Align BudgetTable on the income-statement standard shipped for the
compare/trend reports: sections now read Income -> Expense -> Transfer
(useBudget's TYPE_ORDER and BudgetTable's typeOrder both flipped), and
the previously unlabeled grand-total row is replaced by two interleaved
result rows (Result before transfers / Net result), computed by a new
pure, tested module (budgetTableResults.ts) mirroring compareResults.ts's
shape. Roll-up covers the previous-year-actual, budgeted-annual, and
budgeted-monthly columns alike.
All categories remain displayed (the grid stays a full edit surface) --
no collapse, no empty-row toggle, matching this issue's frozen decisions.
Resolves#278
