Rewrite O(N) recursive templates with O(1) pack expansion#3596

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tenpercent wants to merge 3 commits intompodkory/generate-tuple-optimizationsfrom

mpodkory/recursive-to-pack-expansion

Commits on Jan 17, 2026

Rewrite sequence_map_inverse using O(1) depth pack expansion
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Replace O(N) recursive element space size with O(1) fold expression
tenpercent
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Replace sequence_merge O(log N) recursion with O(1) fold expression
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