export type CompactionLifecyclePhase = "before" | "after";
export interface CompactionLifecycleEventSample {
    phase: CompactionLifecyclePhase;
    at: number;
    sessionId?: string;
    accountId?: string;
    agentId?: string;
    channelProvider?: string;
}
export interface CompactionLifecycleSnapshot {
    scope: "plugin-runtime";
    trackedSince: number;
    totalBefore: number;
    totalAfter: number;
    unbalancedSessions: number;
    activeSessions: number;
    lastBeforeAt: number | null;
    lastAfterAt: number | null;
    lastBefore: CompactionLifecycleEventSample | null;
    lastAfter: CompactionLifecycleEventSample | null;
    recentEvents: CompactionLifecycleEventSample[];
}
export declare function recordCompactionLifecycle(phase: CompactionLifecyclePhase, event?: Record<string, unknown>, ctx?: Record<string, unknown>): boolean;
export declare function getCompactionLifecycleSnapshot(): CompactionLifecycleSnapshot;
export declare function resetCompactionLifecycleTracker(): void;
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