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bbe5c78f4d
* fix(executors): strip redundant oneOf matching sibling enum
The Codex private Responses endpoint intermittently returns a 502 upstream_empty_response for tool parameters that combine oneOf:[{const,...}] with a sibling enum containing the same value set.
When the const and enum sets match exactly, oneOf adds no constraint beyond enum. Add stripRedundantOneOfConstEnum to normalizeCodexTools to remove only this semantically redundant form.
The schema-aware recursive walker requires non-empty, unique string const branches containing annotations only, string enum values, and an exact set match. It preserves bare oneOf[const], narrowing or non-matching sets, type-discriminated oneOf, empty oneOf, non-string values, and anyOf/allOf.
Run the normalization after stripUnsupportedRegexPatterns and before assigning tool.parameters. Add focused regression coverage for matching, non-matching, nested, immutable, and Chat-to-Responses cases.
* docs(changelog): update PR number in changelog fragment
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Co-authored-by: Vasily Larin <larin.vas@outlook.com>