import type { FastifyInstance } from "fastify";
import type { CollectorConfig } from "./config.js";
import type { CollectorStore } from "./store.js";
/**
 * Register the audit hooks on `app`:
 *
 * - `preSerialization` captures the row count when a handler returned an array
 *   (streamed/hijacked responses simply have none);
 * - `onResponse` writes the row for authenticated, non-dashboard requests.
 *
 * `internalDispatchToken` is the per-process token the hosted MCP transport
 * marks its own in-process reads with; when supplied, those rows are tagged
 * `mcp-http`. It is `undefined` unless `COLLECTOR_MCP_HTTP` is on.
 */
export declare function registerAuditHooks(app: FastifyInstance, store: CollectorStore, config: CollectorConfig, internalDispatchToken?: string): void;
/**
 * Start the retention sweep: delete audit rows older than
 * `config.auditRetentionDays` now, then every {@link PRUNE_INTERVAL_MS}. The
 * delete is idempotent, so a restart loop or several collector instances
 * sharing one database cost nothing. Returns a stop function; the timer is
 * `unref`'d so it never keeps the process alive.
 *
 * `auditRetentionDays === 0` disables the sweep (keep rows indefinitely).
 */
export declare function startAuditRetention(app: FastifyInstance, store: CollectorStore, config: CollectorConfig): () => void;
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