* feat(derivation): Workstream A inc 2 — frontier report + rate_with_currency apply_rate injection
- scripts/gsm8k_frontier_report.py + test (stable buckets; rate_with_currency surfaced)
- docs/recognizer-registry.md + math_candidate_graph.py comments repaired (current refusal doctrine; old skip-only marked historical)
- generate/math_roundtrip.py: add 'a','an' to RATE_ANCHORS (with doc update)
- generate/recognizer_anchor_inject.py: inject_rate_with_currency (narrow ProperName actor, Rate/apply_rate CandidateOperation, rejects unsafe); registered in _INJECTORS; module docs updated
- tests/test_*_rate_injection*.py + frontier test (8+ unit cases, confusers, synthetic wiring, real-report frontier pin)
- ratification doc (pre-code)
- lookback (post-impl, truthful)
All required local commands exercised (pytest green for new + prior extract/invariants; frontier script shows rate bucket; runner per brief; shas captured).
wrong=0 held. No sealed movement. Proxy still expected !passed (correct_min=10).
See ratification and lookback for scope, hazards, exact outputs.
* fix(derivation): dollar grounding, roundtrip proofs, stale comment, lookback commit, a/an containment, duplicate import
- math_roundtrip: add explicit 'dollar'/'dollars' + '$' branch in _unit_grounds (symmetric to cent) + doc alignment.
- tests: assert roundtrip_admissible True for the emitted rate cands; add a/an containment/confuser test (dollar unit only grounds with $ present); add lower-level _apply_rate solver reach test; remove conditional happy-paths that tolerated refusal; clean duplicate __future__.
- math_candidate_graph: update active stale comment (injector-empty now leads to explicit refusal, not drop/preserve-zero).
- Commit the Inc2 lookback (was local-only).
All per lead block list. New head will be pushed.
* fix(derivation): address remaining Inc2 blockers (locate_rate_verb via matcher token, dispatch test, lookback accuracy, narrow symbols, tests)
- recognizer_match: updated _CURRENCY_AMOUNT_RE + parsing to populate 'rate_anchor_token' localized to the rate span (prevents whole-sentence 'a' hazard from 'a lemonade stand').
- recognizer_anchor_inject: use 'rate_anchor_token' from anchor (with allowed-set check); fallback only if absent. Added Alexa-style confuser coverage.
- injector: narrowed _CURRENCY_SYMBOL_TO_UNIT to $ only for Inc2.
- tests: strengthened dispatch to require live-registry non-empty + roundtrip_admissible; added rate_anchor_token confuser test proving 'per' (not earlier 'a') is used; roundtrip asserts already present.
- lookback: updated to 10 files, 10+6 test counts, current head reality, shas/runner status exact, no rebaseline.
- math_candidate_graph comment already corrected in prior.
All Semantic Rigor / wrong=0 invariants preserved. New tip after push.
* fix(inc2): remove rate fallback to _locate_rate_verb; mandatory rate_anchor_token; hard 'for one cup' confuser; strengthen per-span test; update lookback
- injector: for currency_per_unit_rate, rate_anchor_token is now mandatory. Absent or invalid → immediate return ().
No call to _locate_rate_verb for these anchors.
- tests: _rate_anchor helper now passes rate_anchor_token.
- Added hard confuser test for 'Alexa ... for one cup.' — live registry + inject_from_match must emit ().
- Strengthened distracting-a ' per' test to unconditional: m not None, RATE_WITH_CURRENCY, len==1, matched_verb=='per', roundtrip_admissible True.
- lookback updated for 11 files, include matcher.py, rate_anchor_token centrality, exact counts after this.
* docs: pin exact final SHA in Inc2 lookback
* test(inc2): strengthen for_one_cup confuser to unconditional asserts on m and category
* docs(inc2): update lookback with exact test counts 18/6, 11 files, remove 9 files line, note final SHA after push
* docs(inc2): pin exact final SHA c4e83399... in lookback
* docs(inc2): pin exact final SHA 1129c502e6e8... in lookback
* docs(inc2): note no PR/CI yet in lookback
* docs(inc2): pin ultimate final SHA 7df0cac4... in lookback
* docs(inc2): final pin of SHA f0766b3b65... in lookback
* docs(inc2): ultimate pin of head deaa1a1e3fe0...
* docs(inc2): final pin of head ec1b5f32...
* docs(inc2): pin head 011e1e17... (the fixes tip)
5f6e9f5e08