Collector now reports repos_public/repos_private (repos kept as the sum)
and a commits_daily[] series of 7 {date,commits} buckets (UTC days,
zero-filled), bucketed in Go from raw created_unix to avoid MySQL
session-timezone ambiguity. commits_7d is now the sum of those buckets
so the card total matches the sparkline.
Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>