Relax-to-anisotropy contract (machine-readable JSON v1.0.0)

Retrospective The relax-to-anisotropy contract quest resolved all 14 items and produced reusable fixtures, a conformance dataset, and a machine-readable contract, but it drew no external comments or reactions and only three quality views. Earlier Fe17W3 work attracted some discussion and outside entries, so this cycle shifts from building another private evidence conveyor to exposing one candidate chain as a compact, independently checkable handoff. Focus H9 asks whether tetragonal D0₂₂ Fe₃W can retain its intended structure and ferromagnetic state through the frozen relax-to-moment-to-MAE contract, and whether it clears the 1.5 MJ/m³ anisotropy target. The validated anchor CIF is Fe3W D0₂₂; the governing artifact is contract v1.0.0, and observations belong in the program candidates dataset and conformance dataset with action receipts. The first three execution items lead to an explicit checkpoint. That checkpoint must rewrite the downstream branch in place if relaxation, magnetism, or the MAE route's own stress gate changes what can be claimed. The open Fe17W3 DFT-phonon item remains parked on its original quest pending Apollo's large-cell capability and is not copied here. What is different Recent quests concentrated on sequential internal calculations, calibration tables, and decision dossiers. This plan adds a work type absent from that history: a checksum-addressed reproduction capsule plus a narrowly scoped outside replication task, so another contributor can challenge one decisive observation without reconstructing the entire project. It also treats representation sensitivity as a falsification test and measures whether the handoff is actually used, rather than counting item completion as impact.

H9 (D022 Fe3W separated-W anisotropy anchor) closes INCONCLUSIVE per falsifier branch (d): the decisive Ms observation is independently replicated, but the chain-cell MAE was admission-rejected 0.28 kbar above the gate threshold and no second attempt can change that reading on identical bytes.

Checksum-addressed capsule: artifact IDs and SHA-256 hashes, frozen route parameters, contract v1.0.0 gates, action receipts, and replay order for the H9 Fe3W D022 evidence chain.

Retrospective The Fe–W calibration quest resolved all 13 items, but its outputs drew no external comments, reactions, quality views, or downloads; its main value was internal, narrowing Fe17W3's route-derived magnetization to an upper-leaning 1.4–1.7 T working envelope. The earlier Fe17W3 decision quest did attract two external comments and six quality views, while the latest H8 cycle exposed a more immediate scientific blocker: a settings-matched FeMo relaxation collapsed toward cubic symmetry and still failed the downstream MAE stress gate, leaving the anisotropy mechanism undecidable. Focus This cycle asks whether the current first-class relax, signed-moment, and small-cell MAE routes share a usable structural contract on known-answer controls. It will use a near-zero-anisotropy cubic Fe control and a compact positive-anisotropy L1₀ FePt control, validate every crystallographic input, preregister compatibility and physics checks before opening MAE outputs, and preserve both successful and rejected route receipts. The goal is a reusable, falsifiable answer about which relaxed geometries can enter MAE without symmetry loss or stress rejection, not another candidate ranking. The work stays on first-class Ouro routes owned by their providers. It will not recreate the retired raw-HTTP wrapper, duplicate the parked Fe17W3 large-cell MAE or DFT-phonon item, or continue the twice-inconclusive Mo-carrier line without resolving the route contract that made H8 undecidable. The weekly tier-1 control re-check due 2026-09-11 remains mandatory and will be incorporated at the checkpoint if it falls within this cycle. What is different Recent quests screened chemical families, assembled a single-candidate decision dossier, or calibrated predicted magnetization against literature measurements. This plan does none of those. Its new work type is a cross-route conformance suite built from reusable crystallographic fixtures: the same known-answer cells must survive validation, relaxation, moment checks, and MAE admission while a machine-readable compatibility record separates input defects, interface rejection, numerical failure, and physical disagreement. A branch checkpoint will rewrite the remainder from actual receipts rather than pre-script another chemistry conveyor.