- Add comprehensive OxaPay payment provider with invoice creation, webhook processing, and subscription status sync
- Implement conditional payload fields (to_currency, callback_url) based on configuration
- Create universal sync command for all non-recurring payment providers
- Add subscription model fields for payment tracking
- Implement proper status mapping between OxaPay and Laravel subscription states
- Add webhook signature validation using HMAC SHA512
- Add base repository interfaces and abstract classes
- Implement separated read/write repositories for Domain and Username models
- Add intelligent query caching with automatic invalidation
- Include cache management service and CLI commands
- Add comprehensive configuration for cache TTL and monitoring
- Enhance performance through optimized data access patterns
