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-event/api/useBrokerageEvents.test.tsx

@@ -3,6 +3,7 @@ import { HttpResponse, http } from "msw";
 import { describe, expect, it, vi } from "vitest";
 import { configureAuthClient } from "@/shared/api";
 import { createQueryWrapper } from "@/test/query";
+import { resource } from "@/test/resource";
 import { server } from "@/test/server";
 import { useBrokerageEvents } from "./useBrokerageEvents";
 
@@ -31,23 +32,25 @@ describe("useBrokerageEvents", () => {
 		});
 		server.use(
 			http.get("*/api/v1/brokerage-accounts/account-1/events", () =>
-				HttpResponse.json({
-					accountId: "account-1",
-					calculatedAt: "2026-08-14T00:00:00Z",
-					events: [
-						{
-							type: "dividend",
-							date: "2026-09-01",
-							dateKind: "registry",
-							figi: "figi-1",
-							instrumentUid: null,
-							ticker: "SBER",
-							displayName: "Сбер",
-							logoName: "sber3.png",
-							projectedAmount: { currency: "RUB", value: "12.34" },
-						},
-					],
-				}),
+				HttpResponse.json(
+					resource({
+						accountId: "account-1",
+						calculatedAt: "2026-08-14T00:00:00Z",
+						events: [
+							{
+								type: "dividend",
+								date: "2026-09-01",
+								dateKind: "registry",
+								figi: "figi-1",
+								instrumentUid: null,
+								ticker: "SBER",
+								displayName: "Сбер",
+								logoName: "sber3.png",
+								projectedAmount: { currency: "RUB", value: "12.34" },
+							},
+						],
+					}),
+				),
 			),
 		);