Port the two master-side markdown fixes onto the mdast renderer:
cjkFriendlyStrong joins both parse.ts grammars as a micromark extension
(ex remark plugin), and inline-code HTTP(S) URLs gain the safe anchor in
render.tsx without normalizeUri. Re-record the two new web-e2e goldens
whose footer clock spacing diverged from the nine established goldens,
and drop the timing-flaky LLM duration segment one of them captured.