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starter kitStreaming chat on fancy-query useFancyStream — Echo events patch the cache in place (append + token-stream + reconcile), optimistic send, poll fallback.
built with fancy-query
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curl -L https://ui.particle.academy/starter-kits/fancy-query/download.zip -o fancy-query.zip && unzip fancy-query.zip && cd fancy-query-starter && npm install && npm run devSelf-contained Vite + React 19 + Tailwind v4 project. ~12 KB. Edit src/Kit.tsx to make it yours. MIT.
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Real useFancyStream wiring — Echo events → setQueryData reducers (append / patch / reconcile), optimistic append(), isStreaming, and a poll fallback. The streaming backend is stubbed in-file; swap it for window.Echo + a history endpoint and this component is unchanged.