.filter((value): value is string => typeof value === "string" && value.trim().length > 0);

}

function createAcpRecallPrompt(liveAgent: LiveAcpAgent): string {

function createAcpRecallPrompt(

liveAgent: LiveAcpAgent,

followupToken: string,

recallNonce: string,

): string {

const recallToken = `ACP-BIND-RECALL-${recallNonce}`;

if (liveAgent !== "claude") {

return "Please include the exact token from your immediately previous assistant reply.";

return `Please include exactly these two tokens in your reply: ${followupToken} ${recallToken}.`;

}

return "Reply with exactly the token from your immediately previous assistant reply and nothing else.";

return `Reply with exactly these two tokens and nothing else: ${followupToken} ${recallToken}`;

}

function createAcpMarkerPrompt(liveAgent: LiveAcpAgent, memoryNonce: string): string {

const conversationId = `user:${slackUserId}`;

const accountId = "default";

const followupNonce = randomBytes(4).toString("hex").toUpperCase();

const recallNonce = randomBytes(4).toString("hex").toUpperCase();

const memoryNonce = randomBytes(4).toString("hex").toUpperCase();

clearRuntimeConfigSnapshot();

client,

sessionKey: originalSessionKey,

idempotencyKey: `idem-memory-${attempt}-${randomUUID()}`,

message: createAcpRecallPrompt(liveAgent),

message: createAcpRecallPrompt(liveAgent, followupToken, recallNonce),

originatingChannel: "slack",

originatingTo: conversationId,

originatingAccountId: accountId,

const recallAssistantText = recallHistory.matchedAssistantText;

if (liveAgent === "claude") {

expect(recallAssistantText).toContain(followupToken);

expect(recallAssistantText).toContain(`ACP-BIND-RECALL-${recallNonce}`);

}

logLiveStep("bound session transcript retained the previous token");

const recallAssistantCount = extractAssistantTexts(recallHistory.messages).length;

sessionKey: originalSessionKey,

idempotencyKey: `idem-image-${attempt}-${randomUUID()}`,

message:

"Read the large word printed at the bottom of the attached image. " +

"Reply with that word in lowercase and nothing else.",

"What animal is drawn in the attached image? Reply with only the lowercase animal name.",

originatingChannel: "slack",

originatingTo: conversationId,

originatingAccountId: accountId,

logLiveStep("bound session classified the probe image");

}

const imageAssistantCount = imageHistory

? extractAssistantTexts(imageHistory.messages).length

: markerAssistantCount;

const cronProbe = createLiveCronProbeSpec({

agentId: liveAgent,

sessionKey: spawnedSessionKey,

});

logLiveStep(`cron mcp turn completed (attempt ${String(attempt + 1)})`);

let cronHistory: Awaited<ReturnType<typeof waitForAssistantTurn>> | null = null;

let cronHistory: Awaited<ReturnType<typeof waitForAssistantText>> | null = null;

try {

cronHistory = await waitForAssistantTurn({

cronHistory = await waitForAssistantText({

client,

sessionKey: spawnedSessionKey,

minAssistantCount: imageAssistantCount + 1,

timeoutMs: liveAgent === "claude" ? 90_000 : 45_000,

contains: cronProbe.name,

});

} catch {

logLiveStep("cron assistant reply not observed yet; relying on CLI verification");