feat: add config/claude/statusline-command.sh

config/claude/statusline-command.sh

@@ -0,0 +1,64 @@
+#!/usr/bin/env bash
+# Claude Code statusline: token usage display
+# Receives JSON via stdin from Claude Code
+
+input=$(cat)
+
+# Model info
+model=$(echo "$input" | jq -r '.model.display_name // empty')
+
+# Working directory (basename)
+cwd=$(echo "$input" | jq -r '.workspace.current_dir // .cwd // empty')
+dir=$(basename "$cwd")
+
+# Context window usage
+ctx_size=$(echo "$input" | jq -r '.context_window.context_window_size // empty')
+used_pct=$(echo "$input" | jq -r '.context_window.used_percentage // empty')
+
+# Compute current context tokens as ctx_size * used_pct / 100
+ctx_used=""
+if [ -n "$ctx_size" ] && [ -n "$used_pct" ]; then
+  ctx_used=$(awk -v s="$ctx_size" -v p="$used_pct" 'BEGIN { printf "%d", s * p / 100 }')
+fi
+
+# Output tokens from the most recent assistant turn
+output_tokens=$(echo "$input" | jq -r '.context_window.current_usage.output_tokens // empty')
+
+# Format integer tokens: nk if >= 1000, otherwise raw int. Pure bash, no bc.
+fmt_k() {
+  local n=$1
+  if [ "$n" -ge 1000 ]; then
+    printf "%dk" "$(( (n + 500) / 1000 ))"
+  else
+    printf "%d" "$n"
+  fi
+}
+
+parts=()
+
+[ -n "$dir" ] && parts+=("$dir")
+[ -n "$model" ] && parts+=("$model")
+
+if [ -n "$ctx_used" ] && [ -n "$ctx_size" ]; then
+  parts+=("ctx:$(fmt_k "$ctx_used")/$(fmt_k "$ctx_size")")
+fi
+
+if [ -n "$used_pct" ]; then
+  parts+=("${used_pct}% used")
+fi
+
+if [ -n "$output_tokens" ] && [ "$output_tokens" -gt 0 ]; then
+  parts+=("out:$(fmt_k "$output_tokens")")
+fi
+
+# Join with " | "
+result=""
+for i in "${!parts[@]}"; do
+  if [ "$i" -eq 0 ]; then
+    result="${parts[$i]}"
+  else
+    result="$result | ${parts[$i]}"
+  fi
+done
+
+echo "$result"