[WIP] Name-based index-set algebra, whole-tensor index ops, and the id/uuid rename#213

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mf/nextgen-followups-round1

Commits on Jul 8, 2026

Add index-tuple constructor error, index-keyed replacedimnames, svd_trunc ϵ, trivialrange for named ranges
mtfishman
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Add whole-tensor index ops (mapinds, prime, noprime, sim), name-only replaceinds, rank-0 similar/one
mtfishman
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Add name-based index-set algebra for AbstractNamedTensor
mtfishman
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Apply replaceinds/mapinds function form at the index level
mtfishman
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Rename the IndexName identifier accessor to uuid and add the id identity constructor
mtfishman
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Use name in place of the to_dimname helper
mtfishman
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