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feat: add tiny legend list - #4
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TinyLegendList keeps Legend List's core calculateItemsInView pass in small, readable files: - item-layout: estimate-first sizes (running average of measured items), cached positions recomputed only below a measured item. - buffered-range: viewport plus a direction-biased buffer, found by walking from the previous window; the pass is skipped while the rendered items still cover the buffered area. - findAvailableContainers: a pool of absolutely positioned containers; unused ones first, then the farthest out of range, then new ones. - signals: per-container item index and position, so the list never re-renders while scrolling and moved items keep their memoized content. The README explains the algorithm step by step and lists what is and is not implemented from Legend List. The example app gains a TinyLegendList tab. Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01T7g1A3Lyx7aaGcqw4kXRFB ^ Conflicts: ^ README.md ^ example/src/App.tsx ^ src/index.tsx
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