/**
 * Check if the working directory is inside a git repository.
 */
export declare function isGitRepo(cwd: string): boolean;
/**
 * Check if there are uncommitted changes in the working tree.
 */
export declare function hasChanges(cwd: string): boolean;
/**
 * Stage all changes and create a conventional commit.
 * Returns the commit hash on success, or null if nothing to commit.
 */
export declare function autoCommit(cwd: string, productName: string, changeCount: number): string | null;
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