The ratified capability, through the existing mutation owner only:
- teaching/proof_promotion.py — pure decider. Fresh-reads every premise AND
the claim from the store (claim_entry_index; forms never proposer-supplied),
strict status compares (no parse-defaulting), reading_certified must be the
boolean True, engine certification via the pinned deductive engine,
proposer_payload accepted and provably never read (del before use; poisoned-
mapping test), certificate digest emitted for D4 trace-hash folding. Zero
mutation; zero vault.store calls; zero status writes (proven with the
INV-21/INV-29 detectors themselves).
- vault/store.py::apply_certified_promotion — the single transition site.
Independently re-verifies: byte-for-byte replay under DEDUCTIVE_ENGINE_PIN,
promotion_positive, live claim form/reading/status cross-checks, live
premise form/reading/status cross-checks (staleness refuses). Fabricated or
tampered certificates flip nothing; authority is live store state plus
recomputation, never the artifact.
- generate/proof_chain/engine_pin.py — DEDUCTIVE_ENGINE_PIN mirrors the
deductive_logic_v1 lane SHA; sync pinned by AST test against
scripts/verify_lane_shas.py.
- Consistency fix found in lookback: both promotion sites now stamp
epistemic_state alongside epistemic_status (the ADR-0148 site left the
stored state tag stale; recall recomputed it, but the stored key lied).
Obligations: all six strict-xfail markers retired and live (O1/O2
strengthened to prove the transition through the vault owner); the
module-existence pin deleted per its own docstring; the two remaining
honesty pins kept. INV-21 allowlist unchanged; INV-29 allowlist unchanged
({vault/store.py}); INV-29's 29c visibility floor raised 2 -> 3 to cover the
new site.
No runtime turn path calls promotion; the deterministic demo is PR D.
Validation: new suite 49 passed; obligations 8 passed (0 xfail remaining);
invariants 66 passed; certificate 27 passed; 0148 6 passed; epistemic 20
passed; smoke files green; lane SHAs verified.
§3.4 said promotion "requires a curator-mediated coherence judgment." That
over-states a necessity. ADR-0021 §3 only requires promotion be a function of
coherence with the reviewed field. For claims *deductively entailed* by
already-COHERENT facts, the entailment proof IS that coherence judgment and can
be machine-certified by the sound deductive_logic_v1 engine — the logical arm of
the "structural coherence metric" ADR-0021's v2 gap already names.
- position_paper.md §3.4: split "own asserted output" (no standing — kept) from
"deductively entailed from COHERENT facts" (proof = coherence judgment);
relocate review to the *reading*, not the deduction; flag the proof-carrying
path as specified-but-unwired with a link to the new issue.
- teaching/epistemic.py: the EpistemicStatus docstring claimed transitions are
"computed from coherence" — they are not; review_correction carries status as
a curator-supplied input. Docstring now states this honestly.
- docs/issues/proof-carrying-coherence-promotion.md: thorough spec for the
unbuilt capability (scope, the reading hazard, INV-21 impact, trust boundary,
falsification tests, phased plan, proposed ADR-0218).
No runtime behavior change. Green: test_epistemic_invariants,
test_epistemic_phase3_state_tagging, TestINV21OneMutationPath (15 passed).
ADR-0021 v1 schema land. epistemic_status is a position in the revision
graph, not a source-trust tier — coherence is the only admission signal.
Surfaces:
- teaching/epistemic.py: EpistemicStatus enum (COHERENT, CONTESTED,
SPECULATIVE, FALSIFIED); ADMISSIBLE_AS_EVIDENCE = {COHERENT}.
- PackMutationProposal.epistemic_status (default SPECULATIVE) + immutable
with_status() updater.
- ReviewedTeachingExample.epistemic_status (default SPECULATIVE);
orthogonal to acceptance per ADR §Schema impact.
- LexicalEntry.epistemic_status (default "coherent" for seed; absent in
JSONL is treated as the seed default — no retroactive tagging).
- compute_trace_hash + trace_hash_from_result + pipeline.py fold the
load-bearing proposal's epistemic_status into the trace hash so
replay detects different epistemic frames.
Non-hardening invariant (ADR-0021 §2): tests/test_epistemic_invariants.py
asserts no final/frozen/axiom/permanent flag on PackMutationProposal or
ReviewedTeachingExample, and EpistemicStatus contains no source-trust
tier names.
Docs: docs/runtime_contracts.md gains an Epistemic surface section.
Lanes green: smoke 27/27, teaching 10/10, packs 6/6, runtime 19/19,
cognition eval 100%.
