Hyper docs

chat: flat composer bar, inked model menu and native file window by @shalins in #1606
website: subscribe the footer form to a newsletter table by @shalins in #1617
waitlist: remove the endpoint, welcome email, and waitlist sends by @shalins in #1618
website: say paid plans are live by @shalins in #1619
release: write the v1.12.0 notes and announcement by @shalins in #1616
release: ask users to report limits that come too fast by @shalins in #1621
billing: enforce automation capacity by @kanyesthaker in #1624
billing: gate premium connectors by @kanyesthaker in #1625
billing: gate background agents by @kanyesthaker in #1626
compaction: use anthropic's own compaction for claude by @kanyesthaker in #1620
compaction: use openai's own compaction and delete the summarizer by @kanyesthaker in #1632
compaction: always follow a compaction block with a user turn by @kanyesthaker in #1634
billing: enforce cloud session duration by @kanyesthaker in #1627