/**
 * Validate workflow name format
 * Must contain only letters, numbers, hyphens, and underscores
 */
export declare function isValidWorkflowName(name: string): boolean;
/**
 * Validate workflow name and throw descriptive error if invalid
 */
export declare function validateWorkflowName(name: string): void;
/**
 * Validate that a directory path is safe to create
 */
export declare function validateOutputDirectory(outputDir: string): void;
export declare class InvalidPortError extends Error {
    constructor(envVarName: string, raw: string, reason: string);
}
/**
 * Parse a port number from an env var. Empty string and undefined fall back to
 * the default silently (matching Compose's `${VAR:-default}` semantics).
 * Throws InvalidPortError on anything else: non-numeric, signed, decimal,
 * trailing junk (e.g. "3001abc"), or out of range 1-65535. Throwing (vs
 * warn-and-fallback) prevents CLI/Docker disagreement: Compose reads the same
 * env var via `${VAR:-default}` and uses its own parser, so a CLI fallback
 * would silently desync from the bound port.
 */
export declare function parsePort(raw: string | undefined, defaultPort: number, envVarName: string): number;