feat(ui): add sender name display options

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

HellionChat/Ui/ChatLogWindow.cs

@@ -3076,6 +3076,14 @@ public sealed class ChatLogWindow : Window
         float lineWidth = 0f
     )
     {
+        // UI-7: render a copy with the sender name reformatted per the user's
+        // display options. Skipped in screenshot mode so the name-anonymising
+        // path in DrawChunk stays reliable (privacy wins). ForDisplay returns
+        // the list unchanged when nothing applies, so non-sender lists and the
+        // neutral default cost only a quick scan.
+        if (!ScreenshotMode)
+            chunks = SenderNameDisplay.ForDisplay(chunks);
+
         using var style = ImRaii.PushStyle(ImGuiStyleVar.ItemSpacing, Vector2.Zero);
 
         for (var i = 0; i < chunks.Count; i++)

HellionChat/Ui/SettingsTabs/Chat.cs

@@ -157,6 +157,43 @@ internal sealed class Chat : ISettingsTab
                 ref Mutable.NotifyPluginDisclosure
             );
             ImGuiUtil.HelpMarker(HellionStrings.Settings_Chat_NotifyPluginDisclosure_Description);
+
+            // UI-7: name display options.
+            using (
+                var combo = ImGuiUtil.BeginComboVertical(
+                    HellionStrings.Settings_Chat_WorldSuffix_Name,
+                    Mutable.WorldSuffixMode.Name()
+                )
+            )
+            {
+                if (combo.Success)
+                {
+                    foreach (var mode in Enum.GetValues<WorldSuffixMode>())
+                    {
+                        if (ImGui.Selectable(mode.Name(), Mutable.WorldSuffixMode == mode))
+                            Mutable.WorldSuffixMode = mode;
+                    }
+                }
+            }
+            ImGuiUtil.HelpMarker(HellionStrings.Settings_Chat_WorldSuffix_Description);
+
+            using (
+                var combo = ImGuiUtil.BeginComboVertical(
+                    HellionStrings.Settings_Chat_NameForm_Name,
+                    Mutable.NameFormMode.Name()
+                )
+            )
+            {
+                if (combo.Success)
+                {
+                    foreach (var mode in Enum.GetValues<NameFormMode>())
+                    {
+                        if (ImGui.Selectable(mode.Name(), Mutable.NameFormMode == mode))
+                            Mutable.NameFormMode = mode;
+                    }
+                }
+            }
+            ImGuiUtil.HelpMarker(HellionStrings.Settings_Chat_NameForm_Description);
         }
     }