fix(admin): show flag for every country code, not just hardcoded 25-36

User reported the EE (Estonia) flag rendered as plain text 'EE' on the
admin servers page. Root cause: getCountryFlag() in AdminServers.tsx
and AdminServerEdit.tsx hardcoded a 25-entry codeMap that didn't
include EE; falling through to 'return code' produced raw text.

Two other admin pages (AdminRemnawaveSquadDetail, AdminUserDetail)
had bigger 35-entry maps that did include EE — so EE worked there
but MX/AR/EG/ZA and friends still wouldn't. AdminRemnawave repeated
the same 35-entry map. AdminTrafficUsage already had the correct
algorithmic ISO→regional-indicator code but as a local duplicate of
utils/subscriptionHelpers.

Unify all six on the single algorithmic helper:

- getFlagEmoji() in utils/subscriptionHelpers.ts now:
  * accepts string | null | undefined (callers don't need to guard)
  * trims whitespace
  * validates [A-Za-z]{2} before composing regional indicators
- Each admin page now either imports getFlagEmoji directly or wraps
  it with the page's preferred fallback character (e.g. '🌍' for
  empty codes where the UI expects a placeholder).

src/pages/AdminRemnawave.tsx

@@ -12,6 +12,7 @@ import {
 } from '../api/adminRemnawave';
 import { usePlatform } from '../platform/hooks/usePlatform';
 import { formatUptime } from '../utils/format';
+import { getFlagEmoji } from '../utils/subscriptionHelpers';
 import Twemoji from 'react-twemoji';
 import {
   ServerIcon,
@@ -46,48 +47,9 @@ const formatBytes = (bytes: number): string => {
   return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
 };
 
-const getCountryFlag = (code: string | null | undefined): string => {
-  if (!code) return '🌍';
-  const codeMap: Record<string, string> = {
-    RU: '🇷🇺',
-    US: '🇺🇸',
-    DE: '🇩🇪',
-    NL: '🇳🇱',
-    GB: '🇬🇧',
-    UK: '🇬🇧',
-    FR: '🇫🇷',
-    FI: '🇫🇮',
-    SE: '🇸🇪',
-    NO: '🇳🇴',
-    PL: '🇵🇱',
-    TR: '🇹🇷',
-    JP: '🇯🇵',
-    SG: '🇸🇬',
-    HK: '🇭🇰',
-    KR: '🇰🇷',
-    AU: '🇦🇺',
-    CA: '🇨🇦',
-    CH: '🇨🇭',
-    AT: '🇦🇹',
-    IT: '🇮🇹',
-    ES: '🇪🇸',
-    BR: '🇧🇷',
-    IN: '🇮🇳',
-    AE: '🇦🇪',
-    IL: '🇮🇱',
-    KZ: '🇰🇿',
-    UA: '🇺🇦',
-    CZ: '🇨🇿',
-    RO: '🇷🇴',
-    LV: '🇱🇻',
-    LT: '🇱🇹',
-    EE: '🇪🇪',
-    BG: '🇧🇬',
-    HU: '🇭🇺',
-    MD: '🇲🇩',
-  };
-  return codeMap[code.toUpperCase()] || code;
-};
+// Алгоритмический ISO 3166-1 alpha-2 → regional indicator. Глобус-fallback
+// сохранён для случая пустого кода (важно для UI-плейсхолдеров).
+const getCountryFlag = (code: string | null | undefined): string => getFlagEmoji(code) || '🌍';
 
 interface StatCardProps {
   label: string;

src/pages/AdminRemnawaveSquadDetail.tsx

@@ -5,49 +5,12 @@ import { adminRemnawaveApi, SquadWithLocalInfo } from '../api/adminRemnawave';
 import { AdminBackButton } from '../components/admin';
 import { ServerIcon, UsersIcon, CheckIcon, XIcon } from '../components/icons';
 import Twemoji from 'react-twemoji';
-// Country flags helper
-const getCountryFlag = (code: string | null | undefined): string => {
-  if (!code) return '🌍';
-  const codeMap: Record<string, string> = {
-    RU: '🇷🇺',
-    US: '🇺🇸',
-    DE: '🇩🇪',
-    NL: '🇳🇱',
-    GB: '🇬🇧',
-    UK: '🇬🇧',
-    FR: '🇫🇷',
-    FI: '🇫🇮',
-    SE: '🇸🇪',
-    NO: '🇳🇴',
-    PL: '🇵🇱',
-    TR: '🇹🇷',
-    JP: '🇯🇵',
-    SG: '🇸🇬',
-    HK: '🇭🇰',
-    KR: '🇰🇷',
-    AU: '🇦🇺',
-    CA: '🇨🇦',
-    CH: '🇨🇭',
-    AT: '🇦🇹',
-    IT: '🇮🇹',
-    ES: '🇪🇸',
-    BR: '🇧🇷',
-    IN: '🇮🇳',
-    AE: '🇦🇪',
-    IL: '🇮🇱',
-    KZ: '🇰🇿',
-    UA: '🇺🇦',
-    CZ: '🇨🇿',
-    RO: '🇷🇴',
-    LV: '🇱🇻',
-    LT: '🇱🇹',
-    EE: '🇪🇪',
-    BG: '🇧🇬',
-    HU: '🇭🇺',
-    MD: '🇲🇩',
-  };
-  return codeMap[code.toUpperCase()] || code;
-};
+import { getFlagEmoji } from '../utils/subscriptionHelpers';
+
+// Country flag helper. Алгоритмический ISO 3166-1 alpha-2 → regional indicator,
+// чтобы не плодить хардкод-словари (исторически у каждого экрана был свой
+// неполный, и EE/MX/AR не покрывались). При отсутствии кода — глобус.
+const getCountryFlag = (code: string | null | undefined): string => getFlagEmoji(code) || '🌍';
 
 export default function AdminRemnawaveSquadDetail() {
   const { t } = useTranslation();

src/pages/AdminServerEdit.tsx

@@ -7,39 +7,7 @@ import { AdminBackButton } from '../components/admin';
 import { ServerIcon } from '../components/icons';
 import { createNumberInputHandler, toNumber } from '../utils/inputHelpers';
 import Twemoji from 'react-twemoji';
-
-// Country flags (simple emoji mapping)
-const getCountryFlag = (code: string | null): string => {
-  if (!code) return '';
-  const codeMap: Record<string, string> = {
-    RU: '🇷🇺',
-    US: '🇺🇸',
-    DE: '🇩🇪',
-    NL: '🇳🇱',
-    GB: '🇬🇧',
-    FR: '🇫🇷',
-    FI: '🇫🇮',
-    SE: '🇸🇪',
-    PL: '🇵🇱',
-    CZ: '🇨🇿',
-    AT: '🇦🇹',
-    CH: '🇨🇭',
-    UA: '🇺🇦',
-    KZ: '🇰🇿',
-    JP: '🇯🇵',
-    KR: '🇰🇷',
-    SG: '🇸🇬',
-    HK: '🇭🇰',
-    CA: '🇨🇦',
-    AU: '🇦🇺',
-    BR: '🇧🇷',
-    IN: '🇮🇳',
-    TR: '🇹🇷',
-    IL: '🇮🇱',
-    AE: '🇦🇪',
-  };
-  return codeMap[code.toUpperCase()] || code;
-};
+import { getFlagEmoji as getCountryFlag } from '../utils/subscriptionHelpers';
 
 export default function AdminServerEdit() {
   const { t } = useTranslation();

src/pages/AdminServers.tsx

@@ -20,37 +20,7 @@ const BackIcon = () => (
 );
 
 // Country flags (simple emoji mapping)
-const getCountryFlag = (code: string | null): string => {
-  if (!code) return '';
-  const codeMap: Record<string, string> = {
-    RU: '🇷🇺',
-    US: '🇺🇸',
-    DE: '🇩🇪',
-    NL: '🇳🇱',
-    GB: '🇬🇧',
-    FR: '🇫🇷',
-    FI: '🇫🇮',
-    SE: '🇸🇪',
-    PL: '🇵🇱',
-    CZ: '🇨🇿',
-    AT: '🇦🇹',
-    CH: '🇨🇭',
-    UA: '🇺🇦',
-    KZ: '🇰🇿',
-    JP: '🇯🇵',
-    KR: '🇰🇷',
-    SG: '🇸🇬',
-    HK: '🇭🇰',
-    CA: '🇨🇦',
-    AU: '🇦🇺',
-    BR: '🇧🇷',
-    IN: '🇮🇳',
-    TR: '🇹🇷',
-    IL: '🇮🇱',
-    AE: '🇦🇪',
-  };
-  return codeMap[code.toUpperCase()] || code;
-};
+import { getFlagEmoji as getCountryFlag } from '../utils/subscriptionHelpers';
 
 export default function AdminServers() {
   const { t } = useTranslation();

src/pages/AdminTrafficUsage.tsx

@@ -18,6 +18,7 @@ import {
   type TrafficEnrichmentData,
 } from '../api/adminTraffic';
 import { usePlatform } from '../platform/hooks/usePlatform';
+import { getFlagEmoji as _sharedGetFlagEmoji } from '../utils/subscriptionHelpers';
 
 // ============ TanStack Table module augmentation ============
 
@@ -40,14 +41,9 @@ const formatBytes = (bytes: number): string => {
   return parseFloat((bytes / Math.pow(k, i)).toFixed(2)) + ' ' + sizes[i];
 };
 
-const getFlagEmoji = (countryCode: string): string => {
-  if (!countryCode || countryCode.length !== 2) return '';
-  const codePoints = countryCode
-    .toUpperCase()
-    .split('')
-    .map((char) => 127397 + char.charCodeAt(0));
-  return String.fromCodePoint(...codePoints);
-};
+// Локальная обёртка над общим helper'ом, чтобы внутренние сигнатуры (string)
+// оставались как были и call-sites не меняли.
+const getFlagEmoji = (countryCode: string): string => _sharedGetFlagEmoji(countryCode);
 
 const formatCurrency = (kopeks: number): string => {
   const rubles = kopeks / 100;

src/pages/AdminUserDetail.tsx

@@ -24,51 +24,14 @@ import { createNumberInputHandler, toNumber } from '../utils/inputHelpers';
 import { usePermissionStore } from '../store/permissions';
 import { MessageMediaGrid } from '../components/tickets/MessageMediaGrid';
 import { linkifyText } from '../utils/linkify';
+import { getFlagEmoji } from '../utils/subscriptionHelpers';
 
 // ============ Helpers ============
 
-const getCountryFlag = (code: string | null | undefined): string => {
-  if (!code) return '';
-  const codeMap: Record<string, string> = {
-    RU: '\u{1F1F7}\u{1F1FA}',
-    US: '\u{1F1FA}\u{1F1F8}',
-    DE: '\u{1F1E9}\u{1F1EA}',
-    NL: '\u{1F1F3}\u{1F1F1}',
-    GB: '\u{1F1EC}\u{1F1E7}',
-    UK: '\u{1F1EC}\u{1F1E7}',
-    FR: '\u{1F1EB}\u{1F1F7}',
-    FI: '\u{1F1EB}\u{1F1EE}',
-    SE: '\u{1F1F8}\u{1F1EA}',
-    NO: '\u{1F1F3}\u{1F1F4}',
-    PL: '\u{1F1F5}\u{1F1F1}',
-    TR: '\u{1F1F9}\u{1F1F7}',
-    JP: '\u{1F1EF}\u{1F1F5}',
-    SG: '\u{1F1F8}\u{1F1EC}',
-    HK: '\u{1F1ED}\u{1F1F0}',
-    KR: '\u{1F1F0}\u{1F1F7}',
-    AU: '\u{1F1E6}\u{1F1FA}',
-    CA: '\u{1F1E8}\u{1F1E6}',
-    CH: '\u{1F1E8}\u{1F1ED}',
-    AT: '\u{1F1E6}\u{1F1F9}',
-    IT: '\u{1F1EE}\u{1F1F9}',
-    ES: '\u{1F1EA}\u{1F1F8}',
-    BR: '\u{1F1E7}\u{1F1F7}',
-    IN: '\u{1F1EE}\u{1F1F3}',
-    AE: '\u{1F1E6}\u{1F1EA}',
-    IL: '\u{1F1EE}\u{1F1F1}',
-    KZ: '\u{1F1F0}\u{1F1FF}',
-    UA: '\u{1F1FA}\u{1F1E6}',
-    CZ: '\u{1F1E8}\u{1F1FF}',
-    RO: '\u{1F1F7}\u{1F1F4}',
-    LV: '\u{1F1F1}\u{1F1FB}',
-    LT: '\u{1F1F1}\u{1F1F9}',
-    EE: '\u{1F1EA}\u{1F1EA}',
-    BG: '\u{1F1E7}\u{1F1EC}',
-    HU: '\u{1F1ED}\u{1F1FA}',
-    MD: '\u{1F1F2}\u{1F1E9}',
-  };
-  return codeMap[code.toUpperCase()] || code;
-};
+// Алгоритмический ISO 3166-1 alpha-2 → regional indicator (вместо хардкод-словаря,
+// который не покрывал все страны: например, EE раньше плыл сырым текстом в одних
+// местах, MX/AR/EG до сих пор отсутствуют в других). Единая точка истины в utils.
+const getCountryFlag = (code: string | null | undefined): string => getFlagEmoji(code);
 
 // ============ Icons ============
 

src/utils/subscriptionHelpers.ts

@@ -32,9 +32,12 @@ export const getInsufficientBalanceError = (
   return null;
 };
 
-export const getFlagEmoji = (countryCode: string): string => {
-  if (!countryCode || countryCode.length !== 2) return '';
-  const codePoints = countryCode
+export const getFlagEmoji = (countryCode: string | null | undefined): string => {
+  // Trim + длина строго 2 буквы — иначе Unicode regional indicators не дадут флаг.
+  // Принимаем null/undefined чтобы вызывающие коду не приходилось страховаться.
+  const code = (countryCode ?? '').trim();
+  if (code.length !== 2 || !/^[A-Za-z]{2}$/.test(code)) return '';
+  const codePoints = code
     .toUpperCase()
     .split('')
     .map((char) => 127397 + char.charCodeAt(0));