Worked on the doocs/md repository to deliver a feature enabling automatic Markdown file import via a URL parameter, focusing on improving the user workflow for document loading. Utilized JavaScript and Vue.js to implement robust CORS detection logic, ensuring that users receive clear feedback when cross-origin restrictions prevent file access. Enhanced the import process by supporting an 'open' parameter in the URL, streamlining how users bring external Markdown content into the application. The update also improved error visibility by providing more informative CORS-related messages, reducing troubleshooting time and making the front end more reliable for users working with remote Markdown files.