feat: 添加TextEncoder和TextDecoder的polyfill实现

添加polyfill.js文件实现TextEncoder和TextDecoder的兼容性支持
修改app.js引入polyfill
将mock数据注释标记为TODO

@@ -7,6 +7,7 @@
  */
 import { createApp } from 'vue'
 import { createPinia } from 'pinia'
+import './utils/polyfill'
 import './app.less'
 import { saveCurrentPagePath, needAuth, silentAuth, navigateToAuth } from '@/utils/authRedirect'
 import Taro from '@tarojs/taro'

@@ -35,7 +35,7 @@ const toHome = () => {
     Taro.reLaunch({ url: '/pages/index/index' });
 }
 
-// Mock Data as per requirement
+// TODO: Mock Data as per requirement
 const getMockData = () => {
     return [
         {

+
+if (typeof TextEncoder === 'undefined') {
+  class TextEncoder {
+    encode(str) {
+      const len = str.length;
+      const res = [];
+      for (let i = 0; i < len; i++) {
+        let point = str.charCodeAt(i);
+        if (point <= 0x007f) {
+          res.push(point);
+        } else if (point <= 0x07ff) {
+          res.push(0xc0 | (point >>> 6));
+          res.push(0x80 | (0x3f & point));
+        } else if (point <= 0xffff) {
+          res.push(0xe0 | (point >>> 12));
+          res.push(0x80 | (0x3f & (point >>> 6)));
+          res.push(0x80 | (0x3f & point));
+        } else {
+          point = 0x10000 + ((point - 0xd800) << 10) + (str.charCodeAt(++i) - 0xdc00);
+          res.push(0xf0 | (point >>> 18));
+          res.push(0x80 | (0x3f & (point >>> 12)));
+          res.push(0x80 | (0x3f & (point >>> 6)));
+          res.push(0x80 | (0x3f & point));
+        }
+      }
+      return new Uint8Array(res);
+    }
+  }
+
+  if (typeof globalThis !== 'undefined') {
+    globalThis.TextEncoder = TextEncoder;
+  }
+  if (typeof global !== 'undefined') {
+    global.TextEncoder = TextEncoder;
+  }
+  if (typeof window !== 'undefined') {
+    window.TextEncoder = TextEncoder;
+  }
+}
+
+if (typeof TextDecoder === 'undefined') {
+  class TextDecoder {
+    decode(view, options) {
+      if (!view) {
+        return '';
+      }
+      let string = '';
+      const arr = new Uint8Array(view);
+      for (let i = 0; i < arr.length; i++) {
+        string += String.fromCharCode(arr[i]);
+      }
+      try {
+          // 简单的 UTF-8 解码尝试
+          return decodeURIComponent(escape(string));
+      } catch (e) {
+          return string;
+      }
+    }
+  }
+  if (typeof globalThis !== 'undefined') {
+    globalThis.TextDecoder = TextDecoder;
+  }
+  if (typeof global !== 'undefined') {
+    global.TextDecoder = TextDecoder;
+  }
+  if (typeof window !== 'undefined') {
+    window.TextDecoder = TextDecoder;
+  }
+}