import type { ChatMessage, ChatScope, ChatThread } from "./types/chat.js";
export declare class LocalChatStorageFiles {
    private readonly workspaceRoot;
    constructor(workspaceRoot: string);
    ensureScope(scope: ChatScope): Promise<void>;
    readManifest(scope: ChatScope): Promise<void>;
    projectThreads(scope: ChatScope): Promise<ChatThread[]>;
    projectMessages(scope: ChatScope): Promise<ChatMessage[]>;
    findMessage(scope: ChatScope, messageId: string): Promise<ChatMessage>;
    appendThread(scope: ChatScope, thread: ChatThread): Promise<void>;
    appendMessage(scope: ChatScope, message: ChatMessage): Promise<void>;
    private readThreads;
    private readMessages;
    private appendJsonl;
    private writeManifestIfMissing;
    private scopePath;
}