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/stocks/ui/StocksPage/StocksPage.view.tsx

@@ -32,6 +32,16 @@ const StocksPageView: FC<StocksPageViewProps> = (props) => {
 					{t("stock.searchSubtitle")}
 				</Text>
 			</div>
+			<Button
+				onClick={vm.retry}
+				disabled={vm.refreshing || vm.query.trim().length < 2}
+				w="fit-content"
+			>
+				{t("investment.refresh")}
+			</Button>
+			{vm.partial ? (
+				<Alert role="status">{t("investment.partial")}</Alert>
+			) : null}
 			<TextInput
 				label={t("stock.searchLabel")}
 				placeholder={t("stock.searchPlaceholder")}
@@ -44,7 +54,7 @@ const StocksPageView: FC<StocksPageViewProps> = (props) => {
 				<Text c="dimmed">{t("stock.searchHint")}</Text>
 			) : null}
 			{vm.error ? (
-				<Alert role="alert" color="orange">
+				<Alert role="status" aria-live="polite" color="orange">
 					<Stack gap="xs">
 						<Text>
 							{t(
@@ -142,7 +152,9 @@ const StocksPageView: FC<StocksPageViewProps> = (props) => {
 						))}
 					</Stack>
 				) : (
-					<Text c="dimmed">{t("stock.noSearchResults")}</Text>
+					<Text c="dimmed">
+						{t(vm.partial ? "investment.partial" : "stock.noSearchResults")}
+					</Text>
 				)
 			) : null}
 		</Stack>