import Foundation public enum LongCatAPIError: LocalizedError, Sendable, Equatable {    case missingCookies    case invalidSession    case invalidRequest(String)    case networkError(String)    case apiError(String)    case parseFailed(String)     public var errorDescription: String? {        switch self {        case .missingCookies:            "LongCat session cookies are missing. Sign in at longcat.chat, or paste a cookie header."        case .invalidSession:            "LongCat session is invalid or expired. Please sign in again at longcat.chat."        case let .invalidRequest(message):            "Invalid request: \(message)"        case let .networkError(message):            "LongCat network error: \(message)"        case let .apiError(message):            "LongCat API error: \(message)"        case let .parseFailed(message):            "Failed to parse LongCat usage data: \(message)"        }    }}