import { type ResearchJob } from "./types.js";
/**
 * Derive a deterministic 16-char hex job id from a question slug + createdAt.
 * Mirrors factId in src/state/facts.ts:58-69 — no wall-clock dependency.
 * The CLI stamps createdAt at the handler boundary and passes it here.
 */
export declare function jobId(question: string, createdAt: string): string;
/**
 * Persist a research job as a JSON file.
 * Validates with ResearchJobSchema before writing so an invalid job never
 * reaches disk (mirrors plan-state.ts:22-38).
 */
export declare function addJob(projectRoot: string, job: ResearchJob): Promise<void>;
/**
 * List all persisted research jobs, sorted by filename.
 * Returns [] if the jobs directory does not exist yet.
 * Malformed JSON files are silently skipped (mirrors plan-state.ts:106-140).
 */
export declare function listJobs(projectRoot: string): Promise<ResearchJob[]>;
/**
 * Read a single research job by id.
 * Returns null if not found or malformed.
 */
export declare function readJob(projectRoot: string, id: string): Promise<ResearchJob | null>;
/**
 * Delete a research job by id. Returns true if deleted, false if not found.
 * Mirrors approval-state.ts:138-140.
 */
export declare function removeJob(projectRoot: string, id: string): Promise<boolean>;
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