witherwithwinter/codinput: A Code Editor-Style DSH Creator

`codinput` is a DeepSeek Harness plugin designed to deliver a code-editor-style input experience. It offers line numbers, a split Markdown preview, and six dockable layouts with window resizing support. The final output is standard plain-text Markdown. It is suitable for users who need precise formatting or frequently edit Markdown, but verify the license details before installation.