forgepulse: per-repository clone baselines, and a sidebar that folds on a 14-inch screen

The clone-trend arrows added to forgepulse two days ago were reading “stable” almost everywhere, and the cause was GitHub’s traffic API rather than the repositories: it reports a day’s row inconsistently per repository, so at any moment only a handful have a same-day daily_traffic entry while most lag behind, and a single fleet-wide “yesterday” cutoff therefore compares most repositories against data already included in their current total (762ea7b). The fix is to compare each repository’s clone total against one day before that repository’s own most recent row, computed in one query through a per-repository MAX(day), so the comparison never depends on a shared calendar date — verified live, the trends now show real up and down movement instead of universal stability.

The sidebar changed shape as well. It collapses into a slim first row on narrow windows, and the breakpoint was raised to 1400px and then to 1536px (d8cc9d8, d859e01) because a 14” MacBook Pro’s native 1512×982 sits above the lower cutoff even with the window maximized, which would have kept the persistent sidebar on exactly the laptop it was meant to fold on.