perf: skip token parsing when raw content is unchanged

Author: Algorithm5838

src/lib/components/chat/Messages/Markdown.svelte

@@ -1,10 +1,17 @@
 <script>
 	import { onDestroy } from 'svelte';
-	import { marked } from '$lib/utils/marked/config';
+	import { marked } from 'marked';
 	import { replaceTokens, processResponseContent } from '$lib/utils';
 	import { user } from '$lib/stores';
 
+	import markedExtension from '$lib/utils/marked/extension';
+	import markedKatexExtension from '$lib/utils/marked/katex-extension';
+	import { disableSingleTilde } from '$lib/utils/marked/strikethrough-extension';
+	import { mentionExtension } from '$lib/utils/marked/mention-extension';
+
 	import MarkdownTokens from './Markdown/MarkdownTokens.svelte';
+	import footnoteExtension from '$lib/utils/marked/footnote-extension';
+	import citationExtension from '$lib/utils/marked/citation-extension';
 
 	export let id = '';
 	export let content;