fix: onPageNotFound 兜底防空页崩溃 + 首页/记录页接入 i18n(语言切换覆盖全部3个tab)

miniprogram/app.js

@@ -18,6 +18,15 @@ App({
     this.checkLogin()
   },
 
+  // Safety net: if the framework ever tries to open an unknown/empty route
+  // (e.g. a stale page stack after the pages list changed), fall back to home
+  // instead of surfacing a hard "page not found" crash.
+  onPageNotFound: function (res) {
+    if (res && res.isEntryPage) {
+      wx.reLaunch({ url: '/pages/index/index', fail: function () {} })
+    }
+  },
+
   checkLogin: function () {
     var token = wx.getStorageSync('token')
     if (!token) {