}

function formatStructuredContextRelation(value: unknown): string | undefined {

const relation = normalizePromptMetadataString(value);

const relation = sanitizeTranscriptField(value);

if (relation === "before_current_message") {

return "before current message";

}

if (!isRecord(value)) {

return undefined;

}

const messageId = normalizePromptMetadataString(value["message_id"]);

const sender = normalizePromptMetadataString(value["sender"]) ?? "unknown sender";

const messageId = sanitizeTranscriptField(value["message_id"]);

const sender = sanitizeTranscriptField(value["sender"]) ?? "unknown sender";

const timestamp = formatConversationTimestamp(value["timestamp_ms"], envelope);

const replyToId = normalizePromptMetadataString(value["reply_to_id"]);

const mediaType = normalizePromptMetadataString(value["media_type"]);

const mediaRef = normalizePromptMetadataString(value["media_ref"]);

const replyToId = sanitizeTranscriptField(value["reply_to_id"]);

const mediaType = sanitizeTranscriptField(value["media_type"]);

const mediaRef = sanitizeTranscriptField(value["media_ref"]);

const body = sanitizeTranscriptField(value["body"]);

const details = [

messageId ? `#${messageId}` : undefined,

if (lines.length === 0) {

return undefined;

}

const label = normalizePromptMetadataString(entry.label) ?? "Chat window";

const label = sanitizeTranscriptField(entry.label) ?? "Chat window";

const relation = formatStructuredContextRelation(entry.payload["relation"]);

const order = normalizePromptMetadataString(entry.payload["order"]);

const order = sanitizeTranscriptField(entry.payload["order"]);

const qualifiers = ["untrusted", order, relation].filter(Boolean).join(", ");

return [`${label} (${qualifiers}):`, ...lines].join("\n");

}