Implemented `PayByCardScript` to enable automated card payments on the Ozon platform. Includes ad banner detection/handling, OCR-based transaction ID extraction, fee calculation, and database updates for transactions. Added XML asset `pay_by_card_success.xml` for payment result handling.
Implemented database migration for adding new fields (`json`, `sent_to_server`) in `events` table. Updated DAO methods to support the new fields and introduced `markSentToServer`. Enhanced Ozon transaction workflows with OCR-based extraction, event error handling improvements, and result reporting. Refactored `EventHandler` for streamlined task processing and stale event cleanup.
