/**
 * Validation utilities
 */
/**
 * Validate issue number
 */
export declare function isValidIssueNumber(value: unknown): value is number;
/**
 * Validate GitHub username
 */
export declare function isValidGitHubUsername(username: string): boolean;
/**
 * Validate URL
 */
export declare function isValidUrl(url: string): boolean;
/**
 * Validate file path (basic check)
 */
export declare function isValidPath(path: string): boolean;
/**
 * Parse issue number from various formats
 */
export declare function parseIssueNumber(value: string | number): number | null;
/**
 * Validate email address
 */
export declare function isValidEmail(email: string): boolean;
/**
 * Sanitize an issue/tracking name into the git branch name used for its run.
 * MUST stay byte-identical to `sanitizePlanName` in hula-server's
 * `packages/shared/src/utils.ts` — the server derives the sandbox branch from
 * the same issueName, so both sides have to resolve the SAME branch name for
 * the plan-branch flow to hand off correctly.
 */
export declare function sanitizePlanName(name: string): string;
/**
 * Sanitize filename
 */
export declare function sanitizeFilename(filename: string): string;
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