feature: Ghostty and Emacs polish in dotfiles
I shipped v2026.05.2 of dotfiles as a follow-up polish pass on yesterday's tmux and Emacs reset.
This release adds a basic macOS Ghostty config, restores a bunch of the small Spacemacs habits I still wanted like fuzzy M-x, Helm buffer switching, avy motion, kj insert escape, project ripgrep search, restart and pasteboard bindings, plus YAML mode for config editing.
I also tightened the repo's own agent and release docs with AGENTS.md, CLAUDE.md, and a clearer note that these tags are chronological snapshots rather than semver, which makes the setup feel more intentional and easier to keep evolving.
