/**
 * Write guard for a project store whose twin collapse failed (T12535).
 *
 * When the collapse cannot run inside a domain bind, the bind still succeeds.
 * Reads are served from TEMP shadows holding the merged, bare-authoritative
 * view (see `twin-collapse.ts`), so nobody is locked out, but a write would
 * land in a shadow or in a twin that is not in step. This module is the
 * single question the write path asks: may this project's store be written?
 * The CLI dispatch pipeline asks it for every mutating operation.
 *
 * @module
 * @task T12535
 */
import type { CleoError } from '../errors.js';
/** The operation asking to write, as the dispatch pipeline names it. */
export interface StoreWriteRequest {
    readonly domain: string;
    readonly operation: string;
}
/**
 * The `E_TWIN_COLLAPSE_FAILED` error that blocks this write to the project's
 * store, or `null` when it may proceed.
 *
 * Binds the tasks domain first (which runs the collapse), so the answer is
 * current. A project without a store, or one whose bind fails for another
 * reason, is not blocked here: the operation then fails, or not, on its own.
 *
 * @param projectRoot - Project directory.
 * @param request - The operation; omitted, any failed pair blocks.
 * @returns The blocking error, or `null`.
 * @task T12535
 */
export declare function storeWriteBlock(projectRoot: string, request?: StoreWriteRequest): Promise<CleoError | null>;
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