yield_anchor: which side of exact Min the soft-min yield law sits on - #475

Merged

lmoresi merged 35 commits into

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feature/regime-diagram

Aug 2, 2026

Commits on Jul 27, 2026

feat(constitutive): power-mean yield soft-min smoother + rampable delta constant
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fix(constitutive): DP consistent-Newton recursion on Max yield + smooth floors
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feat(systems): yield_continuation driver — multi-solve delta-continuation (reference impl)
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docs(design): nonlinear-solver automatic warm-start + single-parameter yield homotopy
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feat(solver): has_solution warm-start status + cold consistent-Newton Picard warm-up (Layer 1a)
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docs(solver): nonlinear-solver skill (recipe + config trap list) + mark Layer 1a landed
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feat(solver): default the FMG velocity smoother to gmres+sor, fixed-cost V-cycle (Layer 3)
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docs(solver): record the measured Layer 3 result and the multigrid-depth method
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feat(solver): model-advertised yield homotopy and stokes.solve(homotopy=True) (Layer 2)
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docs(solver): Layer 2 landed — one-call homotopy, and the cold-start NaN correction
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fix(constitutive): power-mean yield NaN at zero strain rate (rigid/unyielded points)
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docs(solver): correct the cold-start diagnosis — inf-safe algebra, not a strain-rate floor
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feat(solver): zero_init_guess becomes tri-state and auto-detects cold vs warm (Layer 1b)
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docs(solver): all four layers landed; drop the last stale cold-start claims
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fix(constitutive): yield_stress_min defaults to 0, floored via symbolic smooth_max
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fix(solver): close the critical adversarial-review findings in the homotopy march
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fix(constitutive/solver): close review findings M6, M7, M9
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fix(solver): close the remaining review minors and add parallel coverage
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feat(constitutive): apply the rate regularisation on the DP model; pin the homotopy capability
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chore: drop the constitutive_models.py.bak copy committed by accident
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feat(solver): wall-clock guard and sub-solve work gauge
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Merge remote-tracking branch 'origin/feature/nonlinear-warmstart-homotopy' into feature/regime-diagram
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Merge branch 'feature/solver-wallclock-guard' into feature/regime-diagram
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fix(test): pin the JIT-constant ramp test to a cold initial guess
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fix(solver): close the adversarial-review findings on the wall-clock guard
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docs(review): adversarial review of the wall-clock guard
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Merge branch 'feature/solver-wallclock-guard' into feature/regime-diagram
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Merge remote-tracking branch 'origin/feature/nonlinear-warmstart-homotopy' into feature/regime-diagram
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fix(solve-report): SNES converged-reason table was off by one against PETSc
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Commits on Jul 30, 2026