Virtual Workspace Manager

Use this skill whenever the user or agent needs to manage one or more virtual workspaces with vwsd/vws. vwsd prepares real, git-backed workspace directories: remote git sources become real `git worktree` directories created directly under the workspace mountpoint, and local directory sources are used in place (auto `git init` if needed). There is no NFS/FUSE mount, no symlink, no copy-on-write overlay. Trigger on keywords: vwsd, vws, virtual workspace, workspace mount, workspace unmount, workspace config, multi-workspace, parallel workspaces, workspace management, mounting git repos, workspace init, workspace doctor, workspace list, git worktree workspace.