v0.42.0

Added

• enforce workspace git policies
• support scoped workspace aliases
• add opaque workspace aliases
• add GitHub PR merge cleanup commands

Changed

• extract workspace inventory cleanup
• extract workspace emergency cleanup
• extract workspace worktree lifecycle
• extract workspace repository lifecycle
• extract workspace git operations

Fixed

• warn on base branch worktrees
• load site agents alongside repo instructions
• project site agents into worktrees
• clean up merged PR worktrees before branch deletion
• skip submodule worktrees during cleanup apply