Add lstsq: minimum-norm least squares (A⁺b) for rank-deficient / inconsistent systems#5

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add-qr-factorizationfrom

Commits on May 30, 2026

Add lstsq: minimum-norm least squares (A⁺b) for rank-deficient / inconsistent systems
ChrisRackauckas
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Commits on May 31, 2026

lstsq: add a structure-exploiting DIRECT engine (capacitance) + make :auto the default
ChrisRackauckas
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lstsq: peel a selector-singular S so the structured direct engine handles the BVP case
ChrisRackauckas
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