refactor(site): replace custom scroll implementation with react-infinite-scroll-component#24687
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DanielleMaywood merged 3 commits intomainfrom Apr 23, 2026
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🤖 This PR was written by Coder Agent on behalf of Danielle Maywood
Replace the custom Agents chat scroll state machine with
react-infinite-scroll-component@7.1.0, following the library's inverse-scroll integration pattern while preserving the floating scroll-to-bottom affordance.This removes the old bespoke bottom-lock, touch, wheel, resize, and prepend-restoration machinery from
ChatScrollContainer, replaces it with the library-managed inverse scroll container, threadsmessageCountthrough the page soInfiniteScrollcan re-arm correctly after prepends, and rewrites the Storybook coverage around the new contract. The floating "Scroll to bottom" button is added back as a thin overlay that listens to the library-managed scroll container instead of reviving the deleted state machine.