feat: show persisted investment data and sync state

Consume the provided resource-envelope API snapshot. Preserve financial snapshots during
refresh, observe synchronization without importing, and fence late responses across
account and connection changes.

src/pages/accounts/ui/AccountsPage/components/AccountsPageLoading.view.tsx

@@ -9,7 +9,7 @@ const AccountsPageLoading: FC = () => {
 		<LoadingSkeleton label={t("states.loadingTitle")}>
 			<Skeleton height={32} width="30%" />
 			<Skeleton height={20} width="45%" />
-			<SimpleGrid cols={{ base: 1, lg: 2 }} spacing="lg" aria-hidden="true">
+			<SimpleGrid cols={1} spacing="lg" aria-hidden="true">
 				{[0, 1].map((index) => (
 					<Card key={index} padding="xl" radius="lg" withBorder>
 						<Stack gap="xl">