core/docs/decisions

Architecture Decision Records

This directory contains the Architecture Decision Records (ADRs) for the CORE project.

ADRs record significant architectural decisions: what was decided, why, what alternatives were considered, and what consequences follow. They are permanent records — superseded ADRs are archived, not deleted.

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Index

ADR	Title	Status
ADR-0091	Domain Pack Contract v1	Accepted (2026-05-22)
ADR-0092	Reviewer Registry v1	Accepted (2026-05-22)
ADR-0093	Domain Pack Contract v1 implementation	Accepted (2026-05-22)
ADR-0094	Proposal Source Provenance	Accepted (2026-05-22)
ADR-0095	Miner-Sourced Teaching Proposals	Accepted (2026-05-22)
ADR-0096	Fabrication-Control Eval Lane	Accepted (2026-05-22)
ADR-0097	Mathematics-Logic Reasoning-Capable Ratification	Accepted (2026-05-22)
ADR-0098	Demo Composition Contract	Accepted (2026-05-22)
ADR-0099	Public Showcase Demo	Accepted (2026-05-22)
ADR-0100	Physics Reasoning-Capable Ratification	Accepted (2026-05-22)
ADR-0101	Systems-Software Reasoning-Capable Ratification	Accepted (2026-05-22)
ADR-0102	Hebrew-Greek Textual-Reasoning Reasoning-Capable Ratification	Accepted (2026-05-22)
ADR-0103	Fluency Lane Attachment for ADR-0102	Accepted (2026-05-22)
ADR-0104	Curriculum-Sourced Teaching Proposals	Accepted (2026-05-22)
ADR-0105	Sealed Holdout Encryption via age	Accepted (2026-05-22)
ADR-0106	Expert-Demo Promotion Contract	Accepted (2026-05-22)
ADR-0107	mathematics_logic Expert-Demo Promotion — Deferred	Accepted (2026-05-22)
ADR-0108	Proposed-ADR Sequencing Post-ADR-0105	Accepted (2026-05-22)
ADR-0109	Lane-Shape-Aware Thresholds (ADR-0106 Amendment)	Accepted (2026-05-22)
ADR-0110	mathematics_logic Expert-Demo Promotion	Accepted (2026-05-22)

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Current frontier

The ADR-0091..0105 slate is fully accepted and mechanically evidenced:

• Domain Pack Contract v1 — ADR-0091
• Reviewer Registry v1 — ADR-0092
• Domain Contract v1 enforcement — ADR-0093
• Proposal Source Provenance — ADR-0094
• Miner-Sourced Teaching Proposals — ADR-0095
• Fabrication-control negative eval lane — ADR-0096
• mathematics_logic reasoning-capable ratification — ADR-0097
• Demo Composition Contract — ADR-0098
• Public Showcase Demo — ADR-0099
• physics reasoning-capable ratification — ADR-0100
• systems_software reasoning-capable ratification — ADR-0101
• hebrew_greek_textual_reasoning multi-pack reasoning-capable ratification — ADR-0102
• Hebrew/Greek fluency lane attachment for ADR-0102 — ADR-0103
• Curriculum-Sourced Teaching Proposals — ADR-0104
• Sealed Holdout Encryption via age — ADR-0105

Seven lanes are SHA-pinned in scripts/verify_lane_shas.py and gated by the lane-shas GitHub Actions workflow:

• reviewer_registry
• domain_contract_validation
• miner_loop_closure
• curriculum_loop_closure
• fabrication_control_summary
• demo_composition
• public_demo

Proposed-but-unimplemented ADRs

Sequencing per ADR-0108. Listed in priority order:

1. ADR-0080 — Contemplation Loop. Sandboxed, read-only Phase 1 self-interrogation; emits SPECULATIVE findings from frontier_compare reports. Converts gap-finding from human-driven to system-emitted-and-reviewed.
2. ADR-0084 — Definitional Layer for Lexicon Packs. Optional per-entry definitional block. Deferred — value surfaces during a worked expert promotion that needs definitional depth.
3. ADR-0087 — Rhetorical Style Axis. A third substantive selection axis sibling to anchor-lens. Lowest current priority — no active downstream consumer; register + anchor-lens already demonstrate the orthogonality pattern.

ADR-0110 has landed — mathematics_logic is the first domain at expert_demo=true. The remaining three ratified domains (physics, systems_software, hebrew_greek_textual_reasoning) need their own promotion ADRs.

Open candidate directions (no ADR yet)

• Multi-reviewer holdout governance and threshold signing. ADR-0105 seals holdout payloads with a single recipient identity; multi-reviewer governance remains future work.

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Accepted reasoning-capable domains

Per ADR-0106, expert_demo is contract-gated, not threshold-only: a domain row may carry expert_demo=true only when a reviewer-signed expert_demo_claims entry exists whose evidence-bundle digest reproduces byte-for-byte. ADR-0107 attempted the first worked promotion and the contract refused; ADR-0109 amended the threshold rules; ADR-0110 then successfully promoted mathematics_logic (the first domain at expert_demo=true). The other three ratified domains remain at reasoning-capable pending their own promotion ADRs.

Domain	Ratification ADR	Pack(s)	Evidence summary
mathematics_logic	ADR-0097 + ADR-0110	en_mathematics_logic_v1	All nine ADR-0091 predicates pass; ledger row is expert-demo (first such promotion, ADR-0110); all three attached lanes meet ADR-0109 shape thresholds on public + holdout.
physics	ADR-0100	en_physics_v1	All nine predicates pass; causal/modal operator coverage meets threshold; ledger row is reasoning-capable; expert_demo remains false.
systems_software	ADR-0101	en_systems_software_v1	All nine predicates pass; transitive/causal operator coverage meets threshold; ledger row is reasoning-capable; symbolic_logic is the v1 closest-fit eval lane.
hebrew_greek_textual_reasoning	ADR-0102 + ADR-0103	grc_logos_micro_v1, grc_logos_cognition_v1, he_logos_micro_v1, he_core_cognition_v1	First multi-pack ratification; all four packs carry uniform contract fields; causal/contradiction operator coverage meets threshold; ADR-0103 attaches Hebrew and Koine Greek fluency lanes with dev/public/holdout coverage.

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ADR chain notes

Forward Semantic Control closure — ADR-0022 through ADR-0026

ADR-0022 through ADR-0026 form a single coherent chain that closes forward semantic control as a non-stochastic, replay-deterministic, trace-evidenced mechanism.

1. ADR-0022 establishes AdmissibilityRegion and the contract that a region restricts the admissible token set at generation time.
2. ADR-0023 records proof evidence that the admissibility region is honored at the region-intersection level.
3. ADR-0024 adds destination-side per-step admissibility and honest InnerLoopExhaustion when all admissible candidates are rejected.
4. ADR-0025 adds rotor/frame admissibility when a region carries a frame_versor.
5. ADR-0026 replaces static threshold tuning with ranked admissibility and a scale-invariant margin gate.

Runtime contracts for the chain are pinned in docs/runtime_contracts.md.

Pack-layer chain — ADR-0027 through ADR-0045

ADR-0027 through ADR-0045 establish the identity / safety / ethics pack architecture with deterministic remediation, audit completeness, telemetry, operator readout, audit-tour demo, pack measurements, a worked-example medical ethics pack, and long-context comparison measurements.

Evidence-governed domain chain — ADR-0091 through ADR-0103

ADR-0091 through ADR-0103 establish the current domain-ratification substrate:

contract definition
    ↓
reviewer trust root
    ↓
validator / ledger enforcement
    ↓
negative-control fabrication lane
    ↓
reasoning-capable domain ratification
    ↓
language-specific fluency lane attachment

No domain claim should be treated as mature merely because a pack exists. Capability status belongs to the generated ledger and its evidence predicates.

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Session Logs

Session logs record the decisions and rationale from individual working sessions. They are not ADRs — they are the narrative record that informed the ADRs.

Date	File
2026-05-12	SESSION-2026-05-12.md
2026-05-12 (addendum)	SESSION-2026-05-12-b.md
2026-05-12 (language packs)	SESSION-2026-05-12-language-packs-addendum.md
2026-05-13	SESSION-2026-05-13.md