import type { WorkflowNode, WorkflowExecutionContext, NodeExecutionResult, WorkflowEvent } from './types.js';
/**
 * 执行单个节点
 */
export declare function executeNode(node: WorkflowNode, ctx: WorkflowExecutionContext, emit: (event: WorkflowEvent) => void): AsyncGenerator<WorkflowEvent, NodeExecutionResult>;
/**
 * P2: 从工具执行结果中提取产物信息
 * 工具结果中可能包含产物 URL（如 /api/artifact/xxx）或 JSON 格式的产物信息
 */
export declare function extractArtifacts(toolName: string, result: string): Array<{
    name: string;
    type: string;
    url: string;
    size?: number;
    tool?: string;
}>;
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