export interface TracePartitionConfig {
    /** Days of hot partitions kept for `trace` / `trace_step`. */
    readonly hotRetentionDays: number;
    /** Days of cold partitions kept for `trace_retained` / `trace_step_retained`. */
    readonly errorRetentionDays: number;
    /** Days of audit partitions kept for `audit_record` — independent of trace storage. */
    readonly auditRetentionDays: number;
    /** Days of partitions pre-created ahead of today so writes never race creation. */
    readonly partitionLeadDays: number;
}
/** A single day partition: which parent it belongs to, its name, and its day. */
export interface DayPartition {
    readonly parent: string;
    readonly name: string;
    readonly day: string;
}
export interface PartitionPlan {
    readonly create: readonly DayPartition[];
    readonly drop: readonly DayPartition[];
}
export interface PartitionPlanInput {
    readonly now: Date;
    readonly config: TracePartitionConfig;
    /** Existing child partition names per parent table, as found in the catalog. */
    readonly existing: ReadonlyMap<string, ReadonlySet<string>>;
}
/**
 * Reconcile desired partitions against existing ones.
 *
 * For each table the desired set spans `[today - retentionDays, today + leadDays]`.
 * `create` is every desired day with no partition yet. `drop` is every existing
 * partition whose day has fallen before the retention cutoff — retention is the
 * dropping of day partitions, never a DELETE. Catalog children that don't parse
 * as our day partitions are left untouched.
 */
export declare function planPartitions(input: PartitionPlanInput): PartitionPlan;
//# sourceMappingURL=plan.d.ts.map