/**
 * Diff Engine
 *
 * Detects changes in ticket briefs and generates change summaries.
 */
/**
 * Change type
 */
export type ChangeType = "added" | "removed" | "modified" | "moved";
/**
 * Change
 */
export interface Change {
    type: ChangeType;
    section?: string;
    oldValue?: string;
    newValue?: string;
    lineNumber?: number;
    context?: string;
}
/**
 * Change summary
 */
export interface ChangeSummary {
    changes: Change[];
    sectionsAdded: string[];
    sectionsRemoved: string[];
    sectionsModified: string[];
    totalChanges: number;
    isMachineGenerated: boolean;
}
/**
 * Detect changes between two briefs
 */
export declare function detectChanges(oldBrief: string, newBrief: string): ChangeSummary;
/**
 * Generate human-readable change summary
 */
export declare function generateChangeSummary(summary: ChangeSummary): string;
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