Add Jacobian reuse for Rosenbrock-W methods#3075

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ChrisRackauckas-Claude wants to merge 10 commits intoSciML:masterfrom

ChrisRackauckas-Claude:jacobian-reuse-rosenbrock-w-methods

Commits on Apr 10, 2026

Add Jacobian reuse for Rosenbrock-W methods (rebased onto master)
ChrisRackauckas
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Fix AD dual propagation and OOP numerical consistency in Jacobian reuse
ChrisRackauckas
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Disable Jacobian reuse for non-adaptive solves
ChrisRackauckas
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Relax special_interps tolerance for Rosenbrock-W methods
ChrisRackauckas
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Remove Julia 1.10 LTS fallback for calc_rosenbrock_differentiation
ChrisRackauckas
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Remove do_newJW delegation; keep all Rosenbrock J/W logic in one place
ChrisRackauckas
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Relax lazy-W utility test tolerance for Rosenbrock-W J reuse
ChrisRackauckas
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Disable J reuse for operator-based W (Krylov solvers)
ChrisRackauckas
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Fix linear-problem fast path and DelayDiffEq @test_broken

ChrisRackauckas
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claude
committed

Commits on Apr 11, 2026

DelayDiffEq jacobian test: only assert Wfact_t==jac count for Rodas5P

ChrisRackauckas
and
claude
committed