feat: 绑定窗口标题到活动数据集元数据，添加销毁时取消订阅功能

src/routes/dataset/+page.svelte

@@ -3,13 +3,28 @@ import { afterNavigate } from '$app/navigation';
 import { activeDatasetMeta } from '$lib/stores/dataset';
 import { currentActivate } from '$lib/stores/navigate';
 import { invoke } from '@tauri-apps/api/core';
-import { get } from 'svelte/store';
+import { onDestroy } from 'svelte';
+import { type Unsubscriber } from 'svelte/store';
 import DatasetInfoForm from './DatasetInfoForm.svelte';
 
+let unsubscribeMeta: Unsubscriber | null = null;
+
+function bindWindowTitleToMeta() {
+  unsubscribeMeta = activeDatasetMeta.subscribe((meta) => {
+    void invoke('set_window_title', { title: meta?.name ?? '' });
+  });
+}
+
+bindWindowTitleToMeta();
+
 afterNavigate(() => {
   currentActivate.set('dataset');
+});
 
-  invoke('set_window_title', { title: get(activeDatasetMeta)?.name });
+onDestroy(() => {
+  if (unsubscribeMeta) {
+    unsubscribeMeta();
+  }
 });
 </script>