dsh-workbuddy-files: Replicate WorkBuddy-style file references in DSH Web

dsh-workbuddy-files is a DSH client plugin maintained by miaoxintechnology (MIT, current package version 0.2.4) that unifies drag-and-drop and paste handling in web conversations: a full-screen drop mask, a native reference bubble at the cursor, grouping of @-mentioned file caches, and file cards at the end of turns; files are saved to ~/.dsh-drops, and the Host provides read_document. This article introduces installation commands (npm, GitHub, link/file), optional dropsDir and maxFileBytes configurations, and permissions and sandbox considerations, based on the official README.