Worked on the Misskey frontend to enhance the stability and usability of media embedding, with a focus on improving the playback experience for rich media content. Addressed a specific issue affecting Twitch Clips by updating the URL preview utility in the misskey-dev/misskey repository, enabling the system to recognize both clips.twitch.tv and player.twitch.tv domains. This fix ensured that embedded Twitch clips display and play correctly within the application. The work involved frontend development using JavaScript and TypeScript, emphasizing targeted bug resolution and incremental improvement of user-facing features rather than broad feature development during the period covered by this profile.