Two final-review follow-ups from the whole-feature code review:
1. Important: group-by was bucketing adj_page.object_list (the paginated
50-row slice), making 'By Type' group headers show misleading per-page
totals once filters returned >50 rows. Konrad's current data is under
the threshold, but the UI promised whole-filter totals.
Fix: group_by runs on the full filtered queryset (list(adjustments))
BEFORE pagination. Template already branches on adj_groups, so we now
additionally hide the pagination nav when grouped — the group headers
act as their own navigation and their counts/sums reflect the whole
filter not just one page.
2. Minor: Apply after picking 'By Worker' silently reset to Flat view
because the filter form had hidden inputs for sort/order but not
group_by. Added the missing <input type='hidden' name='group_by'>
so the toggle round-trips across Apply.
65/65 tests still pass (no test changes — the previous tests' fixtures
are all <50 rows so neither the bug nor the fix shows up there, but
both behaviours are now correct).
3fe3e5aa01