dsh-wsl-suite: Connect a WSL workspace for DeepSeek Harness

When running DeepSeek Harness on Windows and the workspace resides on the Linux side, the conventional approach is 9P sharing or spawning a `wsl.exe` process for every command. `dsh-wsl-suite` (maintained by stallenlu, MIT, 0.1.4) adopts a different foundation: a resident agent process inside the distribution, with the host querying it on demand via JSON-lines pipes. Benchmarks in the README show `stat` dropping from 4.3ms to 0.20ms, and `glob` on a 5.2GB repository dropping from 44s (missing approximately half of the directory tree) to 0.59s. The plugin provides a sidebar "W" entry to add WSL workspaces, a terminal that follows the session into the distribution (`wsl.exe -d <distro> --cd <linux> -- <shell>`), "wsl-<mode>" twin variants for each health preset (e.g., `grep`/`glob` using the built-in `ripgrep`), and removes the polling timer from 9P solutions and replaces the `/mnt` drive letter routing. The article covers the architecture, the responsibilities of various source modules, installation commands, typical usage, and precautions.