ebfdc8b461
Stamp the §10 ruling record: Status Proposed→Accepted; four design rulings affirmed; honest-by-construction measurement (0 wrong / 26 correct / 24 refused on real GSM8K, PARITY vs symbolic fold) affirmed as the definitive outcome. Next arc selected: Tier-2 arithmetic (multi-entity/transfer/rate/comparison/ fraction). Acceptance-evidence status updated to RATIFIED. Doc-only.
69 lines
3.4 KiB
Markdown
69 lines
3.4 KiB
Markdown
# ADR-0249 — Acceptance Evidence
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**Status**: RATIFIED — ADR-0249 Accepted 2026-07-18 by Joshua Shay for commit `220039f7`
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**Date**: 2026-07-18
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**ADR**: `docs/adr/ADR-0249-reader-hamiltonian-compiler-composition-frontier.md`
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**Design record**: `docs/research/reader-hamiltonian-compiler-spike-2026-07-18.md`
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The reader→Hamiltonian compiler closes the composition frontier the
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generalized-lift instrument (ADR-0246 S4) was waiting to measure. Built in five
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smoke-gated phases, each merged under its own PR off `forgejo/main`.
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## Phases merged
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| Phase | PR | Merge commit | Module | Pins |
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|---|---|---|---|---|
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| P1 quantity kernel | #66 | `aca98d85` | `core/physics/quantity_kernel.py` | 35/35 |
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| P2 relation compiler | #67 | `2575d0d9` | `core/physics/relation_compiler.py` | 21/21 |
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| P3 CNF converter | #68 | `309e0ef6` | `evals/logic_cnf_compiler.py` | 32/32 |
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| P4 turn-program executor | #69 | `805752db` | `evals/turn_program.py` | 15/15 |
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| P5 instrument integration | this PR | — | `evals/generalized_lift_instrument.py` | 10/10 |
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Smoke (`uv run core test --suite smoke -q`) green at every phase boundary (176 passed).
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## Load-bearing results
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**Multi-step arithmetic by chained certified relaxation** (P4):
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`((5+3)*2)-4 = 12`, `(10/2+7)*3 = 36`, `(100-40)/4 = 15` — every turn
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`ground_state_certified`; accumulator flows as a field state, decoded once.
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**Real GSM8K dev holdout** (P5, sealed 50 cases, `evals/gsm8k_math/dev`):
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| Metric | Value |
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|---|---|
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| Tier-1 affine ingestible | 26 / 50 (52%) |
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| Corridor correct on ingested | 26 / 26 — **wrong = 0** |
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| Corridor vs symbolic fold | PARITY (delta = 0) |
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| Refused (multi-entity) | 24 / 50 — recorded Tier-2 frontier |
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The corridor solves real GSM8K problems it can ingest with zero wrong answers,
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and honestly refuses the rest. It does not beat arithmetic at arithmetic
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(PARITY is honest); the deliverable is real-data coverage + a decidable
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measurement, per the honest-NULL protocol.
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**Algebra verified in-tree** (P1): conformal line embedding + translator/dilator
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exactness checked against `algebra/cl41.py`'s own multiplication table (nullity
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< 3e-10; translator exact to f64 rounding; dilator sign convention pinned).
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**CNF soundness proved** (P3): for a 14-formula panel, the compiled CNF has the
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same ROBDD identity as the source (`canonicalize` oracle); end-to-end entailment
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agrees with `evaluate_entailment` gold, wrong = 0 on consistent premises.
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## Design corrections applied (honest register)
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- **Ring-2 is non-mutating.** `run_residual_protocol` is zero-bound (stage-5
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recertification refuses a moved witness), so it certifies fixed-state
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admissibility, not transitions. The turn ledger reuses the chain-integrity
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*pattern* (`TurnRecord` / `verify_turn_chain`), not the admission protocol.
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- **`cga_inner` is the wrong metric for versor states** — readback and quantity
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decode use `phase_correlation/2`, pinned in the P1 module.
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- **Scope note corrected** — the instrument's stale "no compiler exists" line is
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replaced with measured Tier-1 coverage + the multi-entity frontier.
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## What remains open (not claimed here)
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- Multi-entity / non-affine GSM8K (transfer, rate, comparison, fraction) —
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Tier-2, refused and recorded.
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- >5-atom deduction via ROBDD-partitioned turn programs — next arc.
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- ADR-0246 §3.7 admission-policy calibration — unchanged; no gate activated.
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- `generate/` ("core_logos") serve-path articulation upgrade — still deferred.
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