export interface IngestionInventoryCandidate {
    externalId: string;
    sourceModifiedAt?: string;
    metadata?: Record<string, unknown>;
}
export interface IngestionHydrationPolicy {
    selectedExternalIds?: readonly string[];
    canonicalExternalIds?: readonly string[];
    pinnedExternalIds?: readonly string[];
    recentWindowMonths?: number;
    hydrateAll?: boolean;
    now?: Date;
}
export interface IngestionHydrationSelection<T> {
    selected: T[];
    deferred: T[];
    reasons: Record<string, "confirmed" | "canonical" | "pinned" | "recent" | "undated" | "all">;
}
export declare function selectInventoryForHydration<T extends IngestionInventoryCandidate>(inventory: readonly T[], policy?: IngestionHydrationPolicy): IngestionHydrationSelection<T>;
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