Distillation

Date: Sep 16, 2026

• 🟡 (17:11) In packages/gateway/src/pipeline.ts:9678-9720, settleFollowUp() calls opts.runFollowUp() with resultText transformed by recallBudgetGuidance(input.resultText, input.finalRecallRound ? recallBudget.stopReason() : undefined). It races the operation against an abort promise, removes the abort listener in finally, cancels and releases late/result readers via cancelAndReleaseReader(..., signal.reason), and throws signal.reason when aborted.
• 🟡 (17:11) In packages/gateway/src/pipeline.ts:9721-9727, shiftedOutputIndex(index, offset) adds the two values and throws Error("Responses output_index overflow") if the result is negative or not a safe integer.
• 🟡 (17:11) In packages/gateway/src/pipeline.ts:9729-9794, emitTextItem(outputIndex, text, itemId = \msg_${state.id || "lore"}_${outputIndex}`)serializes a synthetic Responsesoutput_textitem into this ordered SSE sequence: 1.response.output_item.added, 2. response.content_part.added, 3. response.output_text.delta, 4. response.output_text.done, 5. response.content_part.done, followed by response.output_item.donebeyond the displayed excerpt. The synthetic item is an assistantmessageinitially markedin_progress; its text part uses content_index: 0andannotations: []`.
• 🟡 (17:12) Additional inspected code in packages/gateway/src/pipeline.ts includes principal transport-failure classification/retry handling, RecallContinuationFailure, classifyPrincipalFailure(err), hidden-recall baseline restoration, terminal response.failed handling, stream cleanup including clearTimeout(keepaliveTimer), and response-stream construction.
• 🟡 (17:12) packages/gateway/src/pipeline.ts:11763 defines MAX_RELAY_RETRY_AFTER_MS = 300_000; nearby boundedRetryAfter(value: string) bounds relay Retry-After handling.