feat: add operations page

src/test/handlers.ts

@@ -36,4 +36,13 @@ export const handlers = [
 			cashBalances: [],
 		}),
 	),
+	http.get("*/api/v1/brokerage-accounts/:accountId/operations", () =>
+		HttpResponse.json({
+			accountId: "account-1",
+			items: [],
+			nextCursor: null,
+			hasNext: false,
+			observedAt: "2026-08-14T00:00:00Z",
+		}),
+	),
 ];