优化第一阶段

lib/utils/stepui.js

@@ -1,9 +1,6 @@
 import color from "picocolors";
 import { initKeypress, onKey, stopKeypress } from "../keyboard.js";
-
-function clearScreen() {
-  process.stdout.write('\x1Bc');
-}
+import { clearScreen } from "./terminal.js";
 
 export function createStepUI(options) {
   const { title, getSteps, onStepChange } = options;