export interface TraceDecision {
    point: string;
    choice: string;
    reason: string;
}
export interface TraceMetric {
    name: string;
    value: number;
    unit?: string;
}
export interface TraceError {
    code: string;
    message: string;
}
export interface TraceExportData {
    operation: string;
    timestamp: string;
    durationMs: number;
    decisions: TraceDecision[];
    metrics: TraceMetric[];
    errors: TraceError[];
    success: boolean;
}
/**
 * Lightweight execution trace used by coordination workflows.
 */
export declare class ExecutionTrace {
    private readonly operation;
    private readonly startedAt;
    private completedAt?;
    private readonly _decisions;
    private readonly _metrics;
    private readonly _errors;
    private _success;
    constructor(operation: string);
    recordDecision(point: string, choice: string, reason: string): void;
    recordMetric(name: string, value: number, unit?: string): void;
    recordError(code: string, message: string): void;
    complete(success: boolean): void;
    toJSON(): TraceExportData;
}
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