import Foundation extension MiniMaxUsageSnapshot {    func withPlanNameIfAvailable(_ planName: String?) -> MiniMaxUsageSnapshot {        let cleaned = planName?.trimmingCharacters(in: .whitespacesAndNewlines)        guard let cleaned, !cleaned.isEmpty else { return self }        return MiniMaxUsageSnapshot(            planName: cleaned,            availablePrompts: self.availablePrompts,            currentPrompts: self.currentPrompts,            remainingPrompts: self.remainingPrompts,            windowMinutes: self.windowMinutes,            usedPercent: self.usedPercent,            resetsAt: self.resetsAt,            updatedAt: self.updatedAt,            services: self.services,            billingSummary: self.billingSummary,            pointsBalance: self.pointsBalance,            subscriptionExpiresAt: self.subscriptionExpiresAt,            subscriptionRenewsAt: self.subscriptionRenewsAt)    }     func withSubscriptionMetadata(_ metadata: MiniMaxSubscriptionMetadata) -> MiniMaxUsageSnapshot {        MiniMaxUsageSnapshot(            planName: metadata.planName?.trimmingCharacters(in: .whitespacesAndNewlines).nonEmpty ?? self.planName,            availablePrompts: self.availablePrompts,            currentPrompts: self.currentPrompts,            remainingPrompts: self.remainingPrompts,            windowMinutes: self.windowMinutes,            usedPercent: self.usedPercent,            resetsAt: self.resetsAt,            updatedAt: self.updatedAt,            services: self.services,            billingSummary: self.billingSummary,            pointsBalance: self.pointsBalance,            subscriptionExpiresAt: metadata.subscriptionExpiresAt ?? self.subscriptionExpiresAt,            subscriptionRenewsAt: metadata.subscriptionRenewsAt ?? self.subscriptionRenewsAt)    }} extension String {    fileprivate var nonEmpty: String? {        self.isEmpty ? nil : self    }}