/**
 * ClaudeBase v1 Validation Layer
 * Enforces all v1 contracts with hard failures
 */
/**
 * Validate path for Windows compatibility
 * Rejects reserved names, ADS, invalid characters, and excessive length
 */
export declare function validateWindowsPath(path: string): void;
/**
 * Detect case-insensitive collision in file list
 * Returns conflicting paths if found
 */
export declare function detectCaseCollisions(paths: string[]): string[] | null;
/**
 * Validate catalog schema version
 * Hard fails on unsupported versions
 */
export declare function validateSchemaVersion(version: unknown): asserts version is number;
/**
 * Validate cache schema compatibility
 */
export declare function validateCacheCompatibility(cacheVersion: unknown): void;
/**
 * Get user-only permissions mask
 * Returns 0o600 for files, 0o700 for directories
 */
export declare function getUserOnlyPermissions(isDirectory: boolean): number;
/**
 * Check if a tar entry type indicates a symlink
 * Type '2' (50 in ASCII) is symlink in tar format
 */
export declare function isSymlinkType(typeFlag: number): boolean;
/**
 * Check if a tar entry type indicates a link (hard or soft)
 * Types '1' (49) and '2' (50) are links
 */
export declare function isLinkType(typeFlag: number): boolean;
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