Interface LongitudinalDriftReport

interface LongitudinalDriftReport {
    agentId: string;
    baselineMean: number;
    delta: number;
    deltaPercent: number;
    direction: "insufficient-data" | "improving" | "degrading" | "stable";
    predictedScore30Days: number;
    recentMean: number;
    recentVolatility: number;
    sampleSize: number;
    severity: "low" | "high" | "medium" | "none";
    slopePer30Days: number;
    slopePerDay: number;
}