import { type SimpleGit } from 'simple-git';
import type { SyncBackend } from './SyncBackend.js';
export declare class GitBackend implements SyncBackend {
    private git;
    private repoPath;
    private branch;
    private logger;
    init(repoPath: string, remoteUrl?: string): Promise<void>;
    /**
     * Ensure .sops.yaml exists in the repo with this machine's age public key.
     * Reads the key from ~/.config/sops/age/keys.txt (created during setup).
     * No-op if age key doesn't exist (encryption not set up).
     */
    private ensureSopsConfig;
    private ensureGitignore;
    pull(): Promise<void>;
    /**
     * TOFU (Trust-On-First-Use) multi-machine key sync.
     * After pull: if .sops.yaml has new keys, auto-run `sops updatekeys`.
     * Before push: ensure this machine's key is in .sops.yaml.
     */
    syncSopsKeys(): Promise<void>;
    commit(message: string): Promise<void>;
    push(): Promise<void>;
    fetch(): Promise<void>;
    rebaseAbort(): Promise<void>;
    hasChanges(): Promise<boolean>;
    readFileAtRef(ref: string, filePath: string): Promise<string>;
    resetToRef(ref: string): Promise<void>;
    getGit(): SimpleGit;
    getRepoPath(): string;
    getBranch(): string;
}