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/account/ui/AccountPage/AccountPage.tsx

@@ -17,6 +17,7 @@ const AccountPage: FC<AccountPageProps> = (props) => {
 				account={viewModel.account}
 				accountId={viewModel.accountId}
 				refreshing={viewModel.refreshing}
+				sourceError={viewModel.sourceError}
 				refreshError={viewModel.refreshError}
 				retry={viewModel.retry}
 				recentOperations={viewModel.recentOperations}
@@ -28,9 +29,11 @@ const AccountPage: FC<AccountPageProps> = (props) => {
 		<AccountPageLoaded
 			account={viewModel.account}
 			accountId={viewModel.accountId}
+			partial={viewModel.partial}
 			portfolio={viewModel.portfolio}
 			positionSections={viewModel.positionSections}
 			refreshing={viewModel.refreshing}
+			sourceError={viewModel.sourceError}
 			refreshError={viewModel.refreshError}
 			retry={viewModel.retry}
 			recentOperations={viewModel.recentOperations}