/** Isolated, content-addressed workspace snapshots used for validation. */
export interface SnapshotOptions {
    includeNodeModules?: boolean;
    maxFiles?: number;
    maxBytes?: number;
    excludeNames?: string[];
}
export interface SnapshotFile {
    path: string;
    sha256: string;
    size: number;
    mode: number;
}
export interface WorkspaceSnapshot {
    sourceRoot: string;
    root: string;
    files: SnapshotFile[];
    excluded: string[];
    snapshotHash: string;
    totalBytes: number;
}
export declare class SnapshotError extends Error {
    readonly code: string;
    constructor(code: string, message: string);
}
/**
 * Create a private copy without VCS metadata or credential-bearing files.
 * Symlinks and special files are rejected instead of copied or dereferenced.
 */
export declare function createWorkspaceSnapshot(rootInput: string, options?: SnapshotOptions): Promise<WorkspaceSnapshot>;
export declare function cloneWorkspaceSnapshot(source: WorkspaceSnapshot, options?: SnapshotOptions): Promise<WorkspaceSnapshot>;
export declare function disposeWorkspaceSnapshot(snapshot: WorkspaceSnapshot): Promise<void>;
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