The first comprehension->structure compiler: evals/deductive_logic/grounding.py
lowers a typed finite-entity problem (finite entities + unary predicates +
single-variable universal rules) into the propositional regime the ADR-0206
entailment operator decides, refusal-first with a closed typed reason vocabulary
(unsafe_symbol / unknown_entity / unsupported_predicate_arity / unsupported_
quantifier / malformed_case / empty_case) and collision-safe atom slugging.
finite_entity/v1/cases.jsonl: 8 cases with INDEPENDENT (oracle-derived) gold
(4 entailed, 2 unknown, 1 refuted, 1 refused) — chained rules, conjunctive
bodies, negative heads, inconsistent premises. 20 tests gate engine==oracle==gold.
This is the second diversity-panel domain (distinct comprehension, same checkable
substrate) — the universal-structure thesis validated on a different problem shape,
with the anti-overfit >=2-domain discipline now live.
Phase 1.5 finding recorded: a clean geometric/algebraic propositional decoder
agrees 716/716 with the oracle but is O(2^n) (enumeration-class), so logic is the
wrong first domain for field-as-reasoner; the wedge redirects to quantitative-
relational structure where the field is the natural non-redundant decoder.
3e2a52870d