Three new commands for managing isolated GSD workspaces:
- /gsd:new-workspace — create workspace with repo worktrees/clones
- /gsd:list-workspaces — scan ~/gsd-workspaces/ for active workspaces
- /gsd:remove-workspace — clean up workspace and git worktrees
Supports both multi-repo orchestration (subset of repos from a parent
directory) and feature branch isolation (worktree of current repo with
independent .planning/).
Includes init functions, command routing, workflows, 24 tests, and
user documentation.
Closes#1241
Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>