• Initial release of the model-usage skill for summarizing per-model usage and cost from CodexBar CLI local cost logs.
• Supports both Codex and Claude providers.
• Allows fetching summaries for the current (most recent) model or all models.
• Provides both text and JSON output formats.
• Can process costs directly from CodexBar CLI output or from a JSON file/stdin.
• Includes guidance for CLI use and script automation.