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/entities/broker-operation/ui/LedgerEntryRow.tsx

@@ -15,9 +15,13 @@ const LedgerEntryRow: FC<LedgerEntryRowProps> = (props) => {
 	const instrument =
 		operation.ticker ?? operation.instrumentType ?? t("ledger.noInstrument");
 	const payment = paymentPresentation(operation);
-	const metadata = [formatSnapshotTime(operation.occurredAt), instrument].join(
-		" · ",
-	);
+	const metadata = [
+		formatSnapshotTime(operation.occurredAt),
+		instrument,
+		operation.account?.name,
+	]
+		.filter(Boolean)
+		.join(" · ");
 
 	return (
 		<EntryCard