chore: update gitignore and remove demo documentation

- Add temp/* to gitignore to exclude temporary files
- Remove demo.md as it's no longer needed

docs/demo.md

@@ -1,63 +0,0 @@
-# 组件库演示 (Element Plus)
-
-Easy-Vibe 已经集成了 [Element Plus](https://element-plus.org/)，你可以在 Markdown 中直接使用 Vue 组件。
-
-## 按钮示例
-
-<el-row class="mb-4">
-  <el-button>Default</el-button>
-  <el-button type="primary">Primary</el-button>
-  <el-button type="success">Success</el-button>
-  <el-button type="info">Info</el-button>
-  <el-button type="warning">Warning</el-button>
-  <el-button type="danger">Danger</el-button>
-</el-row>
-
-## 图标示例
-
-<el-icon :size="20" color="#409EFC" class="no-inherit">
-  <Edit />
-</el-icon>
-<el-icon :size="20" color="#67C23A" class="no-inherit">
-  <Share />
-</el-icon>
-<el-icon :size="20" color="#F56C6C" class="no-inherit">
-  <Delete />
-</el-icon>
-<el-icon :size="20" class="is-loading no-inherit">
-  <Loading />
-</el-icon>
-
-::: tip
-要使用图标，你可能需要手动导入具体的图标组件，或者配置自动导入。上面的示例假设你已经配置好了或使用了简单的图标。
-:::
-
-## 卡片示例
-
-<el-card class="box-card" style="width: 480px">
-  <template #header>
-    <div class="card-header">
-      <span>Card name</span>
-      <el-button class="button" text>Operation button</el-button>
-    </div>
-  </template>
-  <div v-for="o in 4" :key="o" class="text item">
-    {{'List item ' + o }}
-  </div>
-</el-card>
-
-<style>
-.card-header {
-  display: flex;
-  justify-content: space-between;
-  align-items: center;
-}
-
-.text {
-  font-size: 14px;
-}
-
-.item {
-  margin-bottom: 18px;
-}
-</style>