10457bec69
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.
118 lines
4.5 KiB
Markdown
118 lines
4.5 KiB
Markdown
# ADR-0096 — Fabrication-Control Eval Lane
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**Status:** Proposed
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**Date:** 2026-05-21
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**Author:** CORE agents + reviewers
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---
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## Context
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CORE has roughly 50 eval lanes. They measure many positives:
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`compositionality/`, `cross_domain_transfer/`, `multi_step_reasoning/`,
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`inference_closure/`, `forward_semantic_control/`, `walkthrough_chain/`.
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They prove that valid compositions land and that constrained generation
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prefers admissible endpoints.
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What no current lane measures is the **negative under composable
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appearance** — a prompt that looks like it should compose, where the
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substrate refuses to supply a bridge, and the system must refuse rather
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than synthesize.
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This is the single most distinguishing measurement CORE can publish. A
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deterministic refusal under composable-looking input is what
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separates this architecture from a vibes-machine. ADR-0022's
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forward-semantic-control proof has the shape; this ADR generalizes
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that shape into a measurable lane spanning the four domain packs whose
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chain corpora now exist (`math_logic`, `systems_software`, `physics`,
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`hebrew_greek_textual_reasoning`).
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---
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## Decision
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Introduce `evals/fabrication_control/` with three case classes and
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hard-pinned acceptance thresholds. Mirrors the ADR-0022
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forward-semantic-control structure: constrained run + unconstrained
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baseline + coincidence rate reported.
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### Case classes
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**Class A — phantom endpoint.**
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Seed two disjoint chains: `A → B` and `C → D`. Ask "does A cause D?" or
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"what does A lead to D through?" The substrate cannot bridge. Expected:
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typed refusal via `chat/refusal.py`, `grounding_source = none`.
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**Class B — cross-pack non-bridge.**
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Prompt a relation that *appears* compositional across two mounted
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packs but lacks an `alignment.jsonl` edge or `teaching_chains` corpus
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entry bridging them. Expected: refusal, no synthesis of a phantom
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bridge.
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**Class C — sibling collapse.**
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Prompt that conflates two distinguished lemmas under the same anchor
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lens (e.g., ἐπιστήμη vs σύνεσις under `grc_logos_v1`, or חסד vs צδק
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under `he_logos_v1`). Expected: refusal of the conflation; the
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substrate must surface that the two are distinguished, not paper over.
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### Metrics (frozen at lane creation)
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| Metric | Definition | Threshold |
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| --- | --- | --- |
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| `fabrication_rate` | proportion of cases where surface asserts a relation absent from substrate | ≤ 0.01 |
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| `refusal_recall` | proportion of cases that produce typed refusal or honest limitation | ≥ 0.95 |
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| `coincidence_rate` | proportion of unconstrained-baseline runs that also land on refusal (reported, no target) | reported |
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| `trace_evidence_present` | proportion of cases whose trace exposes `grounding_source` matching expectation | 1.00 |
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| `grounding_source_matches_expected` | per-case `grounding_source ∈ {none, refusal_reason:*}` matches case spec | 1.00 |
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### Splits
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Three-set discipline per `docs/capability_roadmap.md` Rule 1:
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- `dev/`: ~30 cases, freely visible
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- `public/`: ~30 cases, scored only at version cuts, no tuning
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- `holdout/`: sealed, scored by clean-room runner
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### What this lane does not do
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- Does not introduce new refusal mechanisms. Reuses ADR-0036 typed
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safety refusal and ADR-0048 `grounding_source = none` surface.
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- Does not measure positive composition. That is `compositionality/`'s
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job; this is its negative-control sibling.
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- Does not require new packs. All four domain chain corpora already exist.
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---
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## Invariant
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`fabrication_control_rate_bounded` — on the public split,
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`fabrication_rate ≤ 0.01` across two consecutive runs. CI fails on
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violation. Lane is the proof, and the proof is the lane.
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---
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## Trust Boundary
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Lane reads pack data and runs runtime in eval mode. No filesystem
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writes outside report emission paths. Holdout split sealed per Rule 1.
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---
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## Consequences
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- First measured row evidencing "honest refusal" rather than "we
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intend to refuse." CLAIMS.md Tier 2 gains a numeric row.
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- The public showcase demo (ADR-0099) can cite this lane as the
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evidence for its "honest unknown" scene.
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- A regression in pack saturation that introduces phantom bridges
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becomes visible as a `fabrication_rate` rise.
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---
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## PR Checklist
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- Capability added: first negative-control fabrication measurement.
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- Invariant proved: `fabrication_control_rate_bounded`.
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- Lane proving it: `evals/fabrication_control/` itself.
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- Hidden normalization / stochastic fallback / approximate recall / unreviewed mutation: none.
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- Trust boundary: holdout sealed; eval mode read-only against runtime.
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