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Type-mixed comparisons were silently inconsistent:
<("hello", 5) => no result, no error (silent false)
<(a, 5) => raises "Expected number, got symbol"
Both should fail loudly with a comprehensible message. Added
dl-compare-typeok?: <, <=, >, >= now require both operands to share
a primitive type (both numbers or both strings) and raise a clear
"comparison <op> requires same-type operands" error otherwise.
`!=` is exempted because it's the polymorphic inequality test
built on dl-tuple-equal? — cross-type pairs are legitimately unequal
and the existing semantics for that case match user intuition.
2 new regression tests; conformance 267/267.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>