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Test, Build, and Deploy / test-build-deploy (push) Failing after 23s
arr[4294967295] = 'x' and arr.length = 4294967295 were padding the SX list with js-undefined for ~4 billion entries — instant timeout. Per ES spec, indices >= 2^32-1 aren't array indices anyway (regular properties, which we can't store on lists). Added (>= i 4294967295) bail clauses to js-list-set! and the length setter. built-ins/Array: 21/45 → 23/45 (5 timeouts → 2). conformance.sh: 148/148.