Interface SISession

interface SISession {
    sessionId: string;
    createdAt: string;
    lastActiveAt: string;
    identity: any;
    mediaBuyId?: string;
    offeringId?: string;
    offeringToken?: string;
    placement?: string;
    negotiatedCapabilities?: SICapabilities;
    status: "active" | "complete" | "terminated" | "pending_handoff";
    messageCount: number;
    conversationHistory: {
        role: "user" | "brand";
        content: string;
        timestamp: string;
    }[];
    metadata?: Record<string, unknown>;
}