Social bar UX: YT auto-add from connected account, two-box dialog (YT handle + URL/handle for other services), service auto-detection from URL domain, fediverse @user@domain support, footer repositioned (Social controls left under scenes/sources, meter centered under preview), validation with add-anyway fallback

MainWindow.xaml

@@ -795,12 +795,50 @@
                     <RowDefinition Height="Auto"/>
                 </Grid.RowDefinitions>
 
-                <!-- Line 1: sound meter + volume control, centered beneath the
-                     middle (preview) panel. Audio is KISS: desktop/game audio is
-                     automatic ("it just is" — WASAPI loopback at unity, zero UI);
-                     the creator's only audio control is the mic — meter, volume, mute. -->
-                <StackPanel Grid.Row="0" Orientation="Horizontal"
-                            HorizontalAlignment="Center" VerticalAlignment="Center">
+                <!-- Line 1: Social controls on the LEFT (under scenes/sources),
+                     sound meter + volume control CENTERED beneath the preview panel.
+                     Audio is KISS: desktop/game audio is automatic ("it just is" —
+                     WASAPI loopback at unity, zero UI); the creator's only audio
+                     control is the mic — meter, volume, mute. -->
+                <Grid Grid.Row="0">
+                    <Grid.ColumnDefinitions>
+                        <ColumnDefinition Width="220"/>
+                        <ColumnDefinition Width="*"/>
+                        <ColumnDefinition Width="300"/>
+                    </Grid.ColumnDefinitions>
+
+                    <!-- Social controls: centered under the scenes/sources listboxes -->
+                    <StackPanel Grid.Column="0" Orientation="Horizontal"
+                                HorizontalAlignment="Center" VerticalAlignment="Center">
+                        <Button Content="Social" Command="{Binding OpenSocialDialogCommand}"
+                                Style="{StaticResource YtButtonSecondary}" Padding="12,4"
+                                FontSize="11" VerticalAlignment="Center"
+                                ToolTip="Add or manage your social handles"/>
+                        <Button Command="{Binding ToggleSceneSocialBarCommand}"
+                                Visibility="{Binding CanToggleSceneSocialBar, Converter={StaticResource BoolToVis}}"
+                                Style="{StaticResource IconButton}" Width="28" Height="28" Margin="4,0,0,0"
+                                VerticalAlignment="Center" FontSize="16" FontWeight="Bold"
+                                ToolTip="Add or remove the social bar on this scene">
+                            <Button.Content>
+                                <TextBlock FontSize="16" FontWeight="Bold">
+                                    <TextBlock.Style>
+                                        <Style TargetType="TextBlock">
+                                            <Setter Property="Text" Value="+"/>
+                                            <Style.Triggers>
+                                                <DataTrigger Binding="{Binding SceneHasSocialBar}" Value="True">
+                                                    <Setter Property="Text" Value="−"/>
+                                                </DataTrigger>
+                                            </Style.Triggers>
+                                        </Style>
+                                    </TextBlock.Style>
+                                </TextBlock>
+                            </Button.Content>
+                        </Button>
+                    </StackPanel>
+
+                    <!-- Meter + volume: centered under the preview panel -->
+                    <StackPanel Grid.Column="1" Orientation="Horizontal"
+                                HorizontalAlignment="Center" VerticalAlignment="Center">
                     <TextBlock Text="MIC" Foreground="#a0a0b0" FontSize="11" FontWeight="SemiBold"
                                VerticalAlignment="Center" Margin="0,0,8,0" Cursor="Hand"
                                ToolTip="Choose the microphone (voice source)"
@@ -854,34 +892,8 @@
                             PreviewMouseLeftButtonDown="VolumeSlider_PreviewMouseLeftButtonDown"
                             PreviewMouseLeftButtonUp="VolumeSlider_PreviewMouseLeftButtonUp"
                             LostMouseCapture="VolumeSlider_LostMouseCapture"/>
-
-                    <Separator Margin="16,0,0,0" Background="#2a3a5e" Width="1" Height="20"
-                               VerticalAlignment="Center"/>
-                    <Button Content="Social" Command="{Binding OpenSocialDialogCommand}"
-                            Style="{StaticResource YtButtonSecondary}" Padding="12,4" Margin="8,0,0,0"
-                            FontSize="11" VerticalAlignment="Center"
-                            ToolTip="Add or manage your social handles"/>
-                    <Button Command="{Binding ToggleSceneSocialBarCommand}"
-                            Visibility="{Binding CanToggleSceneSocialBar, Converter={StaticResource BoolToVis}}"
-                            Style="{StaticResource IconButton}" Width="28" Height="28" Margin="4,0,0,0"
-                            VerticalAlignment="Center" FontSize="16" FontWeight="Bold"
-                            ToolTip="Add or remove the social bar on this scene">
-                        <Button.Content>
-                            <TextBlock FontSize="16" FontWeight="Bold">
-                                <TextBlock.Style>
-                                    <Style TargetType="TextBlock">
-                                        <Setter Property="Text" Value="+"/>
-                                        <Style.Triggers>
-                                            <DataTrigger Binding="{Binding SceneHasSocialBar}" Value="True">
-                                                <Setter Property="Text" Value="−"/>
-                                            </DataTrigger>
-                                        </Style.Triggers>
-                                    </Style>
-                                </TextBlock.Style>
-                            </TextBlock>
-                        </Button.Content>
-                    </Button>
-                </StackPanel>
+                    </StackPanel>
+                </Grid>
 
                 <!-- Line 2: everything else — stream stats on the left, quality +
                      gear on the right. -->

Models/Socials.cs

@@ -136,4 +136,64 @@ public static class SocialServiceIcons
             _ => $"https://{h}",
         };
     }
+
+    /// <summary>
+    /// Auto-detects the social service from a URL or fediverse handle. Supports
+    /// full URLs (https://x.com/user), domain-only (x.com/user), and fediverse
+    /// handles (@user@instance.tube). Returns Link/Website for unknown domains
+    /// or bare handles — the caller can then ask which service it is.
+    /// </summary>
+    public static (SocialService service, string handle, string url) DetectService(string input)
+    {
+        var trimmed = input.Trim();
+
+        // Fediverse handle: @user@domain
+        if (trimmed.StartsWith("@") && trimmed.IndexOf('@', 1) > 0)
+        {
+            var parts = trimmed.TrimStart('@').Split('@', 2);
+            if (parts.Length == 2)
+            {
+                var (user, domain) = (parts[0], parts[1]);
+                return (SocialService.Link, user, $"https://{domain}/@{user}");
+            }
+        }
+
+        // Strip protocol for domain parsing
+        var url = trimmed;
+        if (!trimmed.StartsWith("http", StringComparison.OrdinalIgnoreCase))
+            url = $"https://{trimmed}";
+
+        try
+        {
+            var uri = new Uri(url);
+            var domain = uri.Host.ToLowerInvariant();
+            var path = uri.AbsolutePath.Trim('/');
+
+            return domain switch
+            {
+                "youtube.com" or "www.youtube.com" or "youtu.be" => (SocialService.YouTube, path, url),
+                "twitch.tv" or "www.twitch.tv" => (SocialService.Twitch, path, url),
+                "x.com" or "twitter.com" => (SocialService.X, path, url),
+                "instagram.com" or "www.instagram.com" => (SocialService.Instagram, path, url),
+                "tiktok.com" or "www.tiktok.com" => (SocialService.TikTok, path, url),
+                "facebook.com" or "www.facebook.com" or "fb.com" => (SocialService.Facebook, path, url),
+                "discord.gg" or "discord.com" => (SocialService.Discord, path, url),
+                "kick.com" => (SocialService.Kick, path, url),
+                "threads.net" or "www.threads.net" => (SocialService.Threads, path, url),
+                "bsky.app" => (SocialService.Bluesky, path, url),
+                "github.com" => (SocialService.GitHub, path, url),
+                "linkedin.com" or "www.linkedin.com" => (SocialService.LinkedIn, path, url),
+                "pinterest.com" or "www.pinterest.com" => (SocialService.Pinterest, path, url),
+                "snapchat.com" => (SocialService.Snapchat, path, url),
+                "reddit.com" or "www.reddit.com" => (SocialService.Reddit, path, url),
+                "wa.me" or "whatsapp.com" => (SocialService.WhatsApp, path, url),
+                "t.me" => (SocialService.Telegram, path, url),
+                _ => (SocialService.Website, path, url),
+            };
+        }
+        catch
+        {
+            return (SocialService.Link, trimmed.TrimStart('@'), SocialServiceIcons.CanonicalUrlFor(SocialService.Link, trimmed));
+        }
+    }
 }

ViewModels/MainViewModel.cs

@@ -889,6 +889,7 @@ public class MainViewModel : ViewModelBase
 
             IsConnected = true;
             SyncConnectedAccount();
+            AutoAddYouTubeSocial();
         }
         catch (Exception ex)
         {
@@ -903,6 +904,34 @@ public class MainViewModel : ViewModelBase
         AccountDisplayName = channel?.DisplayName ?? string.Empty;
     }
 
+    /// <summary>
+    /// When the creator is connected to YouTube and hasn't defined any socials yet,
+    /// auto-add YouTube as the first entry — the connected channel is the default
+    /// social, no extra input needed.
+    /// </summary>
+    private void AutoAddYouTubeSocial()
+    {
+        if (_socials != null && _socials.Entries.Count > 0) return;
+        var channel = _youtubeAuth.CurrentChannel;
+        if (channel == null || string.IsNullOrWhiteSpace(channel.DisplayName)) return;
+
+        _socials ??= new SocialsConfig();
+        var handle = channel.DisplayName.Trim().TrimStart('@');
+        _socials.Entries.Add(new SocialEntry
+        {
+            Service = SocialService.YouTube,
+            Handle = handle,
+            ProfileUrl = !string.IsNullOrWhiteSpace(channel.ChannelId)
+                ? $"https://www.youtube.com/channel/{channel.ChannelId}"
+                : SocialServiceIcons.CanonicalUrlFor(SocialService.YouTube, handle),
+        });
+
+        OnPropertyChanged(nameof(HasSocials));
+        OnPropertyChanged(nameof(CanToggleSceneSocialBar));
+        OnPropertyChanged(nameof(CanAddMoreSocials));
+        ScheduleSave();
+    }
+
     private static string DefaultLayoutPath => Path.Combine(
         Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData),
         "ytLlive",
@@ -1826,10 +1855,6 @@ public class MainViewModel : ViewModelBase
 
     private void OpenSocialDialog()
     {
-        // The social dialog is a simple input flow: pick a service, enter a
-        // handle/URL, the app validates by looking up the page, and on success
-        // adds the entry. For now this is a MessageBox-based flow — a proper
-        // dialog window follows once the bar rendering is validated.
         if (!CanAddMoreSocials)
         {
             MessageBox.Show(
@@ -1840,34 +1865,69 @@ public class MainViewModel : ViewModelBase
             return;
         }
 
-        var services = string.Join(", ", Enum.GetNames<SocialService>());
-        var input = ShowInputDialog($"Service ({services}):", "Add Social — Step 1 of 2", "YouTube");
-        if (string.IsNullOrWhiteSpace(input)) return;
-        if (!Enum.TryParse<SocialService>(input, true, out var service))
+        // Step 1: YouTube handle — pre-filled from the connected account if available.
+        var ytHandle = IsConnected && _youtubeAuth.CurrentChannel is { } ch
+            ? ch.DisplayName
+            : ShowInputDialog("Your YouTube handle (e.g. @yourchannel):", "Add Social — YouTube", "@yourchannel");
+        if (string.IsNullOrWhiteSpace(ytHandle)) return;
+        ytHandle = ytHandle.Trim().TrimStart('@');
+
+        // Validate the YT handle (or skip validation if it came from the connected account).
+        if (!IsConnected || _socials?.Entries.Any(e => e.Service == SocialService.YouTube) != true)
         {
-            MessageBox.Show($"'{input}' isn't a recognized service. Try one of: {services}.",
-                "ytLlive", MessageBoxButton.OK, MessageBoxImage.Warning);
+            var ytResult = _socialValidator.LookupAsync(SocialService.YouTube, ytHandle).GetAwaiter().GetResult();
+            if (!ytResult.Success)
+            {
+                var proceed = MessageBox.Show(
+                    $"{ytResult.Error}\n\nAdd anyway?", "ytLlive",
+                    MessageBoxButton.YesNo, MessageBoxImage.Warning);
+                if (proceed != MessageBoxResult.Yes) return;
+            }
+            _socials ??= new SocialsConfig();
+            _socials.Entries.Add(new SocialEntry
+            {
+                Service = SocialService.YouTube,
+                Handle = ytHandle,
+                ProfileUrl = SocialServiceIcons.CanonicalUrlFor(SocialService.YouTube, ytHandle),
+            });
+        }
+
+        // Step 2: Another social — URL or handle string, auto-detect the service.
+        if (!CanAddMoreSocials)
+        {
+            NotifySocialsChanged();
             return;
         }
 
-        var handle = ShowInputDialog($"Your {service} handle or profile URL:", "Add Social — Step 2 of 2", "@yourhandle");
-        if (string.IsNullOrWhiteSpace(handle)) return;
+        var input = ShowInputDialog(
+            "Enter a URL or handle for another social:\n" +
+            "e.g. https://x.com/yourname  or  @you@instance.tube",
+            "Add Social — Step 2 of 2", "");
+        if (string.IsNullOrWhiteSpace(input)) { NotifySocialsChanged(); return; }
 
+        var (service, handle, url) = SocialServiceIcons.DetectService(input);
         var result = _socialValidator.LookupAsync(service, handle).GetAwaiter().GetResult();
         if (!result.Success)
         {
-            MessageBox.Show(result.Error, "ytLlive", MessageBoxButton.OK, MessageBoxImage.Warning);
-            return;
+            var proceed = MessageBox.Show(
+                $"{result.Error}\n\nAdd anyway?", "ytLlive",
+                MessageBoxButton.YesNo, MessageBoxImage.Warning);
+            if (proceed != MessageBoxResult.Yes) { NotifySocialsChanged(); return; }
         }
 
         _socials ??= new SocialsConfig();
         _socials.Entries.Add(new SocialEntry
         {
             Service = service,
-            Handle = result.Handle,
-            ProfileUrl = result.ProfileUrl,
+            Handle = handle,
+            ProfileUrl = result.Success ? result.ProfileUrl : url,
         });
 
+        NotifySocialsChanged();
+    }
+
+    private void NotifySocialsChanged()
+    {
         OnPropertyChanged(nameof(HasSocials));
         OnPropertyChanged(nameof(CanToggleSceneSocialBar));
         OnPropertyChanged(nameof(CanAddMoreSocials));