note: Building a Lightweight Emacs Config After Spacemacs

I shipped v2026.5.1 of dotfiles, which pairs a nicer tmux workflow with the move away from the old Spacemacs setup into a smaller hand-rolled Emacs config. The tmux side gives me a one-keystroke 70/20/10 vertical layout plus a safe top-and-middle pane swap, while PR #2 keeps the core editor ergonomics I care about like Evil, leader keys, Magit, Helm-style tracked file finding, and early theme loading without the extra framework machinery. This is the point where the repo feels easier to understand and own, and I want to do a fuller write-up on the tmux and "Subspacemacs" workflow soon.