/**
 * The store-backed {@link BenchSource}: reads tasks through the task data
 * accessor and observations and decisions through the brain accessor — the
 * core accessors only, never raw SQL on `.cleo/*.db` (T12495).
 *
 * @task T12495
 * @epic T12486
 */
import type { BenchSource } from './types.js';
/**
 * A {@link BenchSource} over the project's stores.
 *
 * Tasks include every status (cancelled and archived too); observations and
 * decisions include history (invalidated and superseded rows), because the
 * labels come from exactly those records.
 *
 * @param projectRoot - Project root whose stores are read.
 * @returns The source; each method opens its accessor lazily.
 */
export declare function createStoreBenchSource(projectRoot: string): BenchSource;
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