🐞 fix: 本地列表过长问题

[kazukokawagawa]

No description provided.

[gemini-code-assist]

Summary of Changes

Hello @kazukokawagawa, I'm Gemini Code Assist¹! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed!

此拉取请求旨在解决本地音乐文件夹列表在内容过多时可能导致界面显示异常的问题。通过引入滚动条和设置最大高度，确保了列表的可管理性和用户界面的美观性，提升了用户体验。

Highlights

• 解决列表过长问题: 为本地音乐文件夹列表添加了滚动条，并限制了其最大高度，以防止列表内容过多时超出屏幕，提升用户体验。
• 优化列表头部显示: 将列表的提示文本从 n-list 的 header 插槽中移出，独立为一个 n-text 组件，并为其添加了新的样式，使其显示更清晰。

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[gemini-code-assist]

Code Review

本次 PR 旨在解决本地音乐文件夹列表过长时导致的布局问题。通过为列表添加带有最大高度的滚动条，有效地解决了该问题。同时，将列表的提示信息移出列表头部，使其在滚动时保持可见，改善了用户体验。代码改动清晰，达到了预期目的。除了一个关于 v-for 指令中 key 使用的小建议外，整体实现得很好。

[gemini-code-assist]

感谢您对该组件的重构，它很好地解决了列表过长的问题。

另外，我建议对 v-for 的 key 做一个小小的优化。在 v-for 循环中，建议使用唯一的 item（文件路径）作为 key，而不是 index。当列表项被添加、删除或重新排序时，使用 index 作为 key 可能会导致 Vue 错误地复用组件实例，从而引发不易察觉的 bug 和不必要的性能开销。因为文件路径 item 在此上下文中应该是唯一的，所以它是一个更稳定和高效的 key。

这将帮助 Vue 更高效地跟踪每个列表项，确保在列表更新时 DOM 的正确渲染。

      <n-text class="local-list-tip">请选择本地音乐文件夹，将自动扫描您添加的目录，歌曲增删实时同步</n-text>
      <n-scrollbar style="max-height: 50vh">
        <n-list class="local-list" hoverable clickable bordered>
          <n-list-item v-for="(item, index) in settingStore.localFilesPath" :key="item">
            <template #prefix>
              <SvgIcon :size="20" name="Folder" />
            </template>
            <template #suffix>
              <n-button :focusable="false" quaternary @click="changeLocalMusicPath(index)">
                <template #icon>
                  <SvgIcon :size="20" name="Delete" />
                </template>
              </n-button>
            </template>
            <n-thing :title="item" />
          </n-list-item>
        </n-list>
      </n-scrollbar>