jolt unifies every integer as one exact-integer type, so (byte/short/int n)
report Long not Byte/Short/Integer and instance? Byte is false. Confirmed
substrate-inherent: (byte 5) is a Chez immediate identical? to 5 (nothing to
tag, numbers carry no metadata), and arithmetic compiles to a raw Chez + that a
boxed narrow type would crash. Value/arithmetic/equality are correct.
Certify the value-correctness (= to plain int, arithmetic promotes, is a Number)
and pin the class/instance? divergence under a new :integer-box-model category.
Data/doc only.
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