- Introduced `testPaymentMethods` endpoint in InvoicesController to directly test WHMCS payment methods for a specific client ID.
- Added `testWhmcsPaymentMethods` method in InvoicesService for detailed logging and error handling during WHMCS API calls.
- Implemented cache bypassing and enhanced logging in `getPaymentMethods` method of WhmcsPaymentService for debugging purposes.
- Updated payment method transformation logic in WhmcsDataTransformer to handle variations in WHMCS API responses.
- Added debug information in Checkout and AddressConfirmation components to assist in troubleshooting address confirmation flow.
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