更新域名为 uzi1.cn，修复相关链接和配置，优化公告管理功能

src/composables/useQrCode.js

@@ -40,7 +40,7 @@ export function useQrCode() {
 
   const fetchQrCodeAfterDelay = async (state, countdown, mecmachineId, qrCreatedAt, qrExpireAt, retryCount = 0) => {
     try {
-      const qrCodeUrl = `https://2.uzi0.cc/image/${mecmachineId}/二维码.png?t=${Date.now()}`
+      const qrCodeUrl = `https://uzi1.cn/image/${mecmachineId}/二维码.png?t=${Date.now()}`
       console.log(`尝试获取二维码 (第${retryCount + 1}次):`, qrCodeUrl)
       
       const isUrlValid = await validateQrCodeUrl(qrCodeUrl)