Distillation

Date: Sep 16, 2026

• 🔴 (15:43) User specified that Responses reconstruction must replace accumulated text with the final version because the final version is more reliable.
• 🟡 (15:43) User supplied the finalizedResponsesMessageContent, Responses accumulator-state initialization, and applyResponsesEvent implementation around lines 505-823 of packages/gateway/src/stream/openai-responses.ts, covering output-item creation, text/refusal deltas and finalization, function-call argument accumulation, terminal events, status handling, and usage validation.
• 🟡 (15:43) applyResponsesEvent permits only the provider’s quota event to cross buffered reconstruction, tracks terminal state as response.completed or the applicable terminal event, maps incomplete status details, and reports malformed Responses usage when token values fail validation.