Pages serves exactly the newest artifact, so every push-triggered deploy
deleted the previous build's content-hashed JS/CSS while edge caches
(max-age=300, stale-while-revalidate=3600) kept serving HTML that
referenced them. With deploys landing every ~15-30 min, docs pages spent
most of the day pointing at 404'd bundles — search (pure client JS) was
the loudest casualty.
Fix: keep a rolling 14-day pool of hashed assets (en + zh-Hans) in the
Actions cache and union-merge it into each deploy artifact, current
build authoritative on collision (cp --update=none). Stale HTML and
already-open tabs now keep resolving across any number of deploys.
3d7dda4cf4