feat(core): split Extend into CoverLanding vs Span#1113

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kronberger-droid wants to merge 3 commits into

nushell:mainfrom

kronberger-droid:selection-extent

Commits on Jun 29, 2026

feat(core): split Extend into CoverLanding and Span models
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test(core): cover extend_span and successive Span growth

kronberger-droid
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claude
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Commits on Jul 19, 2026

test(core): cover Span multibyte flip and selection_extent mapping

kronberger-droid
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claude
committed