Worked on wallet integration and stability improvements across ethereum/remix-project and MetaMask/metamask-sdk, focusing on front-end development with JavaScript and TypeScript. Enhanced wallet onboarding by refining error handling and user notifications, ensuring users receive clear guidance when connecting MetaMask or the Injected Provider. Addressed a critical memory management issue in MetaMaskInstaller by updating the cleanup process for window.ethereum, reducing memory leaks and improving reliability for long-running dApps. Prioritized user experience and robust error visibility, applying UI/UX principles and Web3 integration expertise to streamline wallet connection flows and maintain predictable application behavior during Ethereum object teardown and onboarding scenarios.