The A1 cut of #147 item 2, part 2 of 2 (the consumers), completing what
part 1 (the MetricVocabulary substrate) set up:
- aura-campaign's RANKABLE_METRICS hand-copy becomes a re-export of the
backtest vocabulary's roster; the #190 guard test extends to pin the
roster nesting (rankable == vocabulary roster, rankable within
per-member, per-member within the research vocabulary) and the legacy
exposure_sign_flips alias, so any drift fails a test loudly. The
research and per-member rosters themselves stay hand-copies by ratified
isolation (#190 accepted residual) — now oracle-pinned instead of trusted.
- aura-cli gains IcMetrics + IcKey implementing MetricVocabulary: the
second PRODUCTION implementor. The standalone `aura measure ic`
reduction now computes its permutation p via the shared null_draw +
one_sided_p_laplace building blocks (independent draws instead of
chained shuffles — statistically equivalent, deterministic per seed;
emitted p values may differ in the last digits from #290's).
- Acceptance proven at the registry boundary: an engineered
SweepFamily<IcMetrics> deflates through optimize_deflated to a LOW
overfit probability and a noise family to a HIGH one (the permutation
null, dispatched by the vocabulary — the deflation machinery is no
longer baked-in R-only); same seed reproduces the identical
FamilySelection; cross-vocabulary names are refused with the family's
own roster in the prose (the C10 guard). A new cli_run E2E exercises
the legacy alias through the real `aura runs family … rank` boundary.
Deviation from the plan, forced by the compiler: IcMetrics additionally
derives Debug (unwrap_err on the deflation Result needs it; mirrors
RunMetrics).
Verification: full workspace suite green (no FAILED, no compile errors),
clippy -D warnings clean, C18 goldens (cli_run, measure_ic, c28_layering)
green unchanged. A2 — measurement runs as sweep-family citizens — stays
deliberately deferred until a concrete campaign demand exists.
closes#147
claude
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