Claude Code Status Line Setup

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Set up my Claude Code status line to be an exact copy of a specific design.

Use the `/statusline` command to do this — it pulls Claude Code's built-in **statusline-setup** skill that configures the status line setting. But transcribe the script below **verbatim**; do NOT improvise, redesign, or invent your own version.

**IMPORTANT — replace any existing status line:** If I already have a custom status line configured in `~/.claude/settings.json` (or anywhere else), remove/overwrite it so this one fully replaces it. There should be exactly one `statusLine` config when you're done, and it should be this one.

Steps:

1. Make sure `jq` is installed (it's required — without it the bar silently won't render). Check with `command -v jq`. If missing, install it (macOS: `brew install jq`; Debian/Ubuntu: `sudo apt-get install -y jq`).

2. Write this EXACT content to `~/.claude/statusline-command.sh` (create the `~/.claude` dir if needed), then `chmod +x` it:

```bash
#!/usr/bin/env bash
input=$(cat)

# ── Model detection ──────────────────────────────────────────
model_id=$(echo "$input" | jq -r '.model // empty')
if echo "$model_id" | grep -qi "opus"; then
  model_label="Opus 1M"
  total_tokens=1000000
elif echo "$model_id" | grep -qi "sonnet"; then
  model_label="Sonnet 200K"
  total_tokens=200000
elif echo "$model_id" | grep -qi "haiku"; then
  model_label="Haiku 200K"
  total_tokens=200000
else
  model_label="Claude"
  total_tokens=200000
fi

# ── Context window ───────────────────────────────────────────
remaining=$(echo "$input" | jq -r '.context_window.remaining_percentage // empty')

bar=""
face=""
if [ -n "$remaining" ]; then
  pct=$(printf "%.0f" "$remaining")

  # Free tokens (human-readable)
  free_tokens=$(( total_tokens * pct / 100 ))
  if [ "$free_tokens" -ge 1000000 ]; then
    free_label="$(( free_tokens / 1000 ))K"
  elif [ "$free_tokens" -ge 1000 ]; then
    free_label="$(( free_tokens / 1000 ))K"
  else
    free_label="${free_tokens}"
  fi

  # Color zone based on remaining %
  #   Green  > 20%  — safe
  #   Amber  10-20% — approaching compaction
  #   Red    < 10%  — compaction imminent
  if [ "$pct" -gt 20 ]; then
    color="\033[32m"   # green
  elif [ "$pct" -ge 10 ]; then
    color="\033[33m"   # yellow / amber
  else
    color="\033[31m"   # red
  fi
  reset="\033[0m"
  dim="\033[90m"

  # 20-char wide bar
  width=20
  filled=$(( pct * width / 100 ))
  [ "$filled" -gt "$width" ] && filled=$width
  empty_count=$(( width - filled ))

  filled_str=""
  empty_str=""
  for ((i=0; i<filled; i++)); do filled_str+="█"; done
  for ((i=0; i<empty_count; i++)); do empty_str+="░"; done

  bar="${color}${filled_str}${reset}${dim}${empty_str}${reset} ${pct}% ${free_label} free"

  # ── Smiley face (mood based on remaining context) ──────────
  if [ "$pct" -ge 75 ]; then
    face="😄"
  elif [ "$pct" -ge 55 ]; then
    face="😊"
  elif [ "$pct" -ge 40 ]; then
    face="😐"
  elif [ "$pct" -ge 30 ]; then
    face="😟"
  elif [ "$pct" -ge 20 ]; then
    face="😰"
  elif [ "$pct" -ge 10 ]; then
    face="😱"
  elif [ "$pct" -ge 3 ]; then
    face="🤮"
  else
    face="💀"
  fi
fi

# ── Worktree indicator ───────────────────────────────────────
# Show 🌳 on the far right when the current directory is a linked git worktree.
# A linked worktree has a per-worktree git dir that differs from the common git dir.
dir=$(echo "$input" | jq -r '.workspace.current_dir // .cwd // empty')
worktree_icon=""
if [ -n "$dir" ]; then
  git_dir=$(git -C "$dir" rev-parse --git-dir 2>/dev/null)
  git_common_dir=$(git -C "$dir" rev-parse --git-common-dir 2>/dev/null)
  if [ -n "$git_dir" ] && [ -n "$git_common_dir" ] && [ "$git_dir" != "$git_common_dir" ]; then
    worktree_icon=" 🌳"
  fi
fi

# ── Assemble output ──────────────────────────────────────────
output="${model_label}"
[ -n "$bar" ]           && output="${output} ${bar}"
[ -n "$face" ]          && output="${output} ${face}"
[ -n "$worktree_icon" ] && output="${output}${worktree_icon}"

printf "%b" "$output"
```

3. Wire it into `~/.claude/settings.json`. PRESERVE all my other existing settings — only add or replace the top-level `statusLine` key (replacing any status line I already had). Use my real absolute home path (run `echo $HOME` to get it; do not hardcode someone else's username):

```json
"statusLine": {
  "type": "command",
  "command": "bash <MY_HOME>/.claude/statusline-command.sh"
}
```

If `settings.json` doesn't exist, create it as valid JSON containing just that key. If it exists, merge carefully so the rest of the file is untouched and any previous `statusLine` is overwritten.

4. Confirm it works: pipe a sample payload through the script and show me the output, e.g.:

```bash
echo '{"model":"claude-opus-4","context_window":{"remaining_percentage":82}}' | bash ~/.claude/statusline-command.sh
```

It should print something like:  `Opus 1M ████████████████░░░░ 82% 820K free 😄`

The 🌳 worktree icon only appears when the current directory is an actual linked git worktree, so the sample payload above won't show it. To verify that branch, run it from inside a worktree (or feed a worktree path in), e.g.:

```bash
echo '{"model":"claude-opus-4","context_window":{"remaining_percentage":82},"workspace":{"current_dir":"'"$(pwd)"'"}}' | bash ~/.claude/statusline-command.sh
```

When `current_dir` is a linked worktree it should append ` 🌳` to the end of the line.

The expected status line format is: `<model label> <colored 20-char bar> <pct>% <free tokens> free <mood emoji> <🌳 if in a git worktree>`.

Variables