2 commits

Author	SHA1	Message	Date
Shay	4c271f5e9f	feat(rate): R3 RateProblem model + rate gold + setup oracle (R3b) ... generate/rate_comprehension/model.py: RateProblem (quantity = rate × time, exactly one unknown == query; rate_unit fixes all three units by construction; structural guard refuses zero/two unknowns). evals/rate_oracle/: span-free signature, a 12-fixture gold (6 solved / 2 solver_refuses / 2... reader_refuses), closed expect+reason taxonomy, gold-validation runner + CLI. No reader yet — proves the ruler (12/12 valid). Gold shape gives the 6/0/6 target: 6 single-rate solved (forward + both inverses, non-temporal 'per box' included), 2 non-integer-inverse solver refusals, 4 reader refusals (unit mismatch minutes-vs-hour, missing time, combined rates, clock-time temporal). Off-serving. 9 oracle + 10 unit tests; per-branch meaningful-fail.	2026-06-07 23:01:25 -07:00
Shay	d9ebec7b70	feat(rate): R3 compound-unit primitive — the dimensional substrate (R3a) ... generate/rate_comprehension/units.py: BaseUnit + RateUnit (numerator/denominator) + the three single-rate compositions — rate_times_time (mile/hour × hour = mile; refuses mile/hour × minute), rate_from_quantity_over_time (mile ÷ hour = mile/hour), time_from_quantity_over_rate (mile ÷ mile/hour = hour; refuses dollar ÷ mile/hour). A non-composing op raises UnitError (the wrong=0 dimensional gate), never fabricates a unit. Deliberately tiny: bare-name units, no generic dimensional universe, no semantic unit-class typing, no unit conversion, no compound-of-compound. Fresh off-serving organ (generate/rate_comprehension/). 10 tests incl. all three refusals + consistent composition.	2026-06-07 22:57:13 -07:00