- Prevent Control UI session render crashes when `marked.parse()` encounters pathological recursive markdown by safely falling back to escaped `<pre>` output. - Tighten markdown fallback regression coverage and keep changelog attribution in sync for this crash-hardening path. Co-authored-by: Bin Deng <dengbin@romangic.com> Co-authored-by: Tak Hoffman <781889+Takhoffman@users.noreply.github.com>