refactor(miniprogram): 优化登录逻辑

- 恢复使用用户手机号登录的逻辑
- 移除硬编码的手机号
- 添加获取并存储 accessToken 的功能
- 优化代码结构，提高可读性

miniprogram/pages/index/index.js

@@ -104,8 +104,8 @@ Page({
         });
         console.log("data1", data);
         if (data.status === 0) {
-          // let { phoneNumber: phone } = data.result;
-          let phone = "15136162222";
+          let { phoneNumber: phone } = data.result;
+          // let phone = "15136112233";
           let { data } = await postApi("/login", {
             phone,
             openId: wx.getStorageSync("openId"),
@@ -126,10 +126,7 @@ Page({
             );
           } else {
             console.log(data, "data23");
-            wx.setStorageSync(
-              "accessToken",
-              data?.result?.tokenInfo?.tokenValue || ""
-            );
+
             if (data?.result?.userInfo?.userId) {
               console.log(data, "data24");
               wx.showModal({