DeepSeek Harness (DSH) Plugin: dsh-drop-any-file

`dsh-drop-any-file` is a DSH web plugin developed by Zenjibad, designed to solve the issue that the default interface only supports drag-and-drop image uploads. It intercepts drag events and supports uploading arbitrary file types such as PDF, zip, and txt. Files are saved to the session workspace for the Agent to read, and the plugin includes a 60MB file size limit, theme adaptation, and interactive feedback. Installation is performed via the command line, and a hard browser refresh is required after it becomes active.