/**
 * [WHO]: Provides simplifyWithLLM(), buildUserPrompt(), SIMPLIFY_SYSTEM_PROMPT
 * [FROM]: Depends on ExtensionContext, simplify parser, and simplify type constants
 * [TO]: Consumed by extensions/optional/simplify/index.ts during file analysis
 * [HERE]: extensions/optional/simplify/simplify-analyzer.ts - LLM integration for simplify extension
 */
import type { ExtensionContext } from "../../../core/extensions-host/types.js";
import { type SimplifyOutput } from "./simplify-types.js";
/**
 * Build the user prompt for simplification
 */
export declare function buildUserPrompt(code: string, rules: string, diff?: string): string;
/**
 * Simplify code using LLM via ctx.completeSimple()
 *
 * This replaces the previous manual model resolution with the simpler
 * ctx.completeSimple() pattern used by the interview extension.
 *
 * @param code - Original code to simplify
 * @param rules - Project rules (from CLAUDE.md, etc.)
 * @param diff - Git diff for the file (optional)
 * @param ctx - Extension context with completeSimple method
 * @returns SimplifyOutput with simplified code or null
 */
export declare function simplifyWithLLM(code: string, rules: string, diff: string | undefined, ctx: ExtensionContext): Promise<SimplifyOutput>;