v2.158.2

Changes

• feat: Separate human vs bot activity in health dashboard (#3917)
  • Replace unreliable 'productive hours' metric with commit-type breakdown (Direct vs PR Merges)
  • Add cross-repo totals table (privacy-safe, no repo names exposed)
  • Deduplicate active days across repos using set union
  • Compute cross-repo summary once per pulse (not N times)
  • Use is_bot() consistently for committer filtering
  • New cross-repo-summary command in contributor-activity-helper.sh