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/pages/stock/ui/StockPage/StockPage.view.tsx

@@ -63,12 +63,10 @@ const StockPageView: FC<StockPageViewProps> = (props) => {
 					</div>
 					<Button
 						variant="subtle"
-						onClick={() => {
-							vm.stockState.retry();
-							vm.quoteState.retry();
-						}}
+						onClick={vm.refresh}
+						disabled={vm.refreshing}
 					>
-						{t("stock.refreshPrice")}
+						{t("investment.refresh")}
 					</Button>
 				</Group>
 				{vm.company?.description ? (
@@ -76,8 +74,8 @@ const StockPageView: FC<StockPageViewProps> = (props) => {
 						{vm.company.description}
 					</Text>
 				) : null}
-				{vm.stockState.error || vm.quoteState.error ? (
-					<Alert role="alert" color="orange" mt="md">
+				{vm.refreshError || vm.stockState.error || vm.quoteState.error ? (
+					<Alert role="status" aria-live="polite" color="orange" mt="md">
 						{t(vm.quote ? "accounts.refreshError" : "stock.sectionError")}
 					</Alert>
 				) : null}
@@ -164,7 +162,7 @@ const StockPageView: FC<StockPageViewProps> = (props) => {
 					{vm.company ? (
 						<Stack gap="lg">
 							{vm.company.unavailable.length ? (
-								<Alert color="orange">
+								<Alert color="orange" role="status" aria-live="polite">
 									<Group justify="space-between">
 										<Text size="sm">{t("stock.partialCompany")}</Text>
 										<Button