I use claude-code. claude-code now spins up many agents on its own, sometimes switch models to save costs, and can easily use 200+ tools concurrently, and use multiple skills at the same time when needed, its automation gets smarter and more parallel by the day, do we still need to outwit what's probably already done by claude-code? I still use tmux but no longer for multiple agents, but for me to poke around at will, I let the plan/code/review/whatever fully managed and parallelized by claude-code itself, it's massively impressive.