9d63635502
Adds SberPay alongside existing SBP (44) and Card (36) sub-methods. Changes across all 8 required files: - config.py: KASSA_AI_SBERPAY_ENABLED, display name, helper methods - kassa_ai_service.py: payment_system_id=43 in KASSA_AI_SUB_METHODS - kassa_ai.py handler: method config + start_kassa_ai_sberpay_topup - main.py: route tuple, import, handler registration - payment_service.py: guest purchase flow method check - cabinet/balance.py: KASSA_AI_OPTION_MAP sberpay=43 - payment_method_config_service.py: sub_option for admin panel - inline.py: keyboard button + fallback condition guard Env vars: KASSA_AI_SBERPAY_ENABLED, KASSA_AI_SBERPAY_DISPLAY_NAME