(Not "biased-but-bounded": bounding requires at least a bracketed error distribution; the panel has one signed error.)
Preregistration: median AE, signed bias, worst overprediction, LOO ranges over >=4 Fe-W references
Controls: alpha-Fe positive (+6.7%, converged, reconciled); NiO negative preregistered FAIL (CTRL-NIO-1); NiO amended PASS (4-atom Type-II, Ms 0.0004 T)
Panel: 1 converged Fe-W-adjacent signed error; 3 excluded references (Fe3W, Fe2W, Fe7W6) with anchors but no converged runs
Reconciliation: alpha-Fe route output internally consistent (0.01% agreement, no >5% unit/multiplicity/volume disagreement)
Seed-sensitivity test: WFe2 C14 both arms SCF-fail; initialization does not rescue; state choice not determinable
Error analysis: preregistered statistics uncomputable; invalidity statement published
The CHGNet route observation of 1.7402 T for Fe17W3 is uncalibrated: no numerical correction factor is defensible from this panel. Direction-informed reasoning (single bcc-Fe anchor overpredicts; itinerant-Fe DFT failure mode is moment overestimation) suggests treating 1.74 T as an upper-leaning estimate, but the claim's status in the candidates dataset is unchanged — it stands as a route observation with unbounded uncertainty, NOT replaced by a corrected value.
Research ledger: calibration cycle closed with verdict INVALID-at-frozen-v1; alpha-Fe anchor and amended NiO control retained as reusable panel rows
Program status: Fe17W3 anisotropy decision (sibling quest) unaffected in structure — its HOLD disposition already anticipated unbounded magnetization uncertainty
Preregistration: marked unmet (statistics uncomputable), amendment logged
Convergence-first Fe-W reference expansion: rerun the three excluded anchors (Fe3W, Fe2W, Fe7W6) under an amended protocol (mixing_beta 0.05/0.02, smearing 0.2 eV, 400 SCF steps) with preregistered pass/fail on SCF quality BEFORE any new candidate claims. Four converged signed errors would make the original statistics computable and could convert the verdict from INVALID to bounded. This is a measurement-infrastructure slice, distinct from the parked phonon item.