Fix HIGH priority issues: paths, globs, deps, wordsplit

- Fixed 3 unquoted path expansions in cleanup-toolkit-data.sh
  (lines 175, 192-193: quoted $pattern in ls/rm commands)

- Fixed 3 unquoted globs in erase/malware-scanner scripts
  (erase-toolkit-traces.sh lines 103-104, malware-scanner.sh line 229)

- Added system-detect.sh sourcing to email-functions.sh
  (fixes 5 HIGH priority DEP warnings for detect_control_panel)

- Fixed 2 WORDSPLIT issues in mysql-analyzer.sh
  (lines 137, 362: changed from for loops to while read loops
   to safely handle database/table names with spaces)

modules/security/malware-scanner.sh

@@ -226,7 +226,7 @@ install_all_scanners() {
             cd maldetect-* 2>/dev/null
             ./install.sh &>/dev/null
             cd /tmp
-            rm -rf maldetect-*
+            rm -rf "maldetect-"*
         fi
 
         if is_maldet_installed; then