Distillation

Date: Sep 16, 2026

• 🔴 (11:11) User asserted that failed output is never authoritative and must not reach accounting hooks.
• 🔴 (11:11) User asserted that failed usage/accounting never depends on client demand.
• 🟡 (11:11) In packages/gateway/src/pipeline.ts, unsuccessful Responses stream finalization changed from finish(false) to finish(false, finalizeUnsuccessfulResponsesAcc(state)), allowing failed-stream usage to be finalized independently of downstream client consumption.
• 🟡 (11:11) In packages/gateway/src/pipeline.ts, synthesized failed Responses now use created_at: state.createdAt ?? 0 instead of Math.floor(Date.now() / 1000) and expose PUBLIC_GATEWAY_ERROR instead of the private message "Upstream response stream failed".
• 🟡 (11:11) finalizeUnsuccessfulResponsesAcc(state) clears failed output authority by returning empty rawOutputItems, preventing failed output from reaching accounting hooks while retaining eligible failed-response usage accounting.