export interface SyncConfig {
    repoUrl: string;
    localPath: string;
    deviceId: string;
}
export declare class GitSync {
    private git;
    private config;
    constructor(config: SyncConfig);
    /**
     * Clone the repo if it doesn't exist locally, or pull latest.
     */
    init(): Promise<void>;
    /**
     * Pull latest changes, rebase local commits on top.
     */
    pull(): Promise<void>;
    /**
     * Stage all changes, commit, and push.
     */
    push(message: string): Promise<void>;
    /**
     * Write an encrypted file to the repo working directory.
     */
    writeFile(relativePath: string, data: Buffer): Promise<void>;
    /**
     * Read a file from the repo working directory.
     */
    readFile(relativePath: string): Promise<Buffer | null>;
    /**
     * Check if a file exists in the repo.
     */
    exists(relativePath: string): boolean;
    /**
     * Get the local repo path.
     */
    get repoPath(): string;
}
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