Fix code analysis issues: remove unused imports, debug prints, fix deprecated methods and naming conventions

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),

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(

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),

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),