fix: resolve telegram auth token expiration and clean up codebase

- Fix stale initData comparison in clearStaleSessionIfNeeded that destroyed
  valid refresh tokens on mobile WebView reopens
- Restrict X-Telegram-Init-Data header to auth endpoints only
- Close Mini App on auth retry to force fresh initData from Telegram
- Merge Connection page error/not-configured states for better UX
- Remove unnecessary comments across 40+ files (section dividers,
  restating comments, noise catch block comments)
- Configure ESLint allowEmptyCatch to properly handle intentional
  empty catch blocks (62 warnings resolved)

src/pages/AdminUsers.tsx

@@ -5,8 +5,6 @@ import { useCurrency } from '../hooks/useCurrency';
 import { adminUsersApi, type UserListItem, type UsersStatsResponse } from '../api/adminUsers';
 import { usePlatform } from '../platform/hooks/usePlatform';
 
-// ============ Icons ============
-
 const BackIcon = () => (
   <svg
     className="h-5 w-5 text-dark-400"
@@ -57,8 +55,6 @@ const TelegramIcon = () => (
   </svg>
 );
 
-// ============ Components ============
-
 interface StatCardProps {
   title: string;
   value: string | number;
@@ -101,8 +97,6 @@ function StatusBadge({ status }: { status: string }) {
   );
 }
 
-// ============ User List Component ============
-
 interface UserRowProps {
   user: UserListItem;
   onClick: () => void;
@@ -181,8 +175,6 @@ function UserRow({ user, onClick, formatAmount }: UserRowProps) {
   );
 }
 
-// ============ Main Page ============
-
 export default function AdminUsers() {
   const { t } = useTranslation();
   const { formatWithCurrency } = useCurrency();