OPTIMIZATION: Replace echo | cut with bash parameter expansion

Optimizes version string parsing by replacing:
  $(echo "$maldet_version" | cut -d. -f1)
with bash parameter expansion:
  ${maldet_version%%.*}

Location: Line 808 in Maldet version check
Impact: Eliminates subprocess call for version parsing

Status: ✓ Additional command substitution optimized

modules/security/malware-scanner.sh

@@ -805,7 +805,7 @@ install_all_scanners() {
 
                     # Check version is 2.0 or newer
                     if [ -n "$maldet_version" ]; then
-                        local major_version=$(echo "$maldet_version" | cut -d. -f1)
+                        local major_version=${maldet_version%%.*}
                         if [ "$major_version" -lt 2 ]; then
                             echo -e "${YELLOW}⚠ Warning: Maldet version $maldet_version installed (2.0+ recommended for performance)${NC}"
                         else