Code cleanup

src/Decho/ViewModels/UserViewModel.cs

@@ -7,7 +7,6 @@ namespace Decho.ViewModels;
 
 public sealed class UserViewModel(UserPresenceDto dto) : ViewModelBase
 {
-    private UserStatus _status = dto.Status;
     public string Username { get; } = dto.Username;
     public string DisplayName { get; } = dto.DisplayName ?? dto.Username;
     public string? NicknameColor { get; } = dto.NicknameColor;
@@ -16,20 +15,20 @@ public sealed class UserViewModel(UserPresenceDto dto) : ViewModelBase
 
     public UserStatus Status
     {
-        get => _status;
+        get;
         set
         {
-            if (_status == value)
+            if (field == value)
             {
                 return;
             }
 
-            _status = value;
+            field = value;
             this.RaisePropertyChanged();
             this.RaisePropertyChanged(nameof(StatusColor));
             this.RaisePropertyChanged(nameof(StatusText));
         }
-    }
+    } = dto.Status;
 
     public string FullName => DisplayName ?? Username;
 

src/Decho/Views/MessageItemView.axaml.cs

@@ -59,9 +59,9 @@ public partial class MessageItemView : UserControl
 
         tb.Inlines?.Clear();
 
-        var mentionMatches = MentionRegex.Matches(content).Cast<Match>();
-        var channelMatches = ChannelRegex.Matches(content).Cast<Match>();
-        var allMatches = mentionMatches.Concat(channelMatches)
+        IEnumerable<Match> mentionMatches = MentionRegex.Matches(content).Cast<Match>();
+        IEnumerable<Match> channelMatches = ChannelRegex.Matches(content).Cast<Match>();
+        List<Match> allMatches = mentionMatches.Concat(channelMatches)
             .OrderBy(m => m.Index)
             .ToList();
 
@@ -74,11 +74,11 @@ public partial class MessageItemView : UserControl
             }
 
             bool isMention = match.Value[0] == '@';
-            var container = new InlineUIContainer
+            InlineUIContainer container = new InlineUIContainer
             {
                 BaselineAlignment = BaselineAlignment.Center,
             };
-            var label = new TextBlock
+            TextBlock label = new TextBlock
             {
                 Text = match.Value,
                 FontWeight = FontWeight.Bold,