/**
 * Git snapshot capture and restore for conversation revert.
 * Captures HEAD, branch, and working tree state before each turn.
 */
export interface GitSnapshot {
    /** Current HEAD commit hash */
    head: string;
    /** Current branch name */
    branch: string;
    /** Stash ref for uncommitted changes (undefined if clean tree) */
    stash?: string;
}
/**
 * Check if the current directory is inside a git repository.
 */
export declare function isGitRepo(cwd?: string): Promise<boolean>;
/**
 * Capture a snapshot of the current git state: HEAD, branch, and working tree.
 * Uses `git stash create -u` to capture uncommitted changes (including untracked files)
 * without modifying the working tree.
 *
 * Never throws - returns null if not in a git repo or on failure.
 */
export declare function captureSnapshot(cwd?: string): Promise<GitSnapshot | null>;
export interface RestoreResult {
    success: boolean;
    warning?: string;
    error?: string;
}
/**
 * Restore git state from a snapshot.
 * 1. Checkout the branch
 * 2. Reset to the snapshot HEAD
 * 3. Apply stashed changes if any
 *
 * If only stash apply fails, returns success with a warning.
 */
export declare function restoreSnapshot(snapshot: GitSnapshot, cwd?: string): Promise<RestoreResult>;
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