修正多处问题

gym-manage-uniapp/components/TabBar.vue

@@ -183,9 +183,7 @@ function onTabTap(index) {
   emit('tab-change', index)
   // 设置导航标志，阻止轮询覆盖状态
   isNavigating = true
-  let timer = setTimeout(() => {
-    uni.showLoading({ title: '加载中...', mask: true })
-  }, 50)
+  uni.showLoading({ title: '加载中...', mask: true })
   isSwitching = true
   uni.switchTab({
     url: targetPath,
@@ -195,7 +193,6 @@ function onTabTap(index) {
       uni.reLaunch({ url: targetPath })
     },
     complete: () => {
-      clearTimeout(timer)
       uni.hideLoading()
       setTimeout(() => {
         isSwitching = false