improve: Auto-detect web server document root for ImunifyAV standalone UI path

- Detect Apache (apache2ctl -S) and extract default document root
- Detect Nginx (nginx -T) and extract default document root
- Use detected root + /imunifyav as default suggestion
- Fall back to /var/www/html/imunifyav if no web server detected
- Still allows user to manually override the suggested path
- Eliminates need for hardcoded default paths

modules/security/malware-scanner.sh

@@ -412,13 +412,36 @@ install_all_scanners() {
                 echo -e "  ${GREEN}✓${NC} integration.conf already exists with ui_path: $imav_ui_path"
                 echo "    Proceeding with existing configuration."
             else
-                # Prompt user for ui_path with sensible default
+                # Auto-detect web server document root
+                local imav_default_path="/var/www/html/imunifyav"
+
+                # Try Apache
+                if command -v apache2ctl &>/dev/null; then
+                    local apache_root=$(apache2ctl -S 2>/dev/null | grep "^\*:" | head -1 | awk '{print $NF}' | sed 's/*://' || echo "")
+                    if [ -n "$apache_root" ] && [ -d "$apache_root" ]; then
+                        imav_default_path="$apache_root/imunifyav"
+                    fi
+                elif command -v httpd &>/dev/null; then
+                    local httpd_root=$(httpd -S 2>/dev/null | grep "^\*:" | head -1 | awk '{print $NF}' | sed 's/*://' || echo "")
+                    if [ -n "$httpd_root" ] && [ -d "$httpd_root" ]; then
+                        imav_default_path="$httpd_root/imunifyav"
+                    fi
+                fi
+
+                # Try Nginx if Apache not found
+                if [ "$imav_default_path" = "/var/www/html/imunifyav" ] && command -v nginx &>/dev/null; then
+                    local nginx_root=$(nginx -T 2>/dev/null | grep "root " | head -1 | awk '{print $NF}' | sed 's/;//' || echo "")
+                    if [ -n "$nginx_root" ] && [ -d "$nginx_root" ]; then
+                        imav_default_path="$nginx_root/imunifyav"
+                    fi
+                fi
+
+                # Prompt user for ui_path with detected default
                 echo "  Enter the web server document root path for the ImunifyAV UI."
                 echo "  This directory will be served by your web server (Apache/Nginx)."
-                echo "  Example: /var/www/html/imunifyav"
                 echo "  Enter 0 to cancel ImunifyAV installation."
                 echo ""
-                read -p "  ui_path [/var/www/html/imunifyav]: " imav_ui_input
+                read -p "  ui_path [$imav_default_path]: " imav_ui_input
 
                 # Handle cancel
                 if [ "$imav_ui_input" = "0" ]; then
@@ -428,9 +451,9 @@ install_all_scanners() {
                 fi
 
                 if [ "$imav_is_standalone" -ne 2 ]; then
-                    # Apply default if blank
+                    # Apply default if blank, otherwise use user input
                     if [ -z "$imav_ui_input" ]; then
-                        imav_ui_path="/var/www/html/imunifyav"
+                        imav_ui_path="$imav_default_path"
                     else
                         imav_ui_path="$imav_ui_input"
                     fi