feat: 预加载优化、nav-bar 箭头居中优化

miniprogram/pages/age/age.ts

@@ -19,7 +19,15 @@ const TAB_BAR_PATHS = new Set([
     '/pages/profile/profile',
 ]);
 
+let _navigating = false;
+
+function releaseNavigateLock() {
+    _navigating = false;
+}
+
 function navigateByPath(path?: string, fallbackTitle?: string) {
+    if (_navigating) return;
+
     const p = String(path || '').trim();
     if (!p) {
         wx.showToast({
@@ -37,11 +45,22 @@ function navigateByPath(path?: string, fallbackTitle?: string) {
                 query,
             );
         }
-        wx.switchTab({ url: basePath });
+        _navigating = true;
+        wx.switchTab({
+            url: basePath,
+            complete: releaseNavigateLock,
+            fail: releaseNavigateLock,
+        });
         return;
     }
-    wx.navigateTo({ url: p }).catch((err) => {
-        console.error('navigateByPath error:', err);
+    _navigating = true;
+    wx.navigateTo({
+        url: p,
+        complete: releaseNavigateLock,
+        fail: (err) => {
+            console.error('navigateByPath error:', err);
+            releaseNavigateLock();
+        },
     });
 }
 

miniprogram/pages/age/age.wxml

@@ -116,7 +116,7 @@
                     path="{{item.path}}"
                     data-title="{{item.title}}"
                     data-path="{{item.path}}"
-                    bindtap="onTapCard"
+                    bind:cardtap="onTapCard"
                 />
             </view>
         </view>