I got frustrated by not seeing clearly in tmux whether Vim or Claude was the focused pane. I'd type in the wrong one, or switch panes twice to make sure.
Had Claude fix it from within tmux, reloading the config for me and everything β live preview!
Vim uses an autocommand to detect focus lost/gained to change its bg. So much clearer than before.
https://github.com/henrik/dotfiles/commit/3eba0910b66db431ba25e58622ae8c602fbbb728



