commit 29e2149d6625de32bb184c5f88028ebffe3c631b
Author: syui <syui@syui.ai>
Date:   Mon Mar 30 17:38:45 2026 +0900

    init

diff --git a/.gitconfig b/.gitconfig
new file mode 100644
index 0000000..a8c6f34
--- /dev/null
+++ b/.gitconfig
@@ -0,0 +1,12 @@
+[user]
+	name = syui
+	email = syui@syui.ai
+	signingkey = 5417CFEBAD92DF56
+[commit]
+	gpgsign = true
+[core]
+	editor = vim
+[pull]
+	rebase = false
+[init]
+	defaultBranch = main
diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..a528052
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,12 @@
+.DS_Store
+.env
+.claude
+Cargo.lock
+node_modules
+package-lock.json
+/target
+/dist
+/claude.md
+/CLAUDE.md
+/tmp
+*.swp
diff --git a/.hushlogin b/.hushlogin
new file mode 100644
index 0000000..e69de29
diff --git a/.local/bin/git-ci b/.local/bin/git-ci
new file mode 100755
index 0000000..d8b30e0
--- /dev/null
+++ b/.local/bin/git-ci
@@ -0,0 +1,10 @@
+#!/bin/bash
+if [ $# -eq 0 ]; then
+  git commit -v
+else
+  if [ "$1" = "--amend" ]; then
+    git commit -v --amend
+  else
+			git commit -m "$*"
+  fi
+fi
diff --git a/.local/bin/git-orphan b/.local/bin/git-orphan
new file mode 100755
index 0000000..baf78ed
--- /dev/null
+++ b/.local/bin/git-orphan
@@ -0,0 +1,7 @@
+#!/bin/bash
+git checkout --orphan temp
+git add -A
+git commit -m "init"
+git branch -D main
+git branch -m temp main
+git push -f origin main
diff --git a/.local/bin/vren b/.local/bin/vren
new file mode 100755
index 0000000..1667280
--- /dev/null
+++ b/.local/bin/vren
@@ -0,0 +1,65 @@
+#!/bin/zsh
+# vren - rename files with vim
+# usage: vren [dir]
+
+dir="${1:-.}"
+cd "$dir" || exit 1
+
+# git init if no .git
+has_git=0
+if [ -d .git ]; then
+  has_git=1
+else
+  git init -q
+  git add -A
+  git commit -q -m "before rename"
+fi
+
+# list files
+old=$(mktemp)
+new=$(mktemp)
+ls -1 > "$old"
+cp "$old" "$new"
+
+# edit
+vim "$new"
+
+# check
+old_count=$(wc -l < "$old")
+new_count=$(wc -l < "$new")
+if [ "$old_count" -ne "$new_count" ]; then
+  echo "error: line count mismatch ($old_count -> $new_count)"
+  rm "$old" "$new"
+  exit 1
+fi
+
+# diff
+changes=0
+paste "$old" "$new" | while IFS=$'\t' read -r o n; do
+  [ "$o" != "$n" ] && echo "  $o -> $n" && changes=$((changes+1))
+done
+
+if ! diff -q "$old" "$new" >/dev/null 2>&1; then
+  echo ""
+  printf "apply? (y/n): "
+  read -q ans
+  echo ""
+  if [ "$ans" = "y" ]; then
+    paste "$old" "$new" | while IFS=$'\t' read -r o n; do
+      [ "$o" != "$n" ] && mv -- "$o" "$n"
+    done
+    echo "done"
+    # restore point
+    if [ "$has_git" -eq 0 ]; then
+      git add -A
+      git commit -q -m "after rename"
+      echo "restore: git log / git checkout HEAD~1 -- ."
+    fi
+  else
+    echo "cancelled"
+  fi
+else
+  echo "no changes"
+fi
+
+rm "$old" "$new"
diff --git a/.local/share/fonts/aifont.ttf b/.local/share/fonts/aifont.ttf
new file mode 100644
index 0000000..0725d4a
Binary files /dev/null and b/.local/share/fonts/aifont.ttf differ
diff --git a/.tmux.conf b/.tmux.conf
new file mode 100644
index 0000000..c50bcf9
--- /dev/null
+++ b/.tmux.conf
@@ -0,0 +1,52 @@
+# prefix
+unbind C-b
+set -g prefix ^T
+bind t send-prefix
+
+# general
+set -s escape-time 0
+set -g base-index 1
+set -g pane-base-index 1
+set -g renumber-windows on
+set -g history-limit 10000
+set -g default-terminal "xterm-256color"
+set -g allow-passthrough on
+set -g set-clipboard on
+set-window-option -g mode-keys vi
+set-window-option -g xterm-keys on
+
+# pane/window
+bind s split-window -v -c "#{pane_current_path}"
+bind v split-window -h -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 C-h resize-pane -L 5
+bind -r C-j resize-pane -D 5
+bind -r C-k resize-pane -U 5
+bind -r C-l resize-pane -R 5
+bind K kill-pane
+bind c new-window
+bind w choose-window
+bind C-t run "tmux last-pane || tmux last-window || tmux new-window"
+
+# copy
+bind ^y copy-mode
+bind -r ^"[" copy-mode
+bind p paste-buffer
+bind-key -T copy-mode-vi v send-keys -X begin-selection
+bind-key -T copy-mode-vi Space send-keys -X begin-selection
+if-shell "uname | grep -q Darwin" \
+  'bind-key -T copy-mode-vi y send -X copy-pipe-and-cancel "pbcopy"; bind-key -T copy-mode-vi Enter send -X copy-pipe-and-cancel "pbcopy"'
+if-shell 'which xclip' \
+  'bind-key -T copy-mode-vi y send-keys -X copy-pipe-and-cancel "xclip -i -sel c"; bind-key -T copy-mode-vi Enter send-keys -X copy-pipe-and-cancel "xclip -i -sel c"'
+
+# url open
+bind u run-shell "~/.tmux/plugin/urlopen.zsh"
+
+# plugins
+run-shell "~/.tmux/plugin/ailog.zsh"
+
+# reload
+bind r source-file ~/.tmux.conf\; display-message "reloaded"
diff --git a/.tmux/plugin/ailog.zsh b/.tmux/plugin/ailog.zsh
new file mode 100755
index 0000000..9b3fb2e
--- /dev/null
+++ b/.tmux/plugin/ailog.zsh
@@ -0,0 +1,107 @@
+#!/bin/zsh
+# tmux plugin: ailog powerline status bar
+# requires: aifont, ailog, jq
+
+INTERVAL=60
+SEP=$'\ue0b0'
+RSEP=$'\ue0b2'
+
+get_icon() {
+  local handle=$(ailog pds s 2>/dev/null | jq -r '.handle // empty' 2>/dev/null)
+  case "$handle" in
+    ai.*) echo $'\ue001' ;;
+    syui.*) echo $'\ue002' ;;
+    *)    echo "❯" ;;
+  esac
+}
+
+get_cfg() {
+  case "$(uname)" in
+    Darwin) echo "$HOME/Library/Application Support/ai.syui.log/config.json" ;;
+    *)      echo "${XDG_CONFIG_HOME:-$HOME/.config}/ai.syui.log/config.json" ;;
+  esac
+}
+
+has_aifont() {
+  [ -f "$HOME/Library/Fonts/aifont.ttf" ] || [ -f "$HOME/.local/share/fonts/aifont.ttf" ]
+}
+
+can_run() {
+  local cfg=$(get_cfg)
+  command -v ailog &>/dev/null && command -v jq &>/dev/null && [ -f "$cfg" ] && has_aifont
+}
+
+get_handle() {
+  ailog pds s 2>/dev/null | jq -r '.handle // empty' 2>/dev/null
+}
+
+get_notify_count() {
+  ailog notify count 2>/dev/null | jq -r '.count // 0' 2>/dev/null
+}
+
+get_latest_post() {
+  local data=$(ailog f tl -l 1 2>/dev/null | tr -d '\t' | sed 's/\\n/ /g')
+  local handle=$(echo "$data" | jq -r '.feed[0].post.author.handle // empty' 2>/dev/null | cut -d. -f1)
+  local full=$(echo "$data" | jq -r '.feed[0].post.record.text // empty' 2>/dev/null | tr '\n' ' ')
+  local text="${full:0:20}"
+  [[ ${#full} -gt 20 ]] && text+="..."
+  [ -n "$text" ] && echo "@${handle} ${text}"
+}
+
+status_left() {
+  can_run || return
+  local handle=$(get_handle)
+  local count=$(get_notify_count)
+  local post=$(get_latest_post)
+
+  local icon=$(get_icon)
+  local out=""
+  out+="#[fg=yellow,bg=black] ${icon} "
+  out+="#[fg=black,bg=colour234]${SEP}"
+  out+="#[fg=yellow,bg=colour234] @${handle} "
+  if [ -n "$count" ] && [ "$count" != "0" ] && [ "$count" != "null" ]; then
+    out+="#[fg=colour234,bg=black]${SEP}"
+    out+="#[fg=yellow,bg=black] ${count} "
+  else
+    out+="#[fg=colour234,bg=black]${SEP}"
+  fi
+  if [ -n "$post" ]; then
+    out+="#[fg=white,bg=black] ${post} "
+  fi
+  out+="#[fg=black,bg=default]${SEP}#[default] "
+  echo -n "$out"
+}
+
+get_pds() {
+  ailog pds s 2>/dev/null | jq -r '.issuer // empty' 2>/dev/null | sed 's|https://||'
+}
+
+status_right() {
+  local pds=$(get_pds)
+  local out=""
+  if [ -n "$pds" ]; then
+    out+="#[fg=colour236]${RSEP}#[fg=cyan,bg=colour236] ${pds} "
+  fi
+  out+="#[fg=colour234]${RSEP}#[fg=white,bg=colour234] #S "
+  echo -n "$out"
+}
+
+case "$1" in
+  left)   status_left ;;
+  right)  status_right ;;
+  notify) get_notify_count ;;
+  handle) get_handle ;;
+  latest) get_latest_post ;;
+  *)
+    if can_run; then
+      tmux set-option -g status-style "bg=default,fg=white"
+      tmux set-window-option -g window-status-format ""
+      tmux set-window-option -g window-status-current-format ""
+      tmux set-option -g status-left-length 100
+      tmux set-option -g status-right-length 50
+      tmux set-option -g status-left "#(~/.tmux/plugin/ailog.zsh left)"
+      tmux set-option -g status-right "#(~/.tmux/plugin/ailog.zsh right)#[fg=black,bg=colour234]${RSEP}#[fg=white,bg=black] %Y-%m-%dT%H:%M "
+      tmux set-option -g status-interval $INTERVAL
+    fi
+    ;;
+esac
diff --git a/.tmux/plugin/urlopen.zsh b/.tmux/plugin/urlopen.zsh
new file mode 100755
index 0000000..b08cfe2
--- /dev/null
+++ b/.tmux/plugin/urlopen.zsh
@@ -0,0 +1,7 @@
+#!/bin/zsh
+url=$(tmux capture-pane -pJ -S -100 | grep -oE 'https?://[^ ]+' | tail -1)
+[ -z "$url" ] && exit 0
+case "$(uname)" in
+  Darwin) open "$url" ;;
+  *)      xdg-open "$url" ;;
+esac
diff --git a/.vim/plugin/autosave.vim b/.vim/plugin/autosave.vim
new file mode 100644
index 0000000..05bcf31
--- /dev/null
+++ b/.vim/plugin/autosave.vim
@@ -0,0 +1,26 @@
+if exists('g:loaded_autosave')
+  finish
+endif
+let g:loaded_autosave = 1
+
+let g:autosave = get(g:, 'autosave', 0)
+
+fu! s:autosave_start()
+  aug autosave
+    au!
+    au TextChanged,CursorHold,InsertLeave * sil! update
+  aug END
+  echo 'autosave: on'
+endf
+
+fu! s:autosave_stop()
+  au! autosave
+  echo 'autosave: off'
+endf
+
+com! AirsaveOn  call <SID>autosave_start()
+com! AirsaveOff call <SID>autosave_stop()
+
+if g:autosave
+  call <SID>autosave_start()
+endif
diff --git a/.vimrc b/.vimrc
new file mode 100644
index 0000000..f52ffa9
--- /dev/null
+++ b/.vimrc
@@ -0,0 +1,37 @@
+set nocompatible
+set encoding=utf-8
+set fileencoding=utf-8
+set number
+set ruler
+set cursorline
+set showmatch
+set laststatus=2
+set wildmenu
+set showcmd
+
+set tabstop=4
+set shiftwidth=4
+set softtabstop=4
+set autoindent
+set smartindent
+
+set incsearch
+set hlsearch
+set ignorecase
+set smartcase
+set wrapscan
+
+set backspace=indent,eol,start
+set clipboard=unnamed
+set mouse=a
+set ttimeoutlen=10
+
+let g:autosave = 1
+nnoremap Q :q!<CR>
+
+call plug#begin('~/.vim/plugged')
+Plug 'github/copilot.vim'
+call plug#end()
+
+syntax on
+filetype plugin indent on
diff --git a/.zsh/plugin/cdselect.zsh b/.zsh/plugin/cdselect.zsh
new file mode 100644
index 0000000..55c916f
--- /dev/null
+++ b/.zsh/plugin/cdselect.zsh
@@ -0,0 +1,57 @@
+autoload -Uz chpwd_recent_dirs cdr add-zsh-hook
+add-zsh-hook chpwd chpwd_recent_dirs
+zstyle ':chpwd:*' recent-dirs-max 50
+
+cdselect() {
+  local dirs=("${(@f)$(cdr -l 2>/dev/null | sed 's/^[0-9]* *//')}")
+  [[ ${#dirs} -eq 0 ]] && return
+  local query="" cursor=1 selected=""
+  while true; do
+    local filtered=()
+    for d in "${dirs[@]}"; do
+      local match=1
+      for word in ${(s: :)query}; do
+        [[ "${d:l}" != *"${word:l}"* ]] && match=0 && break
+      done
+      [[ $match -eq 1 ]] && filtered+=("$d")
+    done
+    # sort by path length (shortest first)
+    local sorted=()
+    for f in "${filtered[@]}"; do sorted+=("${#f} $f"); done
+    sorted=(${(n)sorted})
+    filtered=()
+    for s in "${sorted[@]}"; do filtered+=("${s#* }"); done
+    [[ $cursor -gt ${#filtered} ]] && cursor=${#filtered}
+    [[ $cursor -lt 1 ]] && cursor=1
+    clear
+    echo "cd> $query"
+    local i=1
+    for d in "${filtered[@]}"; do
+      if [[ $i -eq $cursor ]]; then
+        printf "\e[7m  %s\e[0m\n" "$d"
+      else
+        printf "  %s\n" "$d"
+      fi
+      ((i++))
+      [[ $i -gt 20 ]] && break
+    done
+    read -k1 key 2>/dev/null
+    case "$key" in
+      $'\n'|$'\r') [[ ${#filtered} -gt 0 ]] && selected="${filtered[$cursor]}"; break ;;
+      $'\x0e') ((cursor++)) ;;  # C-n
+      $'\x10') ((cursor--)) ;;  # C-p
+      $'\x7f'|$'\b') query="${query%?}"; cursor=1 ;;
+      $'\x1b') break ;;
+      *) query+="$key"; cursor=1 ;;
+    esac
+  done
+  clear
+  if [[ -n "$selected" ]]; then
+    selected="${selected/#\~/$HOME}"
+    selected="${selected//\\ / }"
+    cd "$selected"
+  fi
+  zle reset-prompt
+}
+zle -N cdselect
+bindkey '^j' cdselect
diff --git a/.zsh/plugin/cdup.zsh b/.zsh/plugin/cdup.zsh
new file mode 100644
index 0000000..660b752
--- /dev/null
+++ b/.zsh/plugin/cdup.zsh
@@ -0,0 +1,3 @@
+cdup() { [[ -z "$BUFFER" ]] && { cd ..; zle reset-prompt } || zle self-insert 'k' }
+zle -N cdup
+bindkey '^k' cdup
diff --git a/.zsh/plugin/clipcopy.zsh b/.zsh/plugin/clipcopy.zsh
new file mode 100644
index 0000000..c296107
--- /dev/null
+++ b/.zsh/plugin/clipcopy.zsh
@@ -0,0 +1,14 @@
+# copy prompt buffer to clipboard
+# C-p C-p (chord)
+
+clipcopy() {
+  if [[ -n "$BUFFER" ]]; then
+    case "$(uname)" in
+      Darwin) echo -n "$BUFFER" | pbcopy ;;
+      *)      echo -n "$BUFFER" | xclip -sel c 2>/dev/null ;;
+    esac
+    zle -M "copied"
+  fi
+}
+zle -N clipcopy
+bindkey '^p^p' clipcopy
diff --git a/.zsh/plugin/fileselect.zsh b/.zsh/plugin/fileselect.zsh
new file mode 100644
index 0000000..be8f452
--- /dev/null
+++ b/.zsh/plugin/fileselect.zsh
@@ -0,0 +1,49 @@
+# file select - search files and insert into prompt
+# C-f: open file selector
+
+fileselect() {
+  local files=("${(@f)$(find . -maxdepth 3 -not -path '*/\.git/*' -type f 2>/dev/null | sed 's|^\./||' | sort)}")
+  [[ ${#files} -eq 0 ]] && return
+  local query="" cursor=1 selected=""
+  while true; do
+    local filtered=()
+    for f in "${files[@]}"; do
+      local match=1
+      for word in ${(s: :)query}; do
+        [[ "${f:l}" != *"${word:l}"* ]] && match=0 && break
+      done
+      [[ $match -eq 1 ]] && filtered+=("$f")
+    done
+    [[ $cursor -gt ${#filtered} ]] && cursor=${#filtered}
+    [[ $cursor -lt 1 ]] && cursor=1
+    clear
+    echo "file> $query (${#filtered})"
+    local i=1
+    for f in "${filtered[@]}"; do
+      if [[ $i -eq $cursor ]]; then
+        printf "\e[7m  %s\e[0m\n" "$f"
+      else
+        printf "  %s\n" "$f"
+      fi
+      ((i++))
+      [[ $i -gt 20 ]] && break
+    done
+    read -k1 key 2>/dev/null
+    case "$key" in
+      $'\n'|$'\r') [[ ${#filtered} -gt 0 ]] && selected="${filtered[$cursor]}"; break ;;
+      $'\x0e') ((cursor++)) ;;  # C-n
+      $'\x10') ((cursor--)) ;;  # C-p
+      $'\x7f'|$'\b') query="${query%?}"; cursor=1 ;;
+      $'\x1b') break ;;
+      *) query+="$key"; cursor=1 ;;
+    esac
+  done
+  clear
+  if [[ -n "$selected" ]]; then
+    BUFFER+="$selected"
+    CURSOR=${#BUFFER}
+  fi
+  zle reset-prompt
+}
+zle -N fileselect
+bindkey '^f' fileselect
diff --git a/.zsh/plugin/histselect.zsh b/.zsh/plugin/histselect.zsh
new file mode 100644
index 0000000..d5d804b
--- /dev/null
+++ b/.zsh/plugin/histselect.zsh
@@ -0,0 +1,49 @@
+# history select - search history and insert into prompt
+# C-r: open history selector, type to filter, C-n/C-p to move, Enter to insert
+
+histselect() {
+  local lines=("${(@f)$(fc -l -n -r 1 | awk '!seen[$0]++')}")
+  [[ ${#lines} -eq 0 ]] && return
+  local query="" cursor=1 selected=""
+  while true; do
+    local filtered=()
+    for l in "${lines[@]}"; do
+      local match=1
+      for word in ${(s: :)query}; do
+        [[ "${l:l}" != *"${word:l}"* ]] && match=0 && break
+      done
+      [[ $match -eq 1 ]] && filtered+=("$l")
+    done
+    [[ $cursor -gt ${#filtered} ]] && cursor=${#filtered}
+    [[ $cursor -lt 1 ]] && cursor=1
+    clear
+    echo "hist> $query"
+    local i=1
+    for l in "${filtered[@]}"; do
+      if [[ $i -eq $cursor ]]; then
+        printf "\e[7m  %s\e[0m\n" "$l"
+      else
+        printf "  %s\n" "$l"
+      fi
+      ((i++))
+      [[ $i -gt 20 ]] && break
+    done
+    read -k1 key 2>/dev/null
+    case "$key" in
+      $'\n'|$'\r') [[ ${#filtered} -gt 0 ]] && selected="${filtered[$cursor]}"; break ;;
+      $'\x0e') ((cursor++)) ;;  # C-n
+      $'\x10') ((cursor--)) ;;  # C-p
+      $'\x7f'|$'\b') query="${query%?}"; cursor=1 ;;
+      $'\x1b') break ;;
+      *) query+="$key"; cursor=1 ;;
+    esac
+  done
+  clear
+  if [[ -n "$selected" ]]; then
+    BUFFER="$selected"
+    CURSOR=${#BUFFER}
+  fi
+  zle reset-prompt
+}
+zle -N histselect
+bindkey '^r' histselect
diff --git a/.zsh/plugin/powerline.zsh b/.zsh/plugin/powerline.zsh
new file mode 100644
index 0000000..2bf1daa
--- /dev/null
+++ b/.zsh/plugin/powerline.zsh
@@ -0,0 +1,55 @@
+# powerline prompt
+# requires: aifont (MesloLGS NF + ai/syui icons)
+
+_has_aifont() {
+  [[ -f "$HOME/Library/Fonts/aifont.ttf" ]] || [[ -f "$HOME/.local/share/fonts/aifont.ttf" ]]
+}
+
+_powerline_git() {
+  local branch=$(git symbolic-ref --short HEAD 2>/dev/null) || return
+  local dirty=""
+  [[ -n $(git status --porcelain 2>/dev/null) ]] && dirty="*"
+  echo "${branch}${dirty}"
+}
+
+_powerline_icon() {
+  case "$USER" in
+    syui) echo $'\ue002' ;;
+    ai)   echo $'\ue001' ;;
+    *)    echo "❯" ;;
+  esac
+}
+
+_powerline_prompt() {
+  local icon=$(_powerline_icon)
+  local sep=$'\ue0b0'
+  local dir="${PWD/#$HOME/~}"
+  local git=$(_powerline_git)
+
+  local prompt=""
+  if [[ -n "$icon" ]]; then
+    prompt+="%F{yellow}%K{black} ${icon} %k%f"
+    prompt+="%F{black}%K{234}${sep}%f"
+  else
+    prompt+="%F{234}${sep}%f"
+  fi
+  prompt+="%F{yellow}%K{234} $USER %k%f"
+  prompt+="%F{234}%K{236}${sep}%f"
+  prompt+="%F{white}%K{236} ${dir} %k%f"
+
+  if [[ -n "$git" ]]; then
+    prompt+="%F{236}%K{234}${sep}%f"
+    prompt+="%F{cyan}%K{234}  ${git} %k%f"
+    prompt+="%F{234}${sep}%f"
+  else
+    prompt+="%F{236}${sep}%f"
+  fi
+  prompt+="%k%f "
+
+  echo "$prompt"
+}
+
+if _has_aifont; then
+  setopt PROMPT_SUBST
+  PROMPT='$(_powerline_prompt)'
+fi
diff --git a/.zshrc b/.zshrc
new file mode 100644
index 0000000..5c20661
--- /dev/null
+++ b/.zshrc
@@ -0,0 +1,64 @@
+export CARGO_HOME="$HOME/.cargo"
+export RUSTUP_HOME="$HOME/.rustup"
+export PATH="$HOME/.cargo/bin:$HOME/.local/bin:$PATH"
+
+if command -v tmux &>/dev/null && [ -z "$TMUX" ] && [ -z "$SSH_CONNECTION" ]; then
+  tmux new
+fi
+
+alias c="claude"
+alias t="tmux"
+alias v="vim"
+alias ts="vim ~/.tmux.conf"
+alias vs="vim ~/.vimrc"
+alias zs="vim ~/.zshrc"
+alias zr="exec $SHELL && . ~/.zshrc"
+alias ll="ls -alh"
+alias df="df -H"
+alias f="vren"
+
+zmodload zsh/complist
+zstyle ':completion:*' menu select
+zstyle ':completion:*' matcher-list 'm:{a-zA-Z}={A-Za-z}'
+autoload -Uz compinit
+compinit
+bindkey -M menuselect '^n' down-line-or-history
+bindkey -M menuselect '^p' up-line-or-history
+#bindkey -M menuselect '^j' accept-and-menu-complete
+
+HISTSIZE=10000
+SAVEHIST=10000
+HISTFILE=~/.zsh_history
+setopt SHARE_HISTORY
+setopt HIST_IGNORE_DUPS
+
+case $OSTYPE in
+  darwin*)
+    alias ls="ls -aG"
+    alias ll="ls -alhG"
+    alias date=/opt/homebrew/bin/gdate
+    alias u="brew update && brew upgrade && brew doctor"
+    export PATH="/opt/homebrew/bin:$PATH"
+    ;;
+  linux*)
+    alias ls="ls -a --color=auto"
+    alias ll="ls -alh --color=auto"
+    alias u="sudo pacman -Syu --noconfirm"
+    fpath=(/usr/share/zsh/site-functions $fpath)
+    ;;
+esac
+
+for p in /opt/homebrew/share /usr/share/zsh/plugins; do
+  [ -f "$p/zsh-autosuggestions/zsh-autosuggestions.zsh" ] && source "$p/zsh-autosuggestions/zsh-autosuggestions.zsh"
+  [ -f "$p/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh" ] && source "$p/zsh-syntax-highlighting/zsh-syntax-highlighting.zsh"
+  [ -f "$p/zsh-history-substring-search/zsh-history-substring-search.zsh" ] && source "$p/zsh-history-substring-search/zsh-history-substring-search.zsh"
+done
+
+bindkey '^[[A' history-substring-search-up
+bindkey '^[[B' history-substring-search-down
+
+chpwd() { ls }
+
+for f in ~/.zsh/plugin/*.zsh; do source "$f"; done
+
+
diff --git a/install.zsh b/install.zsh
new file mode 100755
index 0000000..7d69f28
--- /dev/null
+++ b/install.zsh
@@ -0,0 +1,51 @@
+#!/bin/zsh
+# dotfiles installer
+# usage: ./install.zsh [dotfiles_dir]
+
+dotdir="${1:-$HOME/dotfiles}"
+
+files=(.zshrc .vimrc .tmux.conf .gitconfig)
+dirs=(.zsh .vim/plugin .tmux .local/bin .local/share/fonts)
+
+# backup and symlink files
+for f in "${files[@]}"; do
+  src="$dotdir/$f"
+  dst="$HOME/$f"
+  [ ! -f "$src" ] && continue
+  if [ -e "$dst" ] && [ ! -L "$dst" ]; then
+    mv "$dst" "${dst}.bak"
+    echo "backup: $dst -> ${dst}.bak"
+  fi
+  ln -sf "$src" "$dst"
+  echo "link: $dst -> $src"
+done
+
+# symlink directories
+for d in "${dirs[@]}"; do
+  src="$dotdir/.${d#.}"
+  dst="$HOME/.${d#.}"
+  # handle nested dirs
+  if [[ "$d" == */* ]]; then
+    src="$dotdir/$d"
+    dst="$HOME/$d"
+    mkdir -p "$(dirname "$dst")"
+  else
+    src="$dotdir/$d"
+    dst="$HOME/$d"
+  fi
+  [ ! -d "$src" ] && continue
+  if [ -d "$dst" ] && [ ! -L "$dst" ]; then
+    mv "$dst" "${dst}.bak"
+    echo "backup: $dst -> ${dst}.bak"
+  fi
+  ln -sf "$src" "$dst"
+  echo "link: $dst -> $src"
+done
+
+# install font (mac only)
+if [ "$(uname)" = "Darwin" ] && [ -f "$dotdir/.local/share/fonts/aifont.ttf" ]; then
+  cp -f "$dotdir/.local/share/fonts/aifont.ttf" ~/Library/Fonts/aifont.ttf
+  echo "font: aifont.ttf -> ~/Library/Fonts/"
+fi
+
+echo "done"