/**
 * FeatureGrouper - Groups flows into product-level features using LLM.
 * Reads persisted flows + module tree, sends to LLM for grouping, validates result.
 */
import type { Command } from '@oclif/core';
import type { Flow, Module } from '../../../db/schema.js';
import type { LlmOptions } from '../flows/types.js';
import type { FeatureSuggestion } from './types.js';
export declare class FeatureGrouper {
    private readonly command;
    private readonly isJson;
    constructor(command: Command, isJson: boolean);
    /**
     * Group flows into product-level features using LLM.
     */
    groupFlowsIntoFeatures(flows: Flow[], modules: Module[], model: string, llmOptions: LlmOptions): Promise<FeatureSuggestion[]>;
    private buildSystemPrompt;
    buildUserPrompt(flows: Flow[], modules: Module[]): string;
    private buildModuleTreeText;
    private buildRetryPrompt;
    /**
     * Parse LLM CSV response into FeatureSuggestion[].
     * Validates that every flow slug is assigned to exactly one feature.
     */
    static parseFeatureCSV(response: string, validFlowSlugs: Set<string>): {
        features: FeatureSuggestion[];
        errors: string[];
        orphanedSlugs: string[];
    };
}
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