1. **Model**: Add `commitRatio` calculated field to `DevIndex.model.Contributor`. - Logic: `(Total Commits / Total Contributions) * 100`. - Optimization: Reuse `totalCommits` if available (Record context), fallback to array reduction (Raw context). 2. **Grid**: Add "Commits %" column after "Total". - Format: 2 decimal places (e.g., "45.50%"). 3. **Controls**: Add filter for "High Automation" users based on this ratio.