feat(app): 昵称输入框启用微信原生昵称填充

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

packages/app/src/pages/profile/info.vue

@@ -24,8 +24,9 @@
         <text class="form-label">昵称</text>
         <input
           class="form-input"
+          type="nickname"
           v-model="form.nickname"
-          placeholder="请输入昵称"
+          placeholder="点击右侧按钮获取微信昵称"
           placeholder-style="color: #ccc"
           maxlength="20"
           :disabled="saving"