/**
 * #2661 — Cross-worktree AI job dedup (issue invariant 5).
 *
 * N worktrees of one repository checked out at the same HEAD schedule the
 * same analyses independently: N audits of identical content, N optimize
 * passes, N testgap sweeps. Before a model launch, callers compute
 *
 *   jobKey = sha256(repositoryId, head, workerType, workerConfigHash)
 *
 * and skip the launch when the same job succeeded within the freshness
 * window. HEAD moves → new key → the job runs again.
 *
 * The registry lives next to the AI budget ledger under the user's home
 * directory (owner-only, symlink-rejecting) so all daemons share it:
 *
 *   ~/.claude-flow/ai-jobs.json
 *
 * This is a best-effort OPTIMIZATION layered under the budget: two daemons
 * racing the same key may both miss and both attempt a launch, but the
 * budget's atomic reservation (maxConcurrentGlobal / hourly cap) is the hard
 * invariant that bounds actual launches. Only operational metadata is
 * persisted — never prompts, outputs, or source content.
 */
export interface AiJobKeyParts {
    repositoryId: string;
    head: string;
    workerType: string;
    /** Hash of the effective worker config (prompt/model/sandbox/patterns). */
    configHash: string;
}
export declare function computeAiJobKey(parts: AiJobKeyParts): string;
/** Stable hash of an arbitrary config object (key-sorted JSON). */
export declare function hashWorkerConfig(config: unknown): string;
export declare class AiJobDedupRegistry {
    private readonly dir;
    private readonly file;
    constructor(options?: {
        baseDir?: string;
    });
    /**
     * True when the job succeeded within `freshnessMs`. Any registry error
     * reads as "not fresh" — dedup failing open only costs a (budget-capped)
     * launch, never correctness.
     */
    isFresh(jobKey: string, freshnessMs: number): {
        fresh: boolean;
        lastRunAt?: number;
    };
    /** Record a successful run of a job. Best-effort. */
    recordSuccess(jobKey: string, meta: {
        workerType: string;
        repositoryId: string;
        workspace: string;
    }): void;
    private read;
    private write;
}
export declare function getAiJobDedupRegistry(): AiJobDedupRegistry;
/** Test hook: reset the singleton (e.g. after changing RUFLO_AI_BUDGET_DIR). */
export declare function resetAiJobDedupRegistryForTests(): void;
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