Adds _group_adjustments helper that buckets a flat queryset by type or
by worker_id, with signed net_sum (+ for additive, - for deductive)
and descending-magnitude ordering so the biggest-impact bucket sits
at the top.
Template branches on adj_groups: grouped view renders one <tbody>
per group with a Bootstrap-collapse-driven header row, wrapping
include of _adjustment_row.html for the actual rows (no duplication).
Flat view is the default when group_by is empty.
By Type headers get a 4px left-border accent in the matching badge
colour so grouped rows visually echo the badges below them.
Attribute-selector based ([data-type=Bonus] etc.) so the
CSS stays self-descriptive without per-type class explosion.
Adds |money_abs template filter for signed render ('-R 100.00' in
the template becomes money_abs(-100) -> '100.00' after the caller
emits its own sign; avoids 'R -100.00' which reads wrong).
Two new tests lock in the bucket structure + net_sum signing for
both axes. Tests 58 -> 60. url_replace template tag already shipped
in the CP1 pagination fix - reused here for the toggle hrefs.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
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