feat: add all-accounts portfolio pages

Reuse account sections and group securities with per-account holdings.

Use Mantine Select to preserve filters and reset pagination on scope changes.

Document component reuse guardrails and cover routes, grouping and scope switching.

src/pages/account-operations/ui/AccountOperationsPage.tsx

@@ -4,8 +4,10 @@ import { AccountOperationsPageError } from "./components/AccountOperationsPageEr
 import { AccountOperationsPageLoaded } from "./components/AccountOperationsPageLoaded.view";
 import { AccountOperationsPageLoading } from "./components/AccountOperationsPageLoading.view";
 
-const AccountOperationsPage: FC = () => {
-	const viewModel = useAccountOperationsPageVm();
+type AccountOperationsPageProps = { accountId?: string };
+
+const AccountOperationsPage: FC<AccountOperationsPageProps> = (props) => {
+	const viewModel = useAccountOperationsPageVm(props.accountId);
 
 	if (viewModel.state === "loading") {
 		return <AccountOperationsPageLoading />;