Add complete billing system with Stripe and PayPal gateway support, checkout flow with coupon validation, subscription management (cancel/resume/swap), payment method management, invoice and transaction history, webhook handlers, dunning/suspension system with scheduled processing, and 29 new tests (53 total passing). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
8.2 KiB
8.2 KiB