chore: strip monorepo; keep Docker runtime deploy for official dsh@latest

Image installs @deepseek-ai/dsh from npm on start. Fork 0.1.2-alpha.2 source
is obsolete for this deployment path.

README.md

@@ -0,0 +1,29 @@
+# DeepSeek Harness Docker Deploy
+
+Runtime image for [DeepSeek Harness](https://github.com/deepseek-ai/deepseek-harness) (`dsh`) Web UI.
+
+The image ships a toolchain only. On every container start, `docker/entrypoint.sh` installs official `@deepseek-ai/dsh@latest` from npm, then starts `dsh web` behind a local port forward (`0.0.0.0:3080` → `127.0.0.1:3081`).
+
+## Quick start
+
+```bash
+docker compose build
+docker compose up -d
+docker logs -f dsh
+# Open the printed URL with ?token= once (30-day cookie). Use host port 3080.
+```
+
+Full guide: [DEPLOY.md](DEPLOY.md)
+
+## Layout
+
+| Path | Role |
+|------|------|
+| `Dockerfile` | Toolchain image (Node 24 / Python 3.11 / gcc / pnpm / rustup bootstrap) |
+| `docker-compose.yml` | Ports, `dsh-data` volume, workspace mount |
+| `docker/entrypoint.sh` | Install `@deepseek-ai/dsh@latest` and start web |
+| `docker/ensure-rust.sh` | On-demand Rust toolchain installer |
+
+## License
+
+MIT — see [LICENSE](LICENSE). Upstream DSH is MIT; this repo is a deployment wrapper.