hairyf/deepseek-harness-desktop ? reverse-engineered prompt

Build me a desktop app for DeepSeek Harness that feels like a simple installer and launcher, not a developer tool. I want to be able to download it on Windows, macOS, or Linux, open it, and have it handle everything on its own, including setting up the needed runtime the first time and then running fully locally on my machine.

It should show a clean setup flow, let me choose recommended plugins during first launch, and then launch the harness in an embedded web view with a sidebar for controls. I also want profile management so I can keep separate workspaces isolated from each other, plus a place to view installed plugins and update or remove them if something breaks.

Make it small, fast, and privacy friendly, with no telemetry by default. It should also update itself and keep the harness core in sync automatically when possible. If you need current docs or upstream details, look them up online.