/**
 * Slack Thread Ingestion (Phase 5)
 *
 * Provides a webhook handler that allows developers to ingest explicit
 * architectural decisions discussed in Slack directly into the EDM store.
 * Best paired with a Slack Shortcut or Slash Command (e.g., `/prsense-save`).
 */
import type { Request, Response } from 'express';
import type { StorageBackend } from '../storage/interface.js';
export declare class SlackIngester {
    private signingSecret;
    private storage;
    private embedder;
    constructor(signingSecret: string, storage: StorageBackend, embedder: import('../embeddingPipeline.js').EmbeddingPipeline);
    /**
     * Verifies the request came from Slack.
     */
    private verifySignature;
    /**
     * Express middleware/handler to process incoming Slack shortcuts or commands.
     */
    handleWebhook(req: Request, res: Response): Promise<Response<any, Record<string, any>> | undefined>;
}
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