/**
 * Types for the task management module.
 */
import type { ChildProcess } from 'child_process';
import type { RingBuffer } from '../utils/ring-buffer.js';
/**
 * Task states. Terminal states: completed, failed, cancelled, timed_out.
 * Pre-spawn failures/timeouts may transition directly from 'created' to terminal.
 */
export type TaskState = 'created' | 'running' | 'completed' | 'failed' | 'cancelled' | 'timed_out';
/**
 * Terminal states — no further transitions allowed.
 */
export declare const TERMINAL_STATES: ReadonlySet<TaskState>;
/**
 * A task record in the store.
 */
export interface TaskRecord {
    id: string;
    state: TaskState;
    prompt: string;
    role?: string;
    specialization?: string;
    model: string;
    cwd: string;
    startTime: string;
    endTime?: string;
    outputFilePath?: string;
    /** Ring buffer for output lines (bounded, no garbage) */
    output: RingBuffer<string>;
    /** Total number of output lines received (including evicted) */
    outputLines: number;
    error?: string;
    metadata?: Record<string, unknown>;
    pid?: number;
    /** Process reference (not serialized) */
    process?: ChildProcess;
    /** Timeout timer handle (cleared on terminal transition) */
    timeoutTimer?: ReturnType<typeof setTimeout>;
}
/**
 * Options for creating a new task.
 */
export interface CreateTaskOptions {
    prompt: string;
    role?: string;
    specialization?: string;
    model: string;
    cwd: string;
}
/**
 * Lightweight task summary for external APIs.
 * Mirrors the shape expected by existing MCP resource endpoints.
 */
export interface TaskSummary {
    id: string;
    status: string;
    prompt: string;
    role?: string;
    specialization?: string;
    model: string;
    cwd: string;
    startTime: string;
    endTime?: string;
    outputFilePath?: string;
    outputLines: number;
    output: string[];
    error?: string;
    metadata?: Record<string, unknown>;
    pid?: number;
}
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