/**
 * FORGE Error Classes
 */
export declare class ForgeError extends Error {
    readonly code: string;
    constructor(message: string, code: string);
}
export declare class ConfigError extends ForgeError {
    constructor(message: string);
}
export declare class StateError extends ForgeError {
    constructor(message: string);
}
export declare class ValidationError extends ForgeError {
    readonly validationErrors: string[];
    constructor(message: string, validationErrors: string[]);
}
export declare class ProjectNotFoundError extends ForgeError {
    constructor(projectRoot: string);
}
/**
 * Format error for user-friendly display
 */
export declare function formatError(error: Error): string;
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