clean: remove catalog tab, keeping 2 pure tabs (Oracle and History)

lib/main.dart

@@ -1,6 +1,5 @@
 import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
-import 'screens/catalog_screen.dart';
 import 'screens/history_screen.dart';
 import 'screens/home_search_screen.dart';
 import 'services/words_repository.dart';
@@ -57,19 +56,19 @@ class _Words999AppState extends State<Words999App> {
           ),
         ),
         navigationBarTheme: NavigationBarThemeData(
-          backgroundColor: const Color(0xFF101322),
+          backgroundColor: const Color(0xFF101222),
           indicatorColor: const Color(0xFF2A2D4A),
           labelTextStyle: WidgetStateProperty.resolveWith((states) {
             if (states.contains(WidgetState.selected)) {
               return const TextStyle(
-                color: Color(0xFFFFD54F),
+                color: Color(0xFFFFF9C4),
                 fontWeight: FontWeight.bold,
                 fontSize: 12,
               );
             }
             return const TextStyle(
-              color: Color(0xFF9FA8DA),
-              fontSize: 11,
+              color: Color(0xFF8C93B8),
+              fontSize: 12,
             );
           }),
         ),
@@ -91,7 +90,6 @@ class _MainNavigationContainerState extends State<MainNavigationContainer> {
 
   final List<Widget> _screens = const [
     HomeSearchScreen(),
-    CatalogScreen(),
     HistoryScreen(),
   ];
 
@@ -114,11 +112,6 @@ class _MainNavigationContainerState extends State<MainNavigationContainer> {
             selectedIcon: GradientStar(size: 22),
             label: 'Оракул',
           ),
-          NavigationDestination(
-            icon: Icon(Icons.menu_book_outlined),
-            selectedIcon: GradientStar(size: 22),
-            label: 'Каталог 999',
-          ),
           NavigationDestination(
             icon: Icon(Icons.history_rounded),
             selectedIcon: GradientStar(size: 22),