Add a persistent session progress bar to the DeepSeek Harness web interface using dsh-ui-progress

### 翻译版本1（专业技术文档译法，符合海外开源项目表述习惯）： > dsh-ui-progress is a DSH Web UI plugin maintained by lhh010. It adds a persistent session progress bar to the input box dock area, featuring real proportional todos display, real-time token throughput rate, orange-red interrupted state, and amber todo reminder. It runs purely on the client side without modifying the agent-loop. This article verifies the installation commands, the corresponding relationship between the v0.9.1 snapshot and its documentation, as well as the capability boundaries by cross-checking with the directory page, GitHub README and INSTALL.md. ### 翻译版本2（更贴合国内开源项目对外文档的自然译法）： > dsh-ui-progress is a DSH Web UI plugin maintained by developer lhh010. It provides a persistent session progress bar in the input box dock zone, with functions including displaying the real proportion of todos, real-time token generation rate, showing orange-red status when interrupted and amber reminder for pending tasks. It is a pure client-side plugin and will not make any changes to the agent-loop. This article checks and confirms the installation commands, the matching relationship between the v0.9.1 snapshot and relevant documents, as well as the capability limits by referring to the directory page, GitHub README and INSTALL.md.