feat: unify income payment cards and drop period comparisons (WealthLedger/main#33)

- income page renders only selected-period totals and payments; the
  comparison blocks, notices and display-only percentage math removed
- new shared PayoutCard presents executed payouts, forecasts and
  per-security schedules with explicit money semantics
- ledger rows, upcoming events, stock dividends and bond coupons use
  the same card; period filter lost its duplicated paper wrapper

src/pages/account-income/ui/AccountIncomePage/components/AccountIncomePageLoaded.view.tsx

@@ -12,7 +12,6 @@ import { useTranslation } from "react-i18next";
 import type { AccountIncomePageViewModel } from "../AccountIncomePage.vm";
 
 import classes from "../AccountIncomePage.module.css";
-import { IncomeComparisons } from "./IncomeComparisons.view";
 import { IncomePayments } from "./IncomePayments.view";
 import { IncomePeriodForm } from "./IncomePeriodForm/IncomePeriodForm.view";
 import { IncomeSummary } from "./IncomeSummary.view";
@@ -54,18 +53,6 @@ const AccountIncomePageLoaded: FC<LoadedProps> = (props) => {
 
 			<Alert color="blue">{t("income.taxBoundary")}</Alert>
 
-			<IncomeComparisons
-				comparison={display.previousComparison}
-				notice={t(`income.${display.previousNotice}`)}
-				title={t("income.previousPeriod")}
-			/>
-
-			<IncomeComparisons
-				comparison={display.comparison}
-				notice={t(`income.${display.yearNotice}`)}
-				title={t("income.yearAgo")}
-			/>
-
 			<IncomePayments entries={display.entries} />
 		</Stack>
 	);