refactor: DRY Markdown post-processing logic

tools/server/webui/src/lib/components/app/misc/MarkdownContent.svelte

@@ -76,15 +76,29 @@
 		html: string;
 	};
 
-	function enhanceLinks(html: string): string {
-		if (!browser || !html.includes('<a')) {
+	/**
+	 * Helper to process HTML with a temporary DOM element.
+	 * Returns original HTML if not in browser or tag not found.
+	 */
+	function processHtml(
+		html: string,
+		tagCheck: string,
+		processor: (tempDiv: HTMLDivElement) => boolean
+	): string {
+		if (!browser || !html.includes(tagCheck)) {
 			return html;
 		}
 
 		const tempDiv = document.createElement('div');
 		tempDiv.innerHTML = html;
 
-		// Make all links open in new tabs
+		const mutated = processor(tempDiv);
+
+		return mutated ? tempDiv.innerHTML : html;
+	}
+
+	function enhanceLinks(html: string): string {
+		return processHtml(html, '<a', (tempDiv) => {
 			const linkElements = tempDiv.querySelectorAll('a[href]');
 			let mutated = false;
 
@@ -100,17 +114,12 @@
 				link.setAttribute('rel', 'noopener noreferrer');
 			}
 
-		return mutated ? tempDiv.innerHTML : html;
+			return mutated;
+		});
 	}
 
 	function enhanceCodeBlocks(html: string): string {
-		if (!browser || !html.includes('<pre')) {
-			return html;
-		}
-
-		const tempDiv = document.createElement('div');
-		tempDiv.innerHTML = html;
-
+		return processHtml(html, '<pre', (tempDiv) => {
 			const preElements = tempDiv.querySelectorAll('pre');
 			let mutated = false;
 
@@ -187,7 +196,8 @@
 				pre.parentNode?.replaceChild(wrapper, pre);
 			}
 
-		return mutated ? tempDiv.innerHTML : html;
+			return mutated;
+		});
 	}
 
 	function getCodeInfoFromTarget(target: HTMLElement) {