${NC}"
         echo -e "${WHITE}╚═══════════════════════════════════════════════════════╝${NC}"
         echo ""
         echo -e "  ${CYAN}[1]${NC} View system informations"
@@ -66,11 +28,9 @@ menu_system_tools() {
         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 "  ${PURPLE}[9]${NC} Server Benchmark"
-        echo -e "  ${YELLOW}[10]${NC} Harden Server"
         echo -e "  ${RED}[0]${NC} Exit"
         echo ""
-        echo -e -n "${BOLD}Choice [0-10]: ${NC}"
+        echo -e -n "${BOLD}Choice [0-8]: ${NC}"
         read -r choice
         
         echo ""
@@ -306,17 +266,11 @@ menu_system_tools() {
                     fi
                 fi
                 ;;
-            9)
-                run_sibling "tools/server-benchmark.sh"
-                ;;
-            10)
-                run_sibling "tools/harden.sh"
-                ;;
             0)
                 exit 0
                 ;;
             *)
-                echo -e "${RED}[✗] Invalid option. Please select 0-10.${NC}"
+                echo -e "${RED}[✗] Invalid option. Please select 0-8.${NC}"
                 sleep 2
                 continue
                 ;;
@@ -329,5 +283,5 @@ menu_system_tools() {
     done
 }
 
-menu_system_tools
+menu_system_infos