Worked on security and test reliability improvements for the owncloud/web repository, focusing on dependency management and robust unit testing. Addressed known vulnerabilities by upgrading Axios to version 1.18.1, ensuring a stronger security posture. Improved the stability of the web worker test suite by refactoring tests to use hoisted module-level mocks for the WebDAV client, which eliminated flaky behavior and enhanced CI reliability. Corrected the structure of test data in paste worker tests to better reflect production payloads. Utilized TypeScript and Vitest throughout, enabling safer deployments and streamlining future maintenance for the codebase during the development period.