Jeremiah Lowin f896f5acb5 v4 docs quality pass: stale task/era claims, broken links, polish (#4619) ... * v4 docs quality pass: fix stale task/era claims, broken links, writing polish * whats-new: add the client-side protocol negotiation story The page told the server half of the era story (serves every era) but never the client half — that a default Client(url) now negotiates the modern era, where earlier versions pinned the handshake. Completes the mental model and links to the client negotiation docs. * Address review: drop 'complete' over-claim; link mounted-state to Session State		2026-07-23 20:42:13 -04:00
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upgrading	v4 docs quality pass: stale task/era claims, broken links, polish (#4619)	2026-07-23 20:42:13 -04:00
installation.mdx	Move pip upgrade recovery into a Troubleshooting section (#4219)	2026-05-22 21:13:19 -04:00
quickstart.mdx	Add UTM params to Horizon docs links (#4018)	2026-04-22 16:47:55 -04:00
welcome.mdx	Add UTM tracking to Horizon links (#4064)	2026-04-26 08:38:05 -04:00
whats-new.mdx	v4 docs quality pass: stale task/era claims, broken links, polish (#4619)	2026-07-23 20:42:13 -04:00