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/components/sections/skills/SkillsPage.tsx

@@ -608,6 +608,7 @@ const SkillsInstalledPage: React.FC = () => {
                       content={skillMarkdown}
                       className="typography-markdown-body"
                       stripFrontmatter
+                      enableFileReferences={false}
                     />
                   </div>
                 </ScrollableOverlay>