`binaryReferenceSex` was already the declared owner of the shrink from the
three stored values to the two a sex-split reference table has rows for, but
eight sites still narrowed inline — including a byte-for-byte private copy in
the effective-range resolver and a ternary 37 lines above a `toProfileSex`
call in the same file. Each of those is a place the fallback can drift.
Delete the copy, replace the ternaries, and name the pair once as
`BinaryReferenceSex` so a signature that needs it stops re-listing the two
literals. No behaviour changes: every site already resolved OTHER and "no
answer" to the same neutral or absent value, and the existing suites pass
untouched.
Marc-André Bombeck
36f525c465