import type { DrizzleHandle } from '@opensip-cli/datastore/internal';
/** Hard ceiling for one bounded parent-Run retention transaction. */
export declare const MAX_RUN_RETENTION_BATCH_SIZE = 500;
/** Bounded outcome of one parent-Run retention transaction. */
export interface RunRetentionBatchResult {
    /** Rows inside the current count/age policy boundary before deletion. */
    readonly examined: number;
    /** Rows preserved because at least one RunStep still links a retained Session. */
    readonly protected: number;
    /** Unprotected parent Runs deleted by this bounded transaction. */
    readonly deleted: number;
    /** Eligible rows left for a later bounded batch. */
    readonly remainingEligible: number;
}
/** Shared immutable no-op outcome for disabled or empty retention passes. */
export declare const EMPTY_RUN_RETENTION_RESULT: RunRetentionBatchResult;
/** @throws {RangeError} When a retention batch size falls outside the bounded policy. */
export declare function requireRetentionBatchSize(value: number): number;
/** Count all persisted parent-Run rows inside the supplied transaction. */
export declare function countRunRows(tx: DrizzleHandle): number;
/** Delete one bounded oldest-first batch outside the newest retained parent Runs. */
export declare function pruneCountExcessRunBatch(tx: DrizzleHandle, keep: number, batchSize: number): RunRetentionBatchResult;
/** Delete one bounded oldest-first batch completed before the supplied cutoff. */
export declare function pruneAgedRunBatch(tx: DrizzleHandle, cutoff: number, batchSize: number): RunRetentionBatchResult;
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