import type { BacklogTicket, ExecutionPlan, PlanFileEntry } from './types.js';
import type { Logger } from './logger.js';
/**
 * Extract top keywords from text for grep discovery.
 */
export declare function extractKeywords(text: string, max?: number): string[];
/**
 * Tier 1.5: Use ticket.modules for scoped file discovery.
 * Includes module files themselves (if they exist on disk) plus grep within module paths.
 */
export declare function tier15Modules(ticket: BacklogTicket, cwd: string): PlanFileEntry[] | null;
/**
 * Generate a concrete execution plan for a ticket using 4-tier file discovery.
 * No embeddings required.
 */
export declare function generatePlan(ticket: BacklogTicket, model: string, cwd: string, log: Logger): ExecutionPlan;
/**
 * Format an ExecutionPlan as a structured Aider --message prompt.
 */
export declare function formatPlanAsPrompt(plan: ExecutionPlan, ticket: BacklogTicket): string;
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