Add history cleaning prompt on exit

Changes:
- Prompt user to clean history when selecting Exit (0)
- Runs trace eraser if user answers 'yes'
- Shows clear message about what will be cleaned

User experience:
- Exit from main menu
- Asked: 'Clean history? (yes/no)'
- If yes: runs full trace eraser
- Then exits normally

launcher.sh

@@ -1503,6 +1503,16 @@ main() {
             9) edit_config ;;
             10) bash "$BASE_DIR/tools/erase-toolkit-traces.sh" ;;
             0)
+                echo ""
+                echo -e "${YELLOW}Clean bash history before exiting?${NC}"
+                echo "This will remove all toolkit-related commands from history."
+                echo ""
+                read -p "Clean history? (yes/no): " clean_hist
+
+                if [ "$clean_hist" = "yes" ]; then
+                    bash "$BASE_DIR/tools/erase-toolkit-traces.sh"
+                fi
+
                 echo ""
                 echo -e "${GREEN}Thanks for using Server Management Toolkit!${NC}"
                 echo ""