import type { TaskGraph, StallReport } from './types.js';
export declare class StallDetector {
    /**
     * Detect stalls in a task graph.
     * Returns stall reports for any problematic tasks.
     */
    detectStalls(graph: TaskGraph, thresholdMs: number): StallReport[];
    /**
     * Detect circular dependencies in the task graph.
     * Returns task IDs involved in deadlock cycles.
     */
    private detectDeadlocks;
}