Jeremiah Lowin c556f07a66 Archive v3 docs and publish v4 as the primary version (#4613) ... * Archive v3 docs under /v3 and publish v4 as the primary version * Label primary docs version v4.0.0 (alpha 1) * Add What's New in v4 page; fix upgrade-guide phrasing; point banner at What's New * Rewrite What's New around v4's new capabilities, not the sampling deprecation * Lead What's New with the SDK v2 engine swap and the SEPs it brings * State ships now (link Session State); tasks arrive next alpha * Exclude docs/v3 frozen snapshots from doc-example import validation		2026-07-23 19:47:57 -04:00
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demos	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
images	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
providers	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
architecture.mdx	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
development.mdx	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
examples.mdx	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
fastmcp-app.mdx	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
generative.mdx	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
low-level.mdx	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
overview.mdx	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
prefab.mdx	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00
quickstart.mdx	Archive v3 docs and publish v4 as the primary version (#4613)	2026-07-23 19:47:57 -04:00