GitHub Copilot CLI でもステータスラインをカスタムしたい

❯ /experimental show
● 🧪 Experimental Features

  The following experimental features can be enabled with `/experimental on`:

  Feature Flags:
    PERSISTED_PERMISSIONS        - Enable persisted tool permissions across sessions on a per-location basis
    SESSION_CLEANUP              - Enable /session cleanup and /session prune commands for managing session
  storage
    SUBAGENT_COMPACTION          - Enable compaction instead of truncation for subagents
    SESSION_STORE                - Enable SQLite-based session store for cross-session history, file
  tracking, and search
    STATUS_LINE                  - Enable custom status line functionality that executes user-defined scripts
    SHOW_FILE                    - Enable a tool which allows the agent to show you code snippets within the
  timeline

  ⚠️  These features are not stable, may have bugs, and may be removed in the future.

  Usage: /experimental show  - Show this help
         /experimental on    - Enable experimental mode
         /experimental off   - Disable experimental mode

❯ /experimental on
● Experimental mode is enabled. These features are not stable, may have bugs, and may be removed in the
  future. Please restart the CLI for changes to take effect.

{
  "status_line": {
    "type": "command",
    "command": "/Users/nnstt1/.copilot/status-line.sh"
  }
}

#!/bin/bash

STATUS_JSON=$(cat)

# Git ブランチ
GIT_BRANCH=$(git branch --show-current 2>/dev/null)

# Azure サブスクリプション
AZ_SUB=$(az account show --query "name" -o tsv 2>/dev/null)

# Premium requests消費数
PREMIUM_REQS=$(echo "$STATUS_JSON" | jq -r '.cost.total_premium_requests // empty' 2>/dev/null)

# コード変更行数
LINES_ADDED=$(echo "$STATUS_JSON" | jq -r '.cost.total_lines_added // empty' 2>/dev/null)
LINES_REMOVED=$(echo "$STATUS_JSON" | jq -r '.cost.total_lines_removed // empty' 2>/dev/null)

# 表示内容の組み立て
PARTS=()
[ -n "$GIT_BRANCH" ] && PARTS+=("🌿 $GIT_BRANCH")
[ -n "$AZ_SUB" ] && PARTS+=("☁️ $AZ_SUB")
PARTS+=("⚡ ${PREMIUM_REQS:-0} req")
PARTS+=("📝 +${LINES_ADDED:-0}/-${LINES_REMOVED:-0}")

# スペース区切りで出力
echo "${PARTS[*]}"

{
  "cwd": "/path/to/project",
  "session_id": "uuid",
  "transcript_path": "/path/to/session",
  "model": {
    "id": "claude-sonnet-4.6",
    "display_name": "claude-sonnet-4.6 (medium) (1x)"
  },
  "workspace": {
    "current_dir": "/path/to/project"
  },
  "version": "0.0.418",
  "cost": {
    "total_api_duration_ms": 425149,
    "total_lines_added": 6,
    "total_lines_removed": 7,
    "total_duration_ms": 4126505,
    "total_premium_requests": 4
  },
  "context_window": {
    "total_input_tokens": 6295154,
    "total_output_tokens": 15584,
    "total_cache_read_tokens": 5953752,
    "total_cache_write_tokens": 0,
    "total_tokens": 6310738,
    "context_window_size": 200000,
    "used_percentage": 100,
    "remaining_percentage": 0,
    "remaining_tokens": 0,
    "current_usage": {
      "input_tokens": 6295154,
      "output_tokens": 15584,
      "cache_creation_input_tokens": 0,
      "cache_read_input_tokens": 5953752
    }
  }
}