e837847e20
- SubscriptionInfo 补 plan_id/plan_name/billing_cycle/current_period_*/amount/auto_renew 等旧字段 - BillingRecord 补 plan_id/plan_name/billing_cycle/amount/status/paid_at/period_* 等旧字段 - ChangePlanRequest target_plan_id/billing_cycle 改必填(对齐 fixture 校验期望) - ToggleAutoRenewRequest.enabled 改必填(对齐 422 校验测试) - ChangePlanResponse 加 new_subscription 字段返回新版 SubscriptionInfo