rahul3886/deepseek-harness ? reverse-engineered prompt

Build me a local AI agent harness called DeepSeek Harness, with a simple web app I can run from my machine and open in the browser. It should feel like a flexible workspace where the core system stays small, and most things are added through plugins, since that is the main idea here.

I want a clean Web UI that starts easily, shows the agent working, and makes it straightforward to add or remove capabilities later without rewriting the whole app. Please set it up so the project can be installed and run from source, and make the default experience usable right away with a basic example workflow.

If there are docs or existing patterns in the repo, follow those. If you need current setup details, look them up online. Keep the codebase organized for future plugins, and make sure the app is easy to develop locally and preview in the browser.