import type { RuntimeTask } from '../store/index.js';
import type { DaemonVerbCaller } from './daemon-verbs.js';
/** Where a task record came from, which decides what may be done to it. */
export type TaskOrigin = 'local' | 'daemon';
export interface UnionTask {
    readonly task: RuntimeTask;
    readonly origin: TaskOrigin;
}
export interface TasksUnionResult {
    readonly tasks: readonly UnionTask[];
    /**
     * Why the daemon's half is missing, when it is. `null` means the union is
     * complete, either the daemon answered, or none is configured and the local
     * set genuinely IS every task.
     */
    readonly daemonUnavailable: string | null;
}
/** The narrow local source: whatever already answers this surface's own tasks. */
export interface LocalTaskSource {
    list(limit: number): readonly RuntimeTask[];
    get(taskId: string): RuntimeTask | null;
}
export interface TasksClient {
    /** Local rows union the daemon's, deduped by id with local winning. */
    list(limit?: number): Promise<TasksUnionResult>;
    /** One task, local first, then the daemon. Null when neither has it. */
    get(taskId: string): Promise<UnionTask | null>;
    /** Cancel a daemon-owned task over `tasks.cancel`. */
    cancel(taskId: string): Promise<void>;
    /** Re-queue a daemon-owned task over `tasks.retry`. */
    retry(taskId: string): Promise<void>;
}
export declare function createTasksClient(deps: {
    readonly local: LocalTaskSource;
    readonly verbs: DaemonVerbCaller;
}): TasksClient;
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