* docs(adr-0184): scope the distinct-unit product rule — cut the product-of-all over-commit
The 47-refusal coverage diagnostic surfaced that the headline 3/47/0 (serving
recognizer) hides the sealed comprehension reader's real state: resolve_pooled over
the 50 real train_sample cases is 2 correct / 13 WRONG / 35 refused. The confuser
probe's wrong=0 was a misleading proxy — all 13 real wrongs are the whole-text
product-of-all, the unique complete candidate, committed unopposed.
Scopes the first lever, decided by MEASURING candidate refusal rules against the real
metric (correct up, wrong down on train_sample):
baseline 2 / 13 / 35
distinct-unit product (chosen) 2 / 8 / 40 <- cuts 5, zero coverage loss
product spans >1 clause 1 / 4 / 45 <- destroys correct 0003
drop all products 0 / 2 / 48
The distinct-unit rule: multiply/divide may compose DISTINCT units but a multiply
step whose operand repeats a non-empty unit already in the product (apples x apples,
cards x cards) is unit-incoherence -> refuse (unit^2 is never the answer). Empty-unit
operands exempt (0003 multiplies a blank-unit 0.75). Dimensional, not lexical
(ADR-0165-safe); refines verify.py clause 3 shared by self_verifies + classify.
Honest scope: 13->8, NOT 0. The remaining 8 are distinct-unit products in the wrong
shape (rate problems) = cue precision (ADR-0177 CP-2b), the next lever, NOT to be
faked with a per-case rule. Establishes the real scoreboard (resolve_pooled over
train_sample) and notes the ratification bridge (ADR-0175 Phase 5) as the separate
dependency for any of this to reach the serving headline.
Spec only; serving 3/47/0 untouched (verify is not on the serving path).
* feat(adr-0184): distinct-unit product rule — sealed reader real-GSM8K wrong 13->8
Cuts the over-eager product-of-all on real GSM8K. The sealed comprehension reader
(resolve_pooled over train_sample) was 2 correct / 13 WRONG / 35 refused; all 13 are
the whole-text product-of-all committed unopposed (0042->2.4M, 0048->19200,
0001->14400). This is the first lever measured against the REAL metric (resolve_pooled
over train_sample), not the curated confuser count.
Mechanism (verify._is_repeated_unit_product + classify_derivation downgrade):
a pure multiplicative chain whose operands repeat a non-empty unit forms unit^2
(apples x apples, cards x cards) -- never the answer; it is the product-of-all
multiplying independent groups. Such a product is classified `exempt`
(commit-INELIGIBLE), NOT removed. Empty units exempt (0003 multiplies blank-unit
0.75); divide exempt (feet/feet = legitimate count). Dimensional, not lexical
(ADR-0165-safe).
Implementation finding (folded into ADR §3.1): the naive version put the predicate
in the shared _base_reasons gate, which DROPPED the product and regressed the
confuser probe 1->3 -- the disguised-polarity 0001/0003 refuse only because the
coins x coins product DISAGREES with the coins + coins accumulation reading; dropping
it unmasked the additive reading as a unique wrong commit (80/30). The fix is the
downgrade: keep it as a commit-ineligible `exempt` candidate so it still forces the
disagreement. Pinned by test_downgrade_not_removal_preserves_disagreement_refusal.
Evidence (sealed lane; chat/ does not import verify -> serving frozen):
- resolve_pooled over train_sample: 2 correct / 8 wrong / 40 refused (was 2/13/35);
the 5 repeated-unit products (0001/0017/0042/0045/0048) now refuse, 0003/0021 kept.
- confuser probe: wrong unchanged (no 0001/0003 regression), positives still solve.
- serving train_sample 3/47/0 and practice (accumulation + search) 3/47/0
byte-identical; self_verifies/_base_reasons unchanged so search lanes are untouched.
- 171 derivation/pool/verify tests + 40 architectural invariants green.
Honest scope: 13->8, NOT 0. The remaining 8 (0011/0016/0018/0019/0025/0028/0032/0047)
are distinct-unit products in the wrong shape (rate problems) = cue precision
(ADR-0177 CP-2b), the next lever -- not to be faked with a per-case rule. Carries the
corrected ADR-0184 (supersedes the spec-only #484).
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