perf: migrate chat rendering to virtua (#1651)

* refactor: migrate chat history virtualization to virtua

* refactor: render loaded chat history directly

* refactor: finish virtua migration

* perf: defer tool body rendering

* perf: queue deferred tool body mounts

* perf: quiet and defer markdown file probes

* perf: defer markdown code highlighting

* perf: stabilize markdown plugin lists

* perf: defer mermaid markdown rendering

* perf: delay markdown file reference annotation

* perf: attach markdown table listeners on demand

* perf: trim markdown render overhead

packages/ui/src/apps/MobileFilesSurface.tsx

@@ -493,7 +493,7 @@ const MobileTextFile: React.FC<{ path: string; content: string }> = ({ path, con
   if (isMarkdownFile(path)) {
     return (
       <ScrollShadow className="h-full overflow-y-auto px-4 py-4">
-        <SimpleMarkdownRenderer content={content} />
+        <SimpleMarkdownRenderer content={content} enableFileReferences={false} />
       </ScrollShadow>
     );
   }