diff --git a/lib/backend/api.dart b/lib/backend/api.dart
index 72f987c..6a84839 100644
--- a/lib/backend/api.dart
+++ b/lib/backend/api.dart
@@ -14,7 +14,6 @@ import '../core/utils/logger.dart';
 import 'package:device_info_plus/device_info_plus.dart';
 import 'dart:io';
 import 'package:timezone/data/latest_all.dart' as tz;
-import 'package:timezone/timezone.dart' as tz;
 import 'package:flutter_timezone/flutter_timezone.dart';
 
 enum SessionState { disconnected, connecting, connected, online }
@@ -279,7 +278,7 @@ class Api {
 
     final delaySec = (2 * (1 << _reconnectAttempts)).clamp(2, 30);
     _reconnectAttempts++;
-    logger.i('Реконнект через ${delaySec}с (попытка $_reconnectAttempts)');
+    logger.i('Реконнект через $delaySecс (попытка $_reconnectAttempts)');
 
     _reconnectTimer?.cancel();
     _reconnectTimer = Timer(Duration(seconds: delaySec), connect);
diff --git a/lib/backend/modules/calls.dart b/lib/backend/modules/calls.dart
index 2182af0..4593e48 100644
--- a/lib/backend/modules/calls.dart
+++ b/lib/backend/modules/calls.dart
@@ -1,5 +1,4 @@
 // Backend module for parsing calls from Komet platform
-import '../../core/storage/app_database.dart';
 import 'contacts.dart';
 import '../api.dart';
 import '../../core/protocol/opcode_map.dart';
@@ -57,10 +56,6 @@ class CallsModule {
     final recentContacts = await ContactsModule.getContacts(accountId);
     final contactsMap = {for (final c in recentContacts) c.id: c};
 
-    print('DEBUG: Loaded ${recentContacts.length} contacts');
-    print('DEBUG: Contact IDs: ${contactsMap.keys.toList()}');
-    print('DEBUG: Current user ID: $currentUserId');
-
     final List<CallLogEntry> extractedCalls = [];
 
     for (final item in history.whereType<Map>()) {
@@ -90,13 +85,7 @@ class CallsModule {
         peerId = senderId;
       }
 
-      print(
-        'DEBUG: Call - isOutgoing: $isOutgoing, peerId: $peerId, senderId: $senderId',
-      );
       final contact = contactsMap[peerId];
-      print(
-        'DEBUG: Contact found: ${contact != null}, firstName: "${contact?.firstName}", lastName: "${contact?.lastName}"',
-      );
       final status = _parseCallStatus(callAttach, isOutgoing);
       final time = (msg['time'] as int?) ?? 0;
       final msgId =
@@ -107,8 +96,6 @@ class CallsModule {
           ? '${contact!.firstName} ${contact.lastName ?? ''}'.trim()
           : 'Неизвестный';
 
-      print('DEBUG: Creating CallLogEntry with name: "$name"');
-
       extractedCalls.add(
         CallLogEntry(
           id: msgId,
@@ -139,8 +126,9 @@ class CallsModule {
       if (hangupType == 'CANCELED' ||
           hangupType == 'REJECTED' ||
           hangupType == 'MISSED' ||
-          duration == 0)
+          duration == 0) {
         return CallStatus.missed;
+      }
       return CallStatus.incoming;
     }
   }
diff --git a/lib/core/protocol/opcode_map.dart b/lib/core/protocol/opcode_map.dart
index 75cc983..edc40e5 100644
--- a/lib/core/protocol/opcode_map.dart
+++ b/lib/core/protocol/opcode_map.dart
@@ -2,7 +2,7 @@
 ///
 /// Naming follows the server-side convention.
 /// Use [Opcode.name] to get a human-readable label for logging.
-/// 
+///
 /// файл писла нейронка (я че ебанутый чтоль чтобы вручную хуярить опкоды и их значения)
 abstract class Opcode {
   // ── Session ────────────────────────────────────────────────────────
@@ -124,7 +124,7 @@ abstract class Opcode {
   // ── Sessions ───────────────────────────────────────────────────────
   static const int sessionsInfo = 96; // Запрос активных сессий
   static const int sessionsClose = 97; // Закрытие всех сессий
-  static const int phoneBind_request = 98; // Запрос привязки телефона
+  static const int phoneBindRequest = 98; // Запрос привязки телефона
   static const int phoneBindConfirm = 99; // Подтверждение привязки телефона
 
   // ── Bots ───────────────────────────────────────────────────────────
@@ -297,7 +297,7 @@ abstract class Opcode {
     audioPlay: 'AUDIO_PLAY',
     sessionsInfo: 'SESSIONS_INFO',
     sessionsClose: 'SESSIONS_CLOSE',
-    phoneBind_request: 'PHONE_BIND_REQUEST',
+    phoneBindRequest: 'PHONE_BIND_REQUEST',
     phoneBindConfirm: 'PHONE_BIND_CONFIRM',
     chatComplain: 'CHAT_COMPLAIN',
     msgSendCallback: 'MSG_SEND_CALLBACK',
diff --git a/lib/core/protocol/packet.dart b/lib/core/protocol/packet.dart
index 8bd0bc4..7a0a320 100644
--- a/lib/core/protocol/packet.dart
+++ b/lib/core/protocol/packet.dart
@@ -137,9 +137,7 @@ Future<Packet> unpackPacket(Uint8List packet) async {
               _maxDecompressedSize,
             );
           } catch (e) {
-            // В изоляте нельзя использовать логгер, который пишет в терминал через зависимости Flutter,
-            // но простой print или throw сработает
-            print("LZ4 decompression error: $e");
+            throw Exception("LZ4 decompression error: $e");
           }
         }
       }
@@ -148,7 +146,7 @@ Future<Packet> unpackPacket(Uint8List packet) async {
         payload = msgpack.deserialize(payloadBytes);
       } catch (e) {
         if (payloadBytes.isNotEmpty) {
-          print("MsgPack deserialization error: $e");
+          throw Exception("MsgPack deserialization error: $e");
         }
       }
     }
diff --git a/lib/core/storage/app_database.dart b/lib/core/storage/app_database.dart
index 97b80a9..ccd6191 100644
--- a/lib/core/storage/app_database.dart
+++ b/lib/core/storage/app_database.dart
@@ -1,7 +1,6 @@
 import 'dart:io';
 
 import 'package:path/path.dart';
-import 'package:sqflite/sqflite.dart';
 import 'package:sqflite_common_ffi/sqflite_ffi.dart';
 
 class ProfileData {
diff --git a/lib/frontend/screens/calls/calls_tab.dart b/lib/frontend/screens/calls/calls_tab.dart
index 241bc6a..09edce7 100644
--- a/lib/frontend/screens/calls/calls_tab.dart
+++ b/lib/frontend/screens/calls/calls_tab.dart
@@ -32,12 +32,6 @@ class _CallsTabState extends State<CallsTab> {
     final callsModule = CallsModule(api);
     final calls = await callsModule.fetchHistory(p.id, p.id);
 
-    print('DEBUG UI: Received ${calls.length} calls');
-    for (final call in calls.take(3)) {
-      print('DEBUG UI: Call name="${call.name}", peerId=${call.peerId}');
-    }
-
-    // Группируем подряд идущие звонки одному и тому же абоненту в один день с одним и тем же статусом
     final List<CallLogEntry> grouped = [];
     for (final call in calls) {
       if (grouped.isNotEmpty &&
@@ -169,7 +163,7 @@ class _CallsTabState extends State<CallsTab> {
                       ? Image.network(
                           call.avatarUrl!,
                           fit: BoxFit.cover,
-                          errorBuilder: (context, _, ___) =>
+                          errorBuilder: (context, error, stackTrace) =>
                               _buildPlaceholderAvatar(cs, call.name),
                         )
                       : _buildPlaceholderAvatar(cs, call.name),
diff --git a/lib/frontend/screens/chats/chat_list_screen.dart b/lib/frontend/screens/chats/chat_list_screen.dart
index 321f739..1db8a08 100644
--- a/lib/frontend/screens/chats/chat_list_screen.dart
+++ b/lib/frontend/screens/chats/chat_list_screen.dart
@@ -4,7 +4,6 @@ import 'package:material_symbols_icons/symbols.dart';
 import 'dart:math';
 import 'dart:ui' as ui;
 import 'package:flutter/gestures.dart';
-import 'package:flutter/rendering.dart';
 import 'chat_screen.dart';
 
 import '../calls/calls_tab.dart';
@@ -25,8 +24,8 @@ class _StoriesScrollPhysics extends BouncingScrollPhysics {
   const _StoriesScrollPhysics({
     required this.blockPositive,
     required this.allowPullOverscrollTop,
-    ScrollPhysics? parent,
-  }) : super(parent: parent);
+    super.parent,
+  });
 
   @override
   _StoriesScrollPhysics applyTo(ScrollPhysics? ancestor) {
@@ -382,10 +381,10 @@ class _ChatListScreenState extends State<ChatListScreen>
       return _folderChatScrollControllers.first;
     }
     final p = _folderPageController.page;
-    final i = (p != null
-            ? p.round()
-            : _selectedFolderIndex)
-        .clamp(0, _folderChatScrollControllers.length - 1);
+    final i = (p != null ? p.round() : _selectedFolderIndex).clamp(
+      0,
+      _folderChatScrollControllers.length - 1,
+    );
     return _folderChatScrollControllers[i];
   }
 
@@ -795,10 +794,10 @@ class _ChatListScreenState extends State<ChatListScreen>
                                 vertical: 8,
                               ),
                               decoration: BoxDecoration(
-                                color: cs.errorContainer.withOpacity(0.3),
+                                color: cs.errorContainer.withValues(alpha: 0.3),
                                 borderRadius: BorderRadius.circular(12),
                                 border: Border.all(
-                                  color: cs.error.withOpacity(0.2),
+                                  color: cs.error.withValues(alpha: 0.2),
                                 ),
                               ),
                               child: Row(
@@ -933,27 +932,24 @@ class _ChatListScreenState extends State<ChatListScreen>
         ),
         slivers: [
           SliverList(
-            delegate: SliverChildBuilderDelegate(
-              (context, index) {
-                if (_isInitialLoading) {
-                  return _buildChatShimmer();
-                }
-                final chat = chats[index];
-                return _buildChatItem(
-                  chat.id.toString(),
-                  chat.title ?? 'Чат',
-                  chat.lastMsgText ?? '',
-                  _formatTime(chat.lastMsgTime),
-                  (chat.iconUrl != null && chat.iconUrl!.isNotEmpty)
-                      ? chat.iconUrl!
-                      : '',
-                  isOnline: chat.isOnline,
-                  unreadCount: chat.unreadCount,
-                  isMuted: chat.dontDisturbUntil > 0,
-                );
-              },
-              childCount: _isInitialLoading ? 10 : chats.length,
-            ),
+            delegate: SliverChildBuilderDelegate((context, index) {
+              if (_isInitialLoading) {
+                return _buildChatShimmer();
+              }
+              final chat = chats[index];
+              return _buildChatItem(
+                chat.id.toString(),
+                chat.title ?? 'Чат',
+                chat.lastMsgText ?? '',
+                _formatTime(chat.lastMsgTime),
+                (chat.iconUrl != null && chat.iconUrl!.isNotEmpty)
+                    ? chat.iconUrl!
+                    : '',
+                isOnline: chat.isOnline,
+                unreadCount: chat.unreadCount,
+                isMuted: chat.dontDisturbUntil > 0,
+              );
+            }, childCount: _isInitialLoading ? 10 : chats.length),
           ),
           SliverPadding(
             padding: EdgeInsets.only(
@@ -1371,7 +1367,7 @@ class _ChatListScreenState extends State<ChatListScreen>
                       color: cs.surface,
                       boxShadow: [
                         BoxShadow(
-                          color: Colors.black.withOpacity(0.1),
+                          color: Colors.black.withValues(alpha: 0.1),
                           blurRadius: 10,
                           offset: const Offset(0, 2),
                         ),
@@ -1575,7 +1571,9 @@ class _ChatListScreenState extends State<ChatListScreen>
       onLongPress: () => _toggleSelection(id),
       child: AnimatedContainer(
         duration: const Duration(milliseconds: 200),
-        color: isSelected ? cs.primary.withOpacity(0.08) : Colors.transparent,
+        color: isSelected
+            ? cs.primary.withValues(alpha: 0.08)
+            : Colors.transparent,
         child: Padding(
           padding: const EdgeInsets.symmetric(horizontal: 16, vertical: 6),
           child: Row(
diff --git a/lib/frontend/screens/contacts/contacts_tab.dart b/lib/frontend/screens/contacts/contacts_tab.dart
index fffa416..3d86580 100644
--- a/lib/frontend/screens/contacts/contacts_tab.dart
+++ b/lib/frontend/screens/contacts/contacts_tab.dart
@@ -87,7 +87,7 @@ class _ContactsTabState extends State<ContactsTab> {
                       ? Image.network(
                           contact.baseUrl!,
                           fit: BoxFit.cover,
-                          errorBuilder: (context, _, ___) =>
+                          errorBuilder: (context, error, stackTrace) =>
                               _buildPlaceholderAvatar(cs, nameToDisplay),
                         )
                       : _buildPlaceholderAvatar(cs, nameToDisplay),
diff --git a/lib/frontend/screens/profile/settings_tab.dart b/lib/frontend/screens/profile/settings_tab.dart
index 1f6a0ba..6efef04 100644
--- a/lib/frontend/screens/profile/settings_tab.dart
+++ b/lib/frontend/screens/profile/settings_tab.dart
@@ -151,7 +151,7 @@ class _SettingsTabState extends State<SettingsTab> {
                   ? Image.network(
                       _profile!.baseUrl!,
                       fit: BoxFit.cover,
-                      errorBuilder: (context, _, __) =>
+                      errorBuilder: (context, error, stackTrace) =>
                           _buildPlaceholderAvatar(cs, name),
                     )
                   : _buildPlaceholderAvatar(cs, name),
diff --git a/lib/main.dart b/lib/main.dart
index e95dcfa..979aec2 100644
--- a/lib/main.dart
+++ b/lib/main.dart
@@ -74,7 +74,7 @@ class KometAppState extends State<KometApp> {
       final navState = KometApp.navigatorKey.currentState;
       if (navState != null) {
         final overlayContext = navState.overlay?.context;
-        if (overlayContext != null) {
+        if (overlayContext != null && overlayContext.mounted) {
           showCustomNotification(overlayContext, e.message);
         }