Function validate_file_path 

pub fn validate_file_path(path: &str, _name: &str) -> ValidationResult<()>

Validates a file path exists and is readable.

Security

• Checks for path traversal attempts
• Verifies file exists and is readable
• Returns specific errors for debugging without exposing full paths in production

Arguments

• path - File path to validate
• _name - Description for error messages (e.g., “certificate”, “private key”) - unused but kept for API consistency