#!/bin/bash
# Claude Code hook:把「忙/闲/等你」状态写回 tmux 的 pane_title(窗口列表里 claude: "..." 引号内那段)
# 用法(settings.json hooks):
#   UserPromptSubmit / PreToolUse  -> claude-tmux-busy-hook.sh busy   (⏳)
#   Notification                   -> claude-tmux-busy-hook.sh wait   (❗)
#   Stop                           -> claude-tmux-busy-hook.sh idle   (✳)
# 只在 tmux 里生效;不在 tmux 里静默退出。Linux/macOS 通用(不依赖 sed 的多字节支持)。
[ -n "$TMUX_PANE" ] || exit 0
tty=$(tmux display -p -t "$TMUX_PANE" '#{pane_tty}' 2>/dev/null) || exit 0
cur=$(tmux display -p -t "$TMUX_PANE" '#{pane_title}' 2>/dev/null)
base=$cur
for g in '✳' '⏳' '❗' '✅'; do base=${base#"$g"}; done
base=${base# }
case "$1" in
  busy) g='⏳' ;;
  wait) g='❗' ;;
  *)    g='✳' ;;
esac
printf '\033]0;%s %s\007' "$g" "$base" > "$tty"
exit 0