feat(blocking): account-deleted recovery screen with bot deep-link

Pairs with backend feat(deleted-users) — when the cabinet returns
403 {detail: {code: 'account_deleted', message, bot_username,
telegram_deep_link}} the SPA shows a dedicated screen instead of the
generic auth-error toast.

* Adds AccountDeletedScreen with localized title/description, an
  Open-bot button using the backend-provided telegram_deep_link, and a
  Retry button that clears the block + reloads (so the next request
  observes the now-revived row).
* useBlockingStore gains accountDeleted slice mirroring the existing
  maintenance/channel-subscription/blacklisted slots — consistent with
  the precedent for cross-cutting 403 codes.
* apiClient: AccountDeletedError type + isAccountDeletedError guard +
  response interceptor routes the 403 into the blocking store.
* i18n: ru/en/zh/fa parity for title, description, openBot, retry, hint.

No behavior change for ACTIVE users. BLOCKED users still get the
generic 403 (the backend keeps the message opaque for admin actions).

src/components/blocking/AccountDeletedScreen.tsx

@@ -0,0 +1,86 @@
+import { useTranslation } from 'react-i18next';
+import { useBlockingStore } from '../../store/blocking';
+
+/**
+ * Full-screen block shown when the backend returns
+ * `403 {detail: {code: "account_deleted", ...}}`.
+ *
+ * Triggered for two situations:
+ *   * Token-bearing requests where the user row was flipped to DELETED
+ *     by the inactivity-cleanup job out-of-band.
+ *   * Email/password login of a previously-DELETED account where we
+ *     have no Telegram signature to auto-revive on the server side.
+ *
+ * Recovery: pressing /start in the bot triggers the existing revival
+ * flow (handlers/start.py), which flips status back to ACTIVE. The
+ * "Retry" button reloads the SPA so the next request observes the new
+ * status and clears the block.
+ */
+export default function AccountDeletedScreen() {
+  const { t } = useTranslation();
+  const info = useBlockingStore((state) => state.accountDeletedInfo);
+
+  const deepLink = info?.telegram_deep_link?.trim() || null;
+  const handleOpenBot = () => {
+    if (deepLink) {
+      window.open(deepLink, '_blank', 'noopener,noreferrer');
+    }
+  };
+
+  const handleRetry = () => {
+    // Reload rather than just clearing the store: we want a fresh
+    // network round-trip against the (hopefully now-revived) row.
+    useBlockingStore.getState().clearBlocking();
+    window.location.reload();
+  };
+
+  return (
+    <div className="fixed inset-0 z-[100] flex flex-col items-center justify-center bg-dark-950 p-6">
+      <div className="w-full max-w-md text-center">
+        <div className="mb-8">
+          <div className="mx-auto flex h-24 w-24 items-center justify-center rounded-full bg-dark-800">
+            <svg
+              className="h-12 w-12 text-amber-400"
+              fill="none"
+              viewBox="0 0 24 24"
+              stroke="currentColor"
+              aria-hidden="true"
+            >
+              <path
+                strokeLinecap="round"
+                strokeLinejoin="round"
+                strokeWidth={1.5}
+                d="M12 8v4m0 4h.01M21 12a9 9 0 11-18 0 9 9 0 0118 0z"
+              />
+            </svg>
+          </div>
+        </div>
+
+        <h1 className="mb-4 text-2xl font-bold text-white">{t('blocking.accountDeleted.title')}</h1>
+
+        <p className="mb-6 text-lg text-gray-400">{t('blocking.accountDeleted.description')}</p>
+
+        <div className="space-y-3">
+          {deepLink && (
+            <button
+              type="button"
+              onClick={handleOpenBot}
+              className="block w-full rounded-xl bg-blue-600 px-6 py-3 text-base font-semibold text-white transition-colors hover:bg-blue-500 focus:outline-none focus:ring-2 focus:ring-blue-400 focus:ring-offset-2 focus:ring-offset-dark-950"
+            >
+              {t('blocking.accountDeleted.openBot')}
+            </button>
+          )}
+          <button
+            type="button"
+            onClick={handleRetry}
+            className="block w-full rounded-xl bg-dark-800 px-6 py-3 text-base font-medium text-gray-200 transition-colors hover:bg-dark-700 focus:outline-none focus:ring-2 focus:ring-gray-400 focus:ring-offset-2 focus:ring-offset-dark-950"
+          >
+            {t('blocking.accountDeleted.retry')}
+          </button>
+        </div>
+
+        <p className="mt-8 text-sm text-gray-500">{t('blocking.accountDeleted.hint')}</p>
+      </div>
+    </div>
+  );
+}

src/components/blocking/index.ts

@@ -1,3 +1,4 @@
 export { default as MaintenanceScreen } from './MaintenanceScreen';
 export { default as ChannelSubscriptionScreen } from './ChannelSubscriptionScreen';
 export { default as BlacklistedScreen } from './BlacklistedScreen';
+export { default as AccountDeletedScreen } from './AccountDeletedScreen';