feat(Semantics/Numerals): numeral predication as interval preimage#18
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Adds the set-theoretic numeral-predication core:
Comparison.interval(the order-interval a comparison selects),Numeral.over c μ n := μ ⁻¹' c.interval n(one operation unifying cardinals, measure phrases, and classifier counting — the measureμvaries), andboundary_mem(Class A/B = whether the interval is closed at its endpoint).classA_excludes_bare_world/classB_includes_bare_worldare re-derived as corollaries ofboundary_mem.