An HTML response carried no cache directive and no validator, which does not mean do not cache — it lets the browser choose a freshness lifetime. Safari chose one, and served a timeline rendered before a deploy while the server answered with another; the reader sees stale state with no way to tell.

no-cache rather than no-store: the copy is still kept and reused after revalidation, so the back button stays instant. Only reuse without asking is wrong, and every one of these pages is a view of moving state. check-in: ece3b20f3d user: dmestas tags: trunk