import type { SqliteAdapter as Database } from '../db/sqlite-adapter.js';
import type { ZeroCostModelBreakdown } from '../types/index.js';
/** Tag rows that carry no machine_id with the current machine id. */
export declare function backfillMachineId(db: Database): {
    requests: number;
    sessions: number;
};
export interface RecalculateResult {
    fixed: number;
    total: number;
    buckets: ZeroCostModelBreakdown[];
}
/** Re-price zero-cost requests from the pricing table; re-rolls touched sessions. */
export declare function recalculateZeroCostRequests(db: Database): Promise<RecalculateResult>;
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