refactor(mine游客组件): 调整布局与登录逻辑，清理冗余代码

调整底部布局，移除右侧箭头按钮
简化顶部导航栏，移除收藏入口
统一全平台微信授权登录按钮，删除备用登录逻辑与废弃函数
更新登录按钮样式与图标

WonderQ-MiniAPP/src/pages/mine/components/MineGuest.vue

@@ -9,14 +9,11 @@
         <text class="block text-[11px] font-semibold tracking-[0.28em] text-white/90">WONDERQ</text>
         <text class="mt-1 block text-[10px] tracking-[0.22em] text-white/55">MEMBER SPACE</text>
       </view>
-      <view class="absolute bottom-6 left-6 right-6 flex items-end justify-between">
+      <view class="absolute bottom-6 left-6 right-6 flex items-end justify-end">
         <view>
           <text class="block text-[18px] font-medium tracking-[0.04em] text-white">把旅程交给懂你的人</text>
           <text class="mt-2 block text-[10px] tracking-[0.2em] text-white/60">A QUIETER WAY TO TRAVEL</text>
         </view>
-        <view class="flex h-9 w-9 items-center justify-center rounded-full border border-white/30 bg-black/15">
-          <uni-icons type="arrowright" :size="18" color="#fffaf5" />
-        </view>
       </view>
     </view>
     <view
@@ -30,28 +27,15 @@
         <text>行程</text>
         <text class="text-[#c8beb5]">·</text>
         <text>订单</text>
-        <text class="text-[#c8beb5]">·</text>
-        <text>收藏</text>
       </view>
-      <!-- #ifdef MP-WEIXIN -->
+
       <button
-        class="tap-feedback m-0 mt-5 flex min-h-[48px] w-full max-w-[280px] items-center justify-center gap-2 rounded-[14px] border-0 bg-[#a45a3d] px-6 text-[16px] font-semibold tracking-[0.05em] text-white shadow-none"
+        class="tap-feedback m-0 mt-5 flex min-h-[48px] w-full max-w-[280px] items-center justify-center gap-2 rounded-full border-0 bg-[#a45a3d] px-6 text-[16px] font-semibold tracking-[0.05em] text-white shadow-none"
-        open-type="getPhoneNumber"
+        open-type="getPhoneNumber" @getphonenumber="handlePhoneLogin">
-        @getphonenumber="handlePhoneLogin"
+        <uni-icons type="weixin" :size="19" color="#fffaf5" />
-      >
-        <uni-icons type="chat" :size="19" color="#fffaf5" />
         <text>微信授权登录</text>
       </button>
-      <!-- #endif -->
+
-      <!-- #ifndef MP-WEIXIN -->
-      <button
-        class="tap-feedback m-0 mt-5 flex min-h-[48px] w-full max-w-[280px] items-center justify-center gap-2 rounded-[14px] border-0 bg-[#a45a3d] px-6 text-[16px] font-semibold tracking-[0.05em] text-white shadow-none"
-        @click="handleFallbackLogin"
-      >
-        <uni-icons type="chat" :size="19" color="#fffaf5" />
-        <text>微信授权登录</text>
-      </button>
-      <!-- #endif -->
     </view>
   </view>
 </template>
@@ -84,8 +68,4 @@ onMounted(syncMenuButtonPosition);
 function handlePhoneLogin(event: PhoneLoginEvent) {
   emit("login", event);
 }
-
-function handleFallbackLogin() {
-  emit("login", { detail: {} });
-}
 </script>