default label for the summary row — English so a zero-config table (no font registered) never
hits the Thai font guard just from adding an aggregate column (2026-07-07 — was 'รวม'; override
via summaryLabel if a Thai label is wanted, same as any other user-facing text)
default label for the summary row — English so a zero-config table (no font registered) never hits the Thai font guard just from adding an
aggregatecolumn (2026-07-07 — was 'รวม'; override viasummaryLabelif a Thai label is wanted, same as any other user-facing text)