- Build PolarProvider from scratch with proper HTTP API integration
- Add encrypted configuration loading from payment_providers table via model
- Implement sandbox/live environment switching with proper credential handling
- Fix product creation API structure for Polar.sh requirements
- Add comprehensive error handling and logging throughout checkout flow
- Fix PaymentController checkout URL handling to support Polar's checkout_url response
- Add debug logging for troubleshooting checkout session creation
- Support both regular and trial checkout flows for Polar payments
- Add unified payment provider architecture with contract-based design
- Implement 6 payment providers: Stripe, Lemon Squeezy, Polar, Oxapay, Crypto, Activation Keys
- Create subscription management with lifecycle handling (create, cancel, pause, resume, update)
- Add coupon system with usage tracking and trial extensions
- Build Filament admin resources for payment providers, subscriptions, coupons, and trials
- Implement payment orchestration service with provider registry and configuration management
- Add comprehensive payment logging and webhook handling for all providers
- Create customer analytics dashboard with revenue, churn, and lifetime value metrics
- Add subscription migration service for provider switching
- Include extensive test coverage for all payment functionality
- Upgrade Filament framework from v3 to v4
- Update all Filament resources and pages for v4 compatibility
- Fix test suite to maintain 100% pass rate (321 tests passing)
- Add visibility condition for ticket close action (only when not closed)
- Update dependencies and build assets for new Filament version
- Maintain backward compatibility while leveraging v4 improvements
