Distillation

Date: September 16, 2026

• 🟡 (22:38) Continued packages/gateway/src/pipeline.ts inspection covered response.output_item.done validation for function calls, including requiring function identity and throwing Responses output_item.done missing function identity for index ${outputIndex}.
• 🟡 (22:38) Message completion validation iterates tracked content state and rejects incomplete parts, including cases where contentState.partAdded is true but contentState.partDone is false; completed content is reconciled using partValue(...).
• 🟡 (22:38) Terminal response validation checks optional response.status, requires terminal status values to be strings contained in terminalStatuses, validates optional terminal details, and then sets lifecycle.terminal = true.
• 🟡 (22:38) Reasoning completion logic operates only when raw?.type === "reasoning" and tracked lifecycle.reasoning state exists; it validates raw summary parts and checks completion conditions involving summaryState.partDone.
• 🟡 (22:38) Terminal-output reconciliation compares actual output against expected streamed output, checks output lengths, and throws "Responses terminal output changed streamed item" when a terminal item differs from its streamed form.
• 🟡 (22:38) Public-validation reconciliation additionally enforces stream ordering through matchIndex !== expectedIndex, while reasoning items can be rebuilt with { ...actual, summary: completedSummary } and retained via preserveStreamedReasoning(acc, outputIndex).
• 🟡 (22:38) Output identity handling distinguishes response.output_item.added, recognizes identities in syntheticIdentities, and checks whether an item has fields beyond "type" and "id" using Object.keys(item).some((key) => key !== "type" && key !== "id").
• 🟡 (22:38) The inspected section includes separate Codex-only behavior guarded by opts.validation !== "codex" and public-only behavior guarded by opts.validation === "public".