fix(auth,bank): guard switch-auth nav and surface banking retry

AuthForm disables the switch-auth Link while submit is pending so pointer
click and Enter can no longer leave the auth route and lose the draft/error
context. The form restores a true Link after the request settles.

CardsPage/CardPage distinguish cold vs cached banking failures:
- cold card/section errors expose accessible alert + retry
- cached failures keep the previous data and offer a section GET retry
- summary-only/history-only outages do not hide successful sections
- notFound still skips the retry CTA

Tests cover the pending link guard, cold/cached cards error with retry,
summary failure with retry, and the prerequisite card list recovery.

Closes #56, #57

src/pages/cards/ui/CardsPage/CardsPage.view.tsx

@@ -18,6 +18,7 @@ import { Link } from "react-router";
 
 import {
 	BankCardFace,
+	BankFeedback,
 	BankPeriodPicker,
 	BankSummaryView,
 } from "@/entities/bank-card";
@@ -51,15 +52,17 @@ const CardsPageViewCards: FC<CardsPageViewProps> = (props) => {
 			);
 		}
 
-		const text = t(vm.archive ? "bank.emptyHint" : "bank.noActive");
+		if (!vm.cards.error) {
+			const text = t(vm.archive ? "bank.emptyHint" : "bank.noActive");
 
-		return (
-			<StateView
-				action={<Button onClick={vm.onAddCard}>{t("bank.addCard")}</Button>}
-				text={text}
-				title={t("bank.empty")}
-			/>
-		);
+			return (
+				<StateView
+					action={<Button onClick={vm.onAddCard}>{t("bank.addCard")}</Button>}
+					text={text}
+					title={t("bank.empty")}
+				/>
+			);
+		}
 	}
 
 	if (vm.cards.isLoading) {
@@ -103,6 +106,15 @@ const CardsPageView: FC<CardsPageViewProps> = (props) => {
 				onChange={vm.onArchiveChange}
 			/>
 
+			{vm.cards.error && (
+				<BankFeedback
+					cached={Boolean(vm.cards.data)}
+					error={vm.cards.error}
+					loadingError={!vm.cards.data}
+					retry={vm.retryCards}
+				/>
+			)}
+
 			<CardsPageViewCards {...props} />
 
 			<Group align="flex-end" justify="space-between">
@@ -123,9 +135,10 @@ const CardsPageView: FC<CardsPageViewProps> = (props) => {
 			<BankSummaryView
 				all
 				data={vm.summary.data}
-				error={vm.summary.isError}
+				error={vm.summary.error}
 				fetching={vm.summary.isFetching}
 				loading={vm.summary.isLoading}
+				retry={vm.retrySummary}
 			/>
 		</Stack>
 	);