/**
 * Persist outbound TTS audio under `<agentHome>/tts/<session>/`.
 */
import type { InternalAttachmentRoots } from './inbound-persist.js';
export declare const TTS_REL_ROOT = "tts";
export declare function persistOutboundTtsAudio(agentHomeRoot: string, sessionKey: string, audioBuffer: Buffer, format: string): Promise<{
    workspaceRelativePath: string;
    name: string;
    size: number;
}>;
/**
 * Resolve a stored relative path under `tts/`.
 */
export declare function resolveSafeTtsFilePath(roots: InternalAttachmentRoots, relRaw: string): string | null;
