Distillation

Date: Sep 16, 2026

• 🔴 (15:46) User asserted that sparse numeric identities “can never need more address space than the …” (exact visible fragment), as implementation rationale near line 2127.
• 🔴 (15:46) User asserted that “index + 1 always changes the value.” (near line 2130).
• 🟡 (15:46) User supplied additional Responses-stream code with helpers including isRecord(), codexEventItemKind(), validateCodexOutputItem(), and normalizeCodexDataEvent(). The code validates output/item indexes and normalized item identities, uses normalized.callId || normalized.id as the previous effective identity, preserves a complete final raw item when ChatGPT omits fields, tracks terminal content indexes, and handles events including "response.done", "response.incomplete", "response.failed", and "response.function_call_arguments.done".
• 🟡 (15:46) The supplied stream code enables fatal UTF-8 handling with fatalUtf8: opts.validation !== undefined and includes terminal-policy options allowFailureTerminal and requireCompletedTerminal.