Conformance — reference README

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Conformance is testable: an implementation demonstrates it by round-tripping the published test vectors for the profile and tier it claims, comparing against the normalized canonical form defined in SPEC.md §8.3 (parse → canonicalize → serialize, RFC 8785). The per-element tier assignments in §§4–7 are normative for what is tested.

Profiles (SPEC §8.2)

• Observation core — Measurement with type, a value, conditional unit, startTime/endTime; envelope id/recordType/subject.
• Training core — WorkUnit with scoring (all five kinds readable); envelope id/recordType/subject.

An implementation declares the profile(s) it supports; producer and consumer conformance may be asymmetric (§3.3). Lossless passthrough of unsupported elements is mandatory at every tier.

Layout

• vectors/ — the minimum core vectors (the conformance bar). Per SPEC §8.3 these MUST cover: each WorkUnit.scoring kind; a resistance set; an interval/round scheme; continuous endurance; scalar-and-Target forms; nested vs flat+partOf equivalence; an unresolved ExerciseRef, an unknown extension, and an unknown open token (each round-tripping losslessly); a supersession lineage and a tombstone; a sampleArray in regular/irregular × scalar/multi-channel with a null sample; and a normalization-determinism vector (sets-expansion + id-less child + number canonicalization).
• corpus/ + CORPUS.md — the extended activity-coverage corpus (coverage validation, not a conformance bar): the executable form of the “never inferior to prior art” gate.

Status

The minimum-core vectors/ and the activity-coverage corpus/ are both authored and runnable: openbody-ts (npm run vectors) checks each assertion against the reference implementation, and this repo’s npm run check schema-validates every record. The corpus covers 16 real-world training methodologies (see CORPUS.md); it grows as new activities are stress-tested, and gaps it surfaces feed the standard’s change process.