Distillation

Date: Sep 16, 2026

• 🟡 (15:51) User supplied the next implementation segment, approximately lines 11033–12174, continuing Responses streaming, recall continuation, retry/failure handling, terminal response construction, and foreground-response buffering.
• 🟡 (15:51) Visible continuation artifacts include preserveStreamedReasoning(contState, ci), handling for "response.function_call_arguments.done", continuationRetryBaseline.referenceIdentities, RecallContinuationFailure("parallel_recall"), continuationFollowUpInput.finalRecallRound, reserveSyntheticIdentity(nextSyntheticId, [...]), recallBudget.mustFinalizeNext(), safeEnqueue(chunk), transactionBaseline = undefined, projectResponsesInProgressEvent(parsed, state), mergeUsage(failedResponse.usage, transactionProviderUsage), and hiddenOutputIndices.
• 🟡 (15:51) Code comments distinguish tool-call ownership after continuation: calls may belong to the gateway’s continuation when recall-only, or to client-owned tools when mixed.
• 🟡 (15:51) Foreground response buffering defines MAX_FOREGROUND_RESPONSE_BYTES = 4 * 1024 * 1024; stream reads use readStreamChunk(reader, { signal }), collected chunks are combined with Buffer.concat(chunks), truncation sets header x-lore-body-truncated to "true", and the visible fallback error is { type: "server_error", message: "Gateway request failed" }.