dsh-silent-pwsh

When running sandboxed pwsh or bash commands through the DeepSeek Harness desktop app on Windows, each call briefly flashes a black console window on the desktop—frequent enough to be genuinely annoying. The root cause is that the runner never sets SW_HIDE on the confined child process, while CREATE_NO_WINDOW simply crashes the child with 0xC0000142 under the restricted token. dsh-silent-pwsh exists to solve exactly this: it changes no configuration and alters no behavior—it just hides the window so commands run to completion with correct exit codes.

The plugin uses a self-healing patch strategy: on every host boot it idempotently checks and rewrites three critical files: it adds STARTF_USESHOWWINDOW and wShowWindow: 0 to the encodeStartupInfo calls in sandbox-windows-acl, and adds windowsHide: true to the taskkill and sandbox capability-probe spawnSync calls. Files are only rewritten when they match the expected pre-patch shape; after an upgrade or reinstall the patch is automatically re-applied on the next boot with no manual intervention required.

If you are on the Windows version of DeepSeek Harness desktop and the repeatedly flashing black console windows keep breaking your workflow, install this plugin and restart. From then on, every sandboxed command runs silently in the background.