dsh-handy: Adding Session Notebook and Key Information Panel to DSH Web Client

dsh-handy is a client-side enhancement plugin for DeepSeek Harness Web maintained by dayutech. It features session-isolated notebooks, draggable key information floating bars, specified turn forking and fork inheritance, workspace session groups, session highlighting, pinning of running workspaces, and the batch closing of arbitrary tabs in the right sidebar. Notebooks, bookmarks, session groups, and key information are stored in the local storage key `dsh.handy.v1`. Key information is only entered into the current session context when re-injected upon clicking. This article provides a functional overview, npm and GitHub installation commands, the dependency configuration method for dsh.handy, a reproducible operation flow, and usage notes regarding plain text credentials.