});

const timedOutDuringPrompt =

timedOut && !timedOutDuringCompaction && !timedOutDuringToolExecution;

const finalAssistantStopReason = (sessionLastAssistant?.stopReason ?? "")

.trim()

.toLowerCase();

const recoveredFinalAssistantTextAfterPromptTimeout =

timedOutDuringPrompt &&

["completed", "end_turn", "stop"].includes(finalAssistantStopReason)

? (finalAssistantVisibleText ?? finalAssistantRawText)?.trim()

: undefined;

const payloadAlreadyContainsRecoveredFinalAssistant =

recoveredFinalAssistantTextAfterPromptTimeout

? (payloadsWithToolMedia ?? []).some(

(payload) =>

payload?.isError !== true &&

payload?.isReasoning !== true &&

typeof payload.text === "string" &&

payload.text.trim() === recoveredFinalAssistantTextAfterPromptTimeout,

)

: false;

const recoveredFinalAssistantPayloadsAfterPromptTimeout =

recoveredFinalAssistantTextAfterPromptTimeout &&

!payloadAlreadyContainsRecoveredFinalAssistant

? [{ text: recoveredFinalAssistantTextAfterPromptTimeout }]

: undefined;

const hasSuccessfulFinalAssistantAfterPromptTimeout =

timedOutDuringPrompt &&

Boolean(

payloadAlreadyContainsRecoveredFinalAssistant ||

recoveredFinalAssistantPayloadsAfterPromptTimeout?.length,

);

const hasPartialAssistantTextAfterPromptTimeout =

timedOutDuringPrompt &&

(attempt.assistantTexts ?? []).some((text) => text.trim().length > 0) &&

// Timeout aborts can leave the run without payloads or with only a

// partial assistant fragment. Emit an explicit timeout error instead,

// preserving any tool payloads that succeeded before the timeout.

if (timedOutDuringPrompt && !hasMessagingToolDeliveryEvidence(attempt)) {

if (

timedOutDuringPrompt &&

!hasSuccessfulFinalAssistantAfterPromptTimeout &&

!hasMessagingToolDeliveryEvidence(attempt)

) {

const defaultTimeoutText = idleTimedOut

? "The model did not produce a response before the model idle timeout. " +

"Please try again, or increase `models.providers.<id>.timeoutSeconds` for slow local or self-hosted providers. " +

timedOut,

attempt,

});

const payloadsForTerminalPath = payloadsWithToolMedia?.length

? payloadsWithToolMedia

: silentToolResultReplyPayload

? [silentToolResultReplyPayload]

: payloadsWithToolMedia;

const payloadsForTerminalPath = recoveredFinalAssistantPayloadsAfterPromptTimeout

? recoveredFinalAssistantPayloadsAfterPromptTimeout

: payloadsWithToolMedia?.length

? payloadsWithToolMedia

: silentToolResultReplyPayload

? [silentToolResultReplyPayload]

: payloadsWithToolMedia;

const payloadCount = payloadsForTerminalPath?.length ?? 0;

const emptyAssistantReplyIsSilent = shouldTreatEmptyAssistantReplyAsSilent({

allowEmptyAssistantReplyAsSilent: params.allowEmptyAssistantReplyAsSilent,