Setup Script Should Support Git Worktrees

A setup script should support Git worktrees by isolating runtime resources (ports, databases, cache keys) per worktree while sharing expensive services like database servers across the machine. As parallel coding agents increasingly work on multiple branches simultaneously, the setup script must allocate unique identifiers and configurations to each worktree to prevent conflicts and state collision. The solution involves using a local registry with locking to coordinate resource allocation when multiple worktrees initialize concurrently.