Teaching tmux to babysit my Claude Code agents

If you are like me, you no longer run one Claude Code session — you run a small fleet. One window is building a feature in a TypeScript monorepo, another is reviewing a colleague's pull request, a third is chasing a redraw bug in a Neovim plugin. tmux makes this easy: a window per agent, Alt + 1 – 9 to jump between them. Often they are not even different projects — just git worktrees of the same…