Worked on enhancing configuration parsing reliability in the kenzok8/sublink-worker repository by refactoring the BaseConfigParser component. Focused on backend development and code refactoring using JavaScript, the work standardized URL handling so that all URLs, including those decoded from Base64, are consistently parsed as arrays. This approach eliminated duplicate code in BaseConfigBuilder.js, simplifying the parsing logic and reducing the risk of edge-case errors. The changes improved maintainability and enabled more robust downstream processing. Delivered as a single feature within one month, the update addressed maintainability and reliability concerns in configuration parsing without introducing new bugs or regressions.