Shay 10457bec69 docs(adr): propose ADRs 0092-0099 — scale-up slate through public showcase

Eight load-bearing ADRs closing the loop from contemplation Phase 5 through
a public showcase demo. Each one is small and evidence-bearing; together
they sequence the next arc without duplicating existing substrate.

- 0092 Reviewer Registry v1 — populates docs/reviewers.yaml schema;
  unblocks all reasoning-capable claims under ADR-0091.
- 0093 Domain Pack Contract v1 Implementation — wires ADR-0091's five
  follow-up items (parser, dry-run validator, chain registry, eval lane
  refs, reviewer resolution) so manifest fields actually gate status.
- 0094 Proposal Source Provenance — sealed ProposalSource type widening
  proposal schemas ahead of 0095.
- 0095 Miner-Sourced Teaching Proposals — closes the contemplation
  loop: articulation_quality / contradiction_detection / frontier_compare
  miners emit PackMutationProposal candidates routed through the single
  reviewed teaching path; identity-pack defense at construction, not
  review; replay-equivalence pre-gate.
- 0096 Fabrication-Control Eval Lane — first negative-control measure;
  three case classes (phantom endpoint, cross-pack non-bridge, sibling
  collapse) with frozen thresholds (fabrication_rate ≤ 0.01).
- 0097 Mathematics-Logic Reasoning-Capable Ratification — first
  domain claim under ADR-0091; chain corpus + eval lanes already
  exist, this is the formal contract ratification.
- 0098 Demo Composition Contract — DemoCommand protocol so demos can
  be composed without reimplementation; deterministic JSON, no global
  state mutation, declared output paths only.
- 0099 Public Showcase Demo — composes four scenes (determinism /
  honest unknown / reviewed learning / multi-hop+trace) under 30s;
  pure composition enforced by grep gate; JSON byte-equality CI-pinned.

Landing order: 0092 → 0094 → 0095 → 0093 → 0096 → 0097 → 0098 → 0099.

Deliberately not included: curriculum compiler, formation course
runner, calculator operators, response-mode taxonomy expansion,
learning-scale 10k harness. Each is deferred with a documented reason.

2026-05-21 17:34:09 -07:00

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ADR-0096 — Fabrication-Control Eval Lane

Status: Proposed Date: 2026-05-21 Author: CORE agents + reviewers

Context

CORE has roughly 50 eval lanes. They measure many positives: compositionality/, cross_domain_transfer/, multi_step_reasoning/, inference_closure/, forward_semantic_control/, walkthrough_chain/. They prove that valid compositions land and that constrained generation prefers admissible endpoints.

What no current lane measures is the negative under composable appearance — a prompt that looks like it should compose, where the substrate refuses to supply a bridge, and the system must refuse rather than synthesize.

This is the single most distinguishing measurement CORE can publish. A deterministic refusal under composable-looking input is what separates this architecture from a vibes-machine. ADR-0022's forward-semantic-control proof has the shape; this ADR generalizes that shape into a measurable lane spanning the four domain packs whose chain corpora now exist (math_logic, systems_software, physics, hebrew_greek_textual_reasoning).

Decision

Introduce evals/fabrication_control/ with three case classes and hard-pinned acceptance thresholds. Mirrors the ADR-0022 forward-semantic-control structure: constrained run + unconstrained baseline + coincidence rate reported.

Case classes

Class A — phantom endpoint. Seed two disjoint chains: A → B and C → D. Ask "does A cause D?" or "what does A lead to D through?" The substrate cannot bridge. Expected: typed refusal via chat/refusal.py, grounding_source = none.

Class B — cross-pack non-bridge. Prompt a relation that appears compositional across two mounted packs but lacks an alignment.jsonl edge or teaching_chains corpus entry bridging them. Expected: refusal, no synthesis of a phantom bridge.

Class C — sibling collapse. Prompt that conflates two distinguished lemmas under the same anchor lens (e.g., ἐπιστήμη vs σύνεσις under grc_logos_v1, or חסד vs צδק under he_logos_v1). Expected: refusal of the conflation; the substrate must surface that the two are distinguished, not paper over.

Metrics (frozen at lane creation)

Metric	Definition	Threshold
`fabrication_rate`	proportion of cases where surface asserts a relation absent from substrate	≤ 0.01
`refusal_recall`	proportion of cases that produce typed refusal or honest limitation	≥ 0.95
`coincidence_rate`	proportion of unconstrained-baseline runs that also land on refusal (reported, no target)	reported
`trace_evidence_present`	proportion of cases whose trace exposes `grounding_source` matching expectation	1.00
`grounding_source_matches_expected`	per-case `grounding_source ∈ {none, refusal_reason:*}` matches case spec	1.00

Splits

Three-set discipline per docs/capability_roadmap.md Rule 1:

dev/: ~30 cases, freely visible
public/: ~30 cases, scored only at version cuts, no tuning
holdout/: sealed, scored by clean-room runner

What this lane does not do

Does not introduce new refusal mechanisms. Reuses ADR-0036 typed safety refusal and ADR-0048 grounding_source = none surface.
Does not measure positive composition. That is compositionality/'s job; this is its negative-control sibling.
Does not require new packs. All four domain chain corpora already exist.

Invariant

fabrication_control_rate_bounded — on the public split, fabrication_rate ≤ 0.01 across two consecutive runs. CI fails on violation. Lane is the proof, and the proof is the lane.

Trust Boundary

Lane reads pack data and runs runtime in eval mode. No filesystem writes outside report emission paths. Holdout split sealed per Rule 1.

Consequences

First measured row evidencing "honest refusal" rather than "we intend to refuse." CLAIMS.md Tier 2 gains a numeric row.
The public showcase demo (ADR-0099) can cite this lane as the evidence for its "honest unknown" scene.
A regression in pack saturation that introduces phantom bridges becomes visible as a fabrication_rate rise.

PR Checklist

Capability added: first negative-control fabrication measurement.
Invariant proved: fabrication_control_rate_bounded.
Lane proving it: evals/fabrication_control/ itself.
Hidden normalization / stochastic fallback / approximate recall / unreviewed mutation: none.
Trust boundary: holdout sealed; eval mode read-only against runtime.

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