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/entities/brokerage-account/ui/BrokerageAccountList/BrokerageAccountList.stories.tsx

@@ -185,3 +185,44 @@ export const LargeValues: Story = {
 		]),
 	},
 };
+
+export const IndependentFreshness: Story = {
+	name: "Независимая свежесть и ошибка сводок",
+	args: {
+		accounts: brokerageAccountCards(
+			[
+				syntheticAccount,
+				{
+					...syntheticAccount,
+					id: "waiting",
+					name: "Новый счёт",
+					portfolioSummary: null,
+				},
+			],
+			[
+				{
+					resourceKey: "portfolio/storybook-account",
+					dataRevision: "1",
+					stateVersion: "failed",
+					availability: "complete",
+					freshness: "stale",
+					lastSuccessfulAt: "2026-09-24T10:30:00Z",
+					sync: {
+						id: "failed",
+						state: "failed",
+						errorCode: "TBANK_UNAVAILABLE",
+					},
+				},
+				{
+					resourceKey: "portfolio/waiting",
+					dataRevision: "0",
+					stateVersion: "waiting",
+					availability: "missing",
+					freshness: "unknown",
+					lastSuccessfulAt: null,
+					sync: { id: "waiting", state: "running", errorCode: null },
+				},
+			],
+		),
+	},
+};