Type signatures for TreeHaver::PathValidator

module TreeHaver
# Security utilities for validating paths before loading shared libraries
module PathValidator
ALLOWED_EXTENSIONS: Array[String]
DEFAULT_TRUSTED_DIRECTORIES: Array[String]
TRUSTED_DIRS_ENV_VAR: String
MAX_PATH_LENGTH: Integer
VALID_FILENAME_PATTERN: Regexp
VALID_LANGUAGE_PATTERN: Regexp
VALID_SYMBOL_PATTERN: Regexp

# Trusted directory management
def self.trusted_directories: () -> Array[String]
def self.add_trusted_directory: (String directory) -> void
def self.remove_trusted_directory: (String directory) -> void
def self.clear_custom_trusted_directories!: () -> void
def self.custom_trusted_directories: () -> Array[String]

# Validation methods
def self.safe_library_path?: (String? path, ?require_trusted_dir: bool) -> bool
def self.in_trusted_directory?: (String? path) -> bool
def self.safe_language_name?: (String | Symbol | nil name) -> bool
def self.safe_symbol_name?: (String? symbol) -> bool
def self.safe_backend_name?: (String | Symbol | nil backend) -> bool
def self.sanitize_language_name: (String | Symbol | nil name) -> Symbol?
def self.validation_errors: (String? path) -> Array[String]
def self.windows_absolute_path?: (String path) -> bool
def self.has_valid_extension?: (String path) -> bool   end end