style: remove em-dashes from new code comments

HellionChat/Integrations/FailedTellNotifier.cs

@@ -14,7 +14,7 @@ namespace HellionChat.Integrations;
 // failed" signal is not reachable over the processed message stream (Message
 // carries no LogMessage row id, ChatCode 60 is too broad). This hooks the one
 // ShowLogMessageString overload and toasts on a pinned id set. It is NOT the
-// broad ad-block hook layer — that stays v1.5.6.
+// broad ad-block hook layer. That stays v1.5.6.
 internal sealed class FailedTellNotifier : IDisposable
 {
     private readonly ILogger<FailedTellNotifier> _logger;

HellionChat/MessageManager.cs

@@ -344,7 +344,7 @@ internal class MessageManager : IAsyncDisposable
                 tab.AddMessage(message, unread);
 
                 // UI-3: per-tab notification sound. Fire once for the first
-                // inactive tab that wants it — keeps a message matching several
+                // inactive tab that wants it, keeping a message matching several
                 // background tabs from stacking sounds.
                 // TEST-MIRROR: ../_Helpers/TabSoundDecision.cs
                 if (notificationSound is null

HellionChat/Plugin.cs

@@ -201,7 +201,7 @@ public sealed class Plugin : IAsyncDalamudPlugin
         // Schema gate: v1.4.x+ requires config v16+. Users on older schemas
         // must install v1.4.2 first to run the migration chain. v18 adds the
         // per-tab EnableNotificationSound + NotificationSoundId fields (UI-3)
-        // and the top-level NotifyFailedTell flag (UI-2) — all additive with
+        // and the top-level NotifyFailedTell flag (UI-2), all additive with
         // defaults, so v16/v17 configs load cleanly and get their Version
         // stamp bumped after the gate.
         if (Config.Version < 16)

HellionChat/Ui/ChatLogWindow.cs

@@ -2486,7 +2486,7 @@ public sealed class ChatLogWindow : Window
 
         // UI-4: focus the rename field on the frame the context menu opens so
         // the user can type immediately. Buffer raised 128 -> 512 to match the
-        // settings-tab rename (Ui/SettingsTabs/Tabs.cs) — one name limit, not two.
+        // settings-tab rename (Ui/SettingsTabs/Tabs.cs). One name limit, not two.
         if (ImGui.IsWindowAppearing())
             ImGui.SetKeyboardFocusHere();
         ImGui.SetNextItemWidth(250f * ImGuiHelpers.GlobalScale);

HellionChat/_Helpers/FailedTellMatcher.cs

@@ -11,7 +11,7 @@ public static class FailedTellMatcher
 {
     // Log-message ids the game raises for a tell that could not be delivered.
     // Pinned from discovery (see plan Task 2, Step 9). An empty set means the
-    // hook never toasts — "no toast over a false toast" until ids are pinned.
+    // hook never toasts: "no toast over a false toast" until ids are pinned.
     public static readonly IReadOnlySet<uint> FailedTellLogMessageIds = new HashSet<uint>
     {
         // pinned in Task 2 Step 9