import Foundation public struct PerplexityCreditsResponse: Codable {    public let balanceCents: Double    public let renewalDateTs: TimeInterval    public let currentPeriodPurchasedCents: Double    public let creditGrants: [PerplexityCreditGrant]    public let totalUsageCents: Double     enum CodingKeys: String, CodingKey {        case balanceCents = "balance_cents"        case renewalDateTs = "renewal_date_ts"        case currentPeriodPurchasedCents = "current_period_purchased_cents"        case creditGrants = "credit_grants"        case totalUsageCents = "total_usage_cents"    }} public struct PerplexityCreditGrant: Codable {    public let type: String    public let amountCents: Double    public let expiresAtTs: TimeInterval?     enum CodingKeys: String, CodingKey {        case type        case amountCents = "amount_cents"        case expiresAtTs = "expires_at_ts"    }}