Rollup mode emits a grand-total column group alongside the subtotals. The
subtotals are the point -- they are what per-branch collapse needs -- but
the grand total sums across the split, and when the split is Prior Year /
Plan / Forecast that sum is meaningless while looking exactly like a real
figure to anyone scanning the sheet.
The engine cannot separate the two: t_totals is { BEFORE, HIDDEN, AFTER },
and in a rollup the grand total *is* the root of the hierarchy that produces
the subtotals. Turning it off turns the subtotals off with it. So it is
hidden rather than suppressed -- the view still computes the column, it is
simply not painted, and collapsed to zero width so there is no gap where it
was.
Targeted by psp-split-total, excluding psp-split-subtotal, which is how the
datagrid already distinguishes them. That survives adding a measure or
rearranging the pivot; hiding by column position would not -- the group
spans one column per measure in `columns`.
Injected into the plugin's shadow root, since a document stylesheet cannot
reach inside it, and re-asserted on config updates because the plugin
element is replaced when the plugin changes.
Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
Paul Trowbridge
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