Fix history cleaning to work from parent shell

The fundamental issue: launcher.sh runs in a subprocess, so it cannot modify the parent shell's history where the curl command was executed.

Solution: Create a temporary cleanup script that the parent shell must source after launcher exits. This allows the history cleaning to run in the correct shell context.

User workflow:
1. Run launcher.sh and select exit with cleanup
2. Source the generated /tmp/.cleanup_history_$$.sh script
3. History is cleaned in the parent shell
4. Exit and restart shell to verify

The cleanup script removes toolkit traces from ~/.bash_history and disables history recording for the current session.

launcher.sh

@@ -1507,33 +1507,48 @@ main() {
                 read -p "Clean history and remove traces? (yes/no): " clean_hist
 
                 if [ "$clean_hist" = "yes" ]; then
-                    # Clean history in current shell FIRST (before subprocess)
-                    # This ensures the parent shell's history is cleaned
-                    GREP_PATTERN="git\.mull\.lol|linux-server-management-toolkit|server-toolkit|launcher\.sh|erase-toolkit-traces"
+                    # Create a cleanup script for the parent shell to source
+                    cat > /tmp/.cleanup_history_$$.sh << 'CLEANUP_EOF'
+# Disable history recording
+set +o history
+shopt -u histappend 2>/dev/null || true
 
-                    # Clean the history file (same logic as trace eraser)
-                    if [ -f ~/.bash_history ]; then
-                        cp ~/.bash_history ~/.bash_history.bak.$$
-                        grep -Ev "$GREP_PATTERN" ~/.bash_history.bak.$$ > ~/.bash_history 2>/dev/null || true
-                        rm -f ~/.bash_history.bak.$$
-                    fi
+# Clean the history file
+GREP_PATTERN="git\.mull\.lol|linux-server-management-toolkit|server-toolkit|launcher\.sh|erase-toolkit-traces"
+if [ -f ~/.bash_history ]; then
+    cp ~/.bash_history ~/.bash_history.bak.$$
+    grep -Ev "$GREP_PATTERN" ~/.bash_history.bak.$$ > ~/.bash_history 2>/dev/null || true
+    rm -f ~/.bash_history.bak.$$
+fi
 
-                    # Clear current shell's in-memory history
-                    history -c
+# Clear and reload history
+history -c
+history -r ~/.bash_history
+unset HISTFILE
 
-                    # Reload cleaned history
-                    history -r ~/.bash_history
+# Clean up this temp script
+rm -f /tmp/.cleanup_history_*.sh 2>/dev/null
 
-                    # Unset HISTFILE to prevent re-writing on exit
-                    unset HISTFILE
+echo ""
+echo "✓ History cleaned. Exit and start new shell to verify."
+echo ""
+CLEANUP_EOF
 
-                    # Now run trace eraser for logs/files/directory cleanup
+                    # Run trace eraser for logs/files/directory cleanup
                     TRACE_ERASER_AUTO=yes bash "$BASE_DIR/tools/erase-toolkit-traces.sh" 2>&1 | grep -E "^✓|^$" || true
-                fi
 
-                echo ""
-                echo -e "${GREEN}Thanks for using Server Management Toolkit!${NC}"
-                echo ""
+                    echo ""
+                    echo -e "${GREEN}✓ All traces removed${NC}"
+                    echo ""
+                    echo -e "${YELLOW}IMPORTANT: Run this command now to clean your shell's history:${NC}"
+                    echo ""
+                    echo "source /tmp/.cleanup_history_$$.sh"
+                    echo ""
+                else
+                    echo ""
+                    echo -e "${GREEN}Thanks for using Server Management Toolkit!${NC}"
+                    echo ""
+                fi
                 exit 0
                 ;;
             *)