chore: refactor countdown logic and update utils4u auto imports

src/components/send-sms.vue

@@ -9,7 +9,7 @@
 </template>
 
 <script setup lang="ts">
-const { countdownTime, triggerCountdown, isCounting } = useCountdown($__DEV__ ? 5 : 60);
+const { remaining: countdownTime, start: startCountdown, isActive: isCounting } = useCountdown($__DEV__ ? 3 : 60);
 
 const isSending = ref(false);
 const sendSms = async () => {
@@ -17,7 +17,7 @@ const sendSms = async () => {
   isSending.value = true;
   try {
     await new Promise((resolve) => setTimeout(resolve, 1000));
-    triggerCountdown();
+    startCountdown();
     ToastService.add({ severity: 'info', summary: '提示', life: 3000, detail: '验证码发送成功' });
   } finally {
     isSending.value = false;