Drop-in scripts and Claude Code hooks that let you run many git worktrees of the same Phoenix app in parallel — each with its own database, HTTP port, and MCP server — with zero per-worktree configuration.
When you (or Claude Code) spin up a new worktree, everything isolates
automatically: you can have main running mix phx.server on one port
while three feature branches run their own servers on three other ports,
all pointing at different databases, all in separate directories.
