/**
 * GranularityDecider — pure function used by MultiPassOrchestrator to
 * decide whether a WorkUnit should be subdivided further.
 *
 * No LLM dependency. Output is one of three branches:
 *   - { subdivide: true }          — clearly over threshold, split now
 *   - { subdivide: 'tie-break' }   — within 20% of threshold, defer to LLMArbitrator
 *   - { subdivide: false }         — under threshold, stop subdividing
 *
 * The "tie-break" branch exists because large files (>80% of threshold)
 * sometimes read like one cohesive unit; the orchestrator calls
 * LLMArbitrator (which has project context) for that call.
 */
import type { WorkUnit } from './slice-decompose-types.js';
export interface GranularityThresholds {
    readonly maxFiles: number;
    readonly maxLoc: number;
}
export type DeciderResult = {
    readonly subdivide: true;
    readonly reason: string;
} | {
    readonly subdivide: false;
    readonly reason: string;
} | {
    readonly subdivide: 'tie-break';
    readonly reason: string;
};
export declare const DEFAULT_THRESHOLDS: GranularityThresholds;
/**
 * Decide whether `wu` should be subdivided.
 *
 * Boundary semantics: `>` (strict). At the exact threshold (loc === maxLoc,
 * files.length === maxFiles) the result is `subdivide: false`. This matches
 * the spec: "threshold is exclusive; we only subdivide what is OVER it."
 */
export declare function shouldSubdivide(wu: WorkUnit, thresholds?: GranularityThresholds): DeciderResult;