perf: add Zustand selectors to prevent cascading re-renders

Replace all bare useAuthStore(), useBlockingStore(), and
useSuccessNotification() calls with individual field selectors.
This prevents components from re-rendering when unrelated store
fields change.

- 21 useAuthStore usages across 20 files: individual selectors
  for 1-2 fields, useShallow for 3+ fields
- 5 useBlockingStore usages: individual selectors
- 2 useSuccessNotification usages: individual selectors

src/components/SuccessNotificationModal.tsx

@@ -78,7 +78,9 @@ const CloseIcon = () => (
 export default function SuccessNotificationModal() {
   const { t } = useTranslation();
   const navigate = useNavigate();
-  const { isOpen, data, hide } = useSuccessNotification();
+  const isOpen = useSuccessNotification((state) => state.isOpen);
+  const data = useSuccessNotification((state) => state.data);
+  const hide = useSuccessNotification((state) => state.hide);
   const { formatAmount, currencySymbol } = useCurrency();
   const { safeAreaInset, contentSafeAreaInset, isTelegramWebApp } = useTelegramSDK();
   const haptic = useHaptic();