import type { Spec } from '../../../types/index.js';
import type { ProposalPhase } from '../../../types/proposal.js';
/**
 * Build a CSS Grid Gantt chart from specs and optional phases.
 * Returns an HTML string with the full Gantt visualization.
 */
export declare function buildGanttChart(specs: Spec[], phases?: ProposalPhase[], _startDate?: string): string;
//# sourceMappingURL=proposal-gantt-builder.d.ts.map