Yury Semykin developed the App Connection Mode for Minion-to-Master communications in the moysklad/java-remap-1.2-sdk repository, focusing on backend development using Java. He extended the MinionToMasterType enum in the RetailStore module by adding an APP value, enabling application-specific connection workflows and expanding integration options for downstream applications. His approach emphasized API compatibility and code traceability, with explicit commit documentation and preparation for integration testing. Although no bugs were fixed during this period, Yury concentrated on feature delivery and maintainability, demonstrating skills in Java enum extension, API design, and collaborative development within the context of evolving integration requirements.