在 DSH prompt 输入框按上/下方向键切换最近发送过的消息（终端式历史导航），跨会话 localStorage 持久化。 | Terminal-style prompt history navigation for the DSH composer: ArrowUp/ArrowDown cycles through recently sent prompts, persisted across sessions.
dsh plugin --profile web add @huanlin/dsh-plugin-input-history