Terminal & shell

brew install --cask ghostty

# Font (install a Nerd Font via Homebrew cask; icons in prompts need it)
font-family = JetBrainsMono Nerd Font
font-size = 13
font-thicken = true
adjust-cell-height = 10%

# Theme: light/dark follows the system
theme = light:GitHub-Light-Default,dark:GitHub-Dark-Default
background-opacity = 0.97
background-blur = 20
macos-titlebar-style = tabs
macos-option-as-alt = true            # so ⌥ works as Meta in the shell (Emacs bindings, ⌥← word jumps)
cursor-style = bar
cursor-style-blink = false
mouse-hide-while-typing = true
copy-on-select = clipboard
window-save-state = always
window-inherit-working-directory = true
split-inherit-working-directory = true
scrollback-limit = 100000000
shell-integration-features = cursor,sudo,title
notify-on-command-finish = unfocused
notify-on-command-finish-after = 30s

# Keybinds (defaults are good; a few additions)
keybind = super+d=new_split:right
keybind = super+shift+d=new_split:down
keybind = super+alt+left=goto_split:left
keybind = super+alt+right=goto_split:right
keybind = super+alt+up=goto_split:up
keybind = super+alt+down=goto_split:down
keybind = super+shift+enter=toggle_split_zoom
keybind = global:super+grave=toggle_quick_terminal    # drop-down terminal from anywhere

# ~/.zshrc — no framework, ~50ms startup
# --- Homebrew (also in .zprofile for login shells; harmless twice) ---
eval "$(/opt/homebrew/bin/brew shellenv)"

# --- history: big, shared, deduplicated ---
HISTFILE="$HOME/.zsh_history"
HISTSIZE=200000
SAVEHIST=200000
setopt SHARE_HISTORY INC_APPEND_HISTORY HIST_IGNORE_ALL_DUPS HIST_IGNORE_SPACE HIST_REDUCE_BLANKS HIST_VERIFY EXTENDED_HISTORY

# --- behaviour ---
setopt AUTO_CD            # `..` and `dirname` without cd
setopt AUTO_PUSHD PUSHD_IGNORE_DUPS PUSHD_SILENT
setopt EXTENDED_GLOB GLOB_DOTS NO_CASE_GLOB
setopt INTERACTIVE_COMMENTS
setopt CORRECT            # suggest corrections for mistyped commands
unsetopt BEEP
bindkey -e                # emacs keybindings (⌃A ⌃E ⌃K ⌃R …); `bindkey -v` for vi mode
WORDCHARS='*?_-.[]~=&;!#$%^(){}<>'   # ⌥⌫ stops at / and .

# --- completion ---
autoload -Uz compinit
# cache compdump; rebuild at most once a day
if [[ -n ~/.zcompdump(#qN.mh+24) ]]; then compinit; else compinit -C; fi
zstyle ':completion:*' menu select
zstyle ':completion:*' matcher-list 'm:{a-zA-Z}={A-Za-z}' 'r:|[._-]=* r:|=*' 'l:|=* r:|=*'
zstyle ':completion:*' list-colors "${(s.:.)LS_COLORS}"
zstyle ':completion:*:descriptions' format '%F{yellow}-- %d --%f'
zstyle ':completion:*' group-name ''
zstyle ':completion:*' use-cache on
zstyle ':completion:*' cache-path "$HOME/.cache/zsh/zcompcache"
# Homebrew site-functions are on fpath via brew shellenv (gh, docker, kubectl completions land there)

# --- plugins (installed via brew; sourced directly, no plugin manager) ---
source "$(brew --prefix)/share/zsh-autosuggestions/zsh-autosuggestions.zsh"
source "$(brew --prefix)/share/zsh-history-substring-search/zsh-history-substring-search.zsh"
bindkey '^[[A' history-substring-search-up
bindkey '^[[B' history-substring-search-down
ZSH_AUTOSUGGEST_STRATEGY=(history completion)
ZSH_AUTOSUGGEST_BUFFER_MAX_SIZE=40
source "$(brew --prefix)/share/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh"   # must be last plugin

# --- tools ---
eval "$(starship init zsh)"                # prompt
eval "$(zoxide init zsh --cmd cd)"         # `cd` learns your dirs; `cdi` interactive
eval "$(fzf --zsh)"                        # ⌃R history, ⌃T files, ⌥C cd
eval "$(mise activate zsh)"                # per-project runtimes (Chapter 11)
eval "$(direnv hook zsh)"                  # per-directory env (Chapter 10)
export FZF_DEFAULT_COMMAND='fd --type f --hidden --exclude .git'
export FZF_CTRL_T_COMMAND="$FZF_DEFAULT_COMMAND"
export FZF_ALT_C_COMMAND='fd --type d --hidden --exclude .git'
export FZF_DEFAULT_OPTS='--height 40% --layout=reverse --border --info=inline'
export FZF_CTRL_T_OPTS="--preview 'bat --color=always --style=numbers --line-range=:200 {}'"

# --- environment ---
export EDITOR="nvim"         # or "code --wait" / "zed --wait"
export VISUAL="$EDITOR"
export PAGER="less -RFX"
export MANPAGER="sh -c 'col -bx | bat -l man -p'"   # coloured man pages
export BAT_THEME="ansi"
export HOMEBREW_NO_ENV_HINTS=1
export HOMEBREW_BUNDLE_FILE="$HOME/.config/homebrew/Brewfile"
export GPG_TTY=$(tty)

# --- aliases ---
alias ls='eza --group-directories-first --icons=auto'
alias ll='eza -lah --git --group-directories-first --icons=auto'
alias lt='eza --tree --level=2 --icons=auto'
alias cat='bat --paging=never'
alias du='dust'
alias df='duf'
alias top='btop'
alias vim='nvim'
alias g='git'
alias gs='git status -sb'
alias gl='git log --oneline --graph --decorate -20'
alias gd='git diff'
alias gp='git push'
alias gc='git commit'
alias gco='git switch'
alias ..='cd ..'
alias ...='cd ../..'
alias rm='trash'                     # brew install trash; `command rm` for the real thing
alias mkd='mkdir -p'
alias path='echo -e ${PATH//:/\\n}'
alias reload='exec zsh'
alias brewup='brew update && brew upgrade && brew autoremove && brew cleanup --prune=all'
alias ip='curl -s https://ifconfig.me && echo'
alias localip="ipconfig getifaddr en0"
alias flushdns='sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder'

# --- functions ---
mkcd() { mkdir -p "$1" && cd "$1"; }
# fuzzy kill
fkill() { ps -ef | sed 1d | fzf -m --header='[kill:process]' | awk '{print $2}' | xargs -r kill -${1:-9}; }
# fuzzy git branch switch
gb() { git branch --all | grep -v HEAD | fzf --preview 'git log --oneline --graph -20 {1}' | sed 's/.* //' | sed 's#remotes/origin/##' | xargs -r git switch; }
# extract anything
extract() {
  case "$1" in
    *.tar.bz2|*.tbz2) tar xjf "$1" ;;  *.tar.gz|*.tgz) tar xzf "$1" ;;  *.tar.xz) tar xJf "$1" ;;
    *.tar) tar xf "$1" ;;  *.bz2) bunzip2 "$1" ;;  *.gz) gunzip "$1" ;;  *.zip) unzip "$1" ;;
    *.7z) 7z x "$1" ;;  *.rar) unrar x "$1" ;;  *) echo "don't know how to extract '$1'" ;;
  esac
}
cheat() { curl -s "cheat.sh/$1"; }

# --- local overrides (not in dotfiles repo) ---
[[ -f ~/.zshrc.local ]] && source ~/.zshrc.local

brew install starship zoxide fzf zsh-autosuggestions zsh-syntax-highlighting zsh-history-substring-search \
             eza bat ripgrep fd dust duf btop trash tlrc

# ~/.config/starship.toml
add_newline = true
format = """
$directory$git_branch$git_status$git_state$python$nodejs$rust$golang$java$cmd_duration
$character"""
[character]
success_symbol = "[❯](bold green)"
error_symbol = "[❯](bold red)"
vimcmd_symbol = "[❮](bold yellow)"
[directory]
truncation_length = 4
truncate_to_repo = true
style = "bold cyan"
[git_branch]
symbol = " "
style = "bold purple"
[git_status]
style = "yellow"
ahead = "⇡${count}"
behind = "⇣${count}"
diverged = "⇕⇡${ahead_count}⇣${behind_count}"
[cmd_duration]
min_time = 2000
format = "took [$duration]($style) "
[python]
symbol = " "
format = '[${symbol}(${version} )(\($virtualenv\) )]($style)'
[nodejs]
symbol = " "

# ~/.config/tmux/tmux.conf
set -g prefix C-a            # ⌃A instead of ⌃B (Caps Lock → ⌃ makes this trivial)
unbind C-b
bind C-a send-prefix
set -g mouse on
set -g base-index 1
setw -g pane-base-index 1
set -g renumber-windows on
set -g history-limit 100000
set -g default-terminal "tmux-256color"
set -as terminal-features ",xterm-ghostty:RGB"
set -g escape-time 0
set -g focus-events on
bind | split-window -h -c "#{pane_current_path}"
bind - split-window -v -c "#{pane_current_path}"
bind h select-pane -L
bind j select-pane -D
bind k select-pane -U
bind l select-pane -R
bind r source-file ~/.config/tmux/tmux.conf \; display "reloaded"
set -g status-position top
# plugins via tpm: `git clone https://github.com/tmux-plugins/tpm ~/.tmux/plugins/tpm`
set -g @plugin 'tmux-plugins/tpm'
set -g @plugin 'tmux-plugins/tmux-sensible'
set -g @plugin 'tmux-plugins/tmux-yank'
set -g @plugin 'tmux-plugins/tmux-resurrect'
set -g @plugin 'catppuccin/tmux'
run '~/.tmux/plugins/tpm/tpm'

ssh-keygen -t ed25519 -C "alex@mbp-2026"
# passphrase: yes. Store it in the keychain so you type it once per login:
ssh-add --apple-use-keychain ~/.ssh/id_ed25519

Host *
  AddKeysToAgent yes
  UseKeychain yes
  IdentityFile ~/.ssh/id_ed25519
  ServerAliveInterval 60
  ServerAliveCountMax 3
  IdentitiesOnly yes

Host github.com
  User git

Host uni
  HostName login.cs.university.edu
  User alex42
  ForwardAgent no
  # ProxyJump bastion.university.edu

Host homelab
  HostName 100.101.102.103      # Tailscale IP
  User alex
  LocalForward 5432 localhost:5432

sudo sh -c 'sed "s/^#auth/auth/" /etc/pam.d/sudo_local.template > /etc/pam.d/sudo_local'
cat /etc/pam.d/sudo_local   # → auth sufficient pam_tid.so