Plugins

Adds an "Open folder" item to the session-row ⋯ menu in the DSH workspace sidebar, opening the session's workspace folder with the host OS file manager.

Fixes the Windows workspace-open action: the shipped opener spawns explorer.exe with windowsHide, so the File Explorer window is created invisible and the click reports success without appearing.

Fixes the Windows workspace-open action. The shipped opener runs `explorer.exe "<file:// URI>"`, which on some hosts reports success without raising a window — the exit-code verdict cannot tell an opened window from nothing happening. This routes that one action to `explorer.exe /e,<dir>`, which raises a window reliably, and leaves every other application in the menu on the shipped path.