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/components/PromoOffersSection.tsx

@@ -80,8 +80,6 @@ const XCircleIcon = () => (
   </svg>
 );
 
-// ------- Main Component -------
-
 interface PromoOffersSectionProps {
   className?: string;
 }

src/components/SuccessNotificationModal.tsx

@@ -108,7 +108,6 @@ export default function SuccessNotificationModal() {
     return () => document.removeEventListener('keydown', handleKeyDown);
   }, [isOpen, handleClose]);
 
-  // Haptic feedback on open
   useEffect(() => {
     if (isOpen) {
       haptic.notification('success');

src/components/admin/MenuEditorTab.tsx

@@ -30,8 +30,6 @@ import {
 import { Toggle } from './Toggle';
 import { useNotify } from '../../platform/hooks/useNotify';
 
-// ============ Icons ============
-
 const GripIcon = () => (
   <svg className="h-5 w-5" fill="none" viewBox="0 0 24 24" stroke="currentColor" strokeWidth={2}>
     <path
@@ -110,8 +108,6 @@ const ArrowDownIcon = () => (
   </svg>
 );
 
-// ============ Helpers ============
-
 function generateId(): string {
   return `custom_${Date.now().toString(36)}_${Math.random().toString(36).slice(2, 6)}`;
 }
@@ -126,8 +122,6 @@ function configsEqual(a: MenuConfig, b: MenuConfig): boolean {
 
 const DEFAULT_CONFIG: MenuConfig = { rows: [] };
 
-// ============ MaxPerRowSelector ============
-
 interface MaxPerRowSelectorProps {
   value: number;
   onChange: (value: number) => void;
@@ -153,8 +147,6 @@ function MaxPerRowSelector({ value, onChange }: MaxPerRowSelectorProps) {
   );
 }
 
-// ============ ButtonChip ============
-
 interface ButtonChipProps {
   button: MenuButtonConfig;
   isExpanded: boolean;
@@ -358,8 +350,6 @@ function ButtonChip({
   );
 }
 
-// ============ SortableRow ============
-
 interface SortableRowProps {
   row: MenuRowConfig;
   rowIndex: number;
@@ -471,8 +461,6 @@ function SortableRow({
   );
 }
 
-// ============ InlineAddPanel ============
-
 interface InlineAddPanelProps {
   rowId: string;
   usedBuiltinIds: Set<string>;
@@ -540,8 +528,6 @@ function InlineAddPanel({ rowId, usedBuiltinIds, onAddBuiltin, onAddCustom }: In
   );
 }
 
-// ============ MenuEditorTab ============
-
 export function MenuEditorTab() {
   const { t } = useTranslation();
   const queryClient = useQueryClient();

src/components/backgrounds/BackgroundRenderer.tsx

@@ -66,9 +66,7 @@ if (cachedConfig?.enabled && cachedConfig.type && cachedConfig.type !== 'none')
 function setCachedConfig(config: AnimationConfig) {
   try {
     localStorage.setItem(ANIMATION_CACHE_KEY, JSON.stringify(config));
-  } catch {
-    // localStorage not available
-  }
+  } catch {}
 }
 
 export function setCachedAnimationConfig(config: AnimationConfig) {

src/components/connection/InstallationGuide.tsx

@@ -62,8 +62,6 @@ export default function InstallationGuide({
   const [activePlatformKey, setActivePlatformKey] = useState<string | null>(null);
   const [selectedApp, setSelectedApp] = useState<RemnawaveAppClient | null>(null);
 
-  // --- Helpers ---
-
   const getLocalizedText = useCallback(
     (text: LocalizedText | undefined): string => {
       if (!text) return '';
@@ -96,8 +94,6 @@ export default function InstallationGuide({
     [appConfig.svgLibrary],
   );
 
-  // --- Available platforms ---
-
   const availablePlatforms = useMemo(() => {
     if (!appConfig.platforms) return [];
     const available = platformOrder.filter((key) => {
@@ -110,8 +106,6 @@ export default function InstallationGuide({
     return available;
   }, [appConfig.platforms, detectedPlatform]);
 
-  // --- Auto-select platform & app ---
-
   useEffect(() => {
     if (selectedApp || !availablePlatforms.length) return;
     const platform = availablePlatforms[0];
@@ -124,8 +118,6 @@ export default function InstallationGuide({
     }
   }, [appConfig.platforms, availablePlatforms, selectedApp]);
 
-  // --- Button renderer (delegates to BlockButtons component) ---
-
   const renderBlockButtons = useCallback(
     (buttons: RemnawaveButtonClient[] | undefined, variant: 'light' | 'subtle') => (
       <BlockButtons
@@ -153,8 +145,6 @@ export default function InstallationGuide({
     ],
   );
 
-  // --- Current platform data ---
-
   const currentPlatformKey = activePlatformKey || availablePlatforms[0];
   const currentPlatformData = currentPlatformKey
     ? (appConfig.platforms[currentPlatformKey] as RemnawavePlatformData | undefined)