Cut the comments from the refactored code

Three survive: why AppServices is hand-wired, the cp1250 registration trap, and
the IsDieselEngine note carried over from Physics.cs.

StarterNG/Domain/Sceneries/Scenery.cs

@@ -9,43 +9,22 @@ using StarterNG.Domain;
 
 namespace StarterNG.Domain.Sceneries;
 
-/// <summary>A file the scenery offers to open alongside it (map, manual, ...).</summary>
 public sealed class SceneryAttachment
 {
     public string FilePath = "";
     public string Label = "";
 }
 
-/// <summary>
-/// An <c>include</c> the scenery marks as optional, so the user can decide
-/// whether it ends up in the exported scenario.
-/// </summary>
 public sealed class SceneryInclude
 {
     public string FilePath = "";
     public string Desc = "";
 
-    /// <summary>1 = on by default, 2 = only when no companion timetable exists.</summary>
     public int Kind;
 
     public bool Selected;
 }
 
-/// <summary>
-/// A scenario the user can start: its consists, loose vehicles, optional
-/// includes and weather, plus the ability to render all of that back into a .scn
-/// the simulator can load.
-/// </summary>
-/// <remarks>
-/// The aggregate is pure: it never reads or writes files. Parsing lives in
-/// <c>Infrastructure.Sceneries.SceneryParser</c> and loading in
-/// <c>SceneryRepository</c>, which is what lets the export rules be tested from
-/// a string rather than an installation.
-///
-/// <see cref="Template"/> is the .scn text with every trainset replaced by a
-/// <c>{{index}}</c> placeholder and the optional includes stripped, so
-/// <see cref="BuildExportContent"/> only has to substitute rather than re-parse.
-/// </remarks>
 public sealed class Scenery
 {
     public Scenery(string path, string template)
@@ -54,13 +33,10 @@ public sealed class Scenery
         Template = template;
     }
 
-    /// <summary>Path of the .scn this was parsed from; the aggregate's identity.</summary>
     public string Path { get; }
 
-    /// <summary>The .scn body with trainset placeholders, used for export.</summary>
     public string Template { get; }
 
-    /// <summary>True when a companion .sbt timetable sits next to the .scn.</summary>
     public bool HasCompanionTimetable { get; set; }
 
     public string? Group { get; set; }
@@ -71,7 +47,6 @@ public sealed class Scenery
 
     public string? ImageName { get; set; }
 
-    /// <summary>Scenery kept for historical interest; hidden unless asked for.</summary>
     public bool Archival { get; set; }
 
     public List<Trainset> Trainsets { get; } = new();
@@ -80,38 +55,21 @@ public sealed class Scenery
 
     public List<SceneryInclude> Includes { get; } = new();
 
-    /// <summary>Vehicles placed directly as nodes rather than inside a trainset.</summary>
     public List<Dynamic> LooseVehicles { get; } = new();
 
-    /// <summary>
-    /// Names of every loose vehicle, including those whose node failed to parse
-    /// and therefore has no <see cref="Dynamic"/>.
-    /// </summary>
     public List<string> LooseVehicleNames { get; } = new();
 
-    /// <summary>Parse problems worth showing on the scenario's fault list.</summary>
     public List<string> Faults { get; } = new();
 
     public SceneryWeather Weather { get; } = new();
 
     public string DisplayName => System.IO.Path.GetFileNameWithoutExtension(Path);
 
-    /// <summary>
-    /// The description with any "@key" references resolved against the scenery's
-    /// own translation files.
-    /// </summary>
     public string LocalizedDescription(ISceneryTranslations translations) =>
         string.IsNullOrEmpty(Description)
             ? ""
             : string.Join("\n", Description.Split('\n').Select(translations.Translate));
 
-    /// <summary>
-    /// Renders the scenario the simulator should load: the original file with the
-    /// user's consists, weather and optional includes applied.
-    /// </summary>
-    /// <param name="skipDecorTrainsets">
-    /// Drops AI trainsets the user marked irrelevant, which shortens loading.
-    /// </param>
     public string BuildExportContent(bool skipDecorTrainsets, IRandomSource random)
     {
         string result = Template;
@@ -154,8 +112,6 @@ public sealed class Scenery
         var sb = new StringBuilder();
         foreach (var include in Includes)
         {
-            // Kind 2 is the scenery's own timetable stand-in: it is only wanted
-            // when the user has not supplied a companion .sbt.
             if (include.Kind == 2)
             {
                 if (!HasCompanionTimetable)
@@ -172,10 +128,6 @@ public sealed class Scenery
         return InsertBeforeFirstInit(text, sb.ToString(), fallbackAtEnd: false);
     }
 
-    /// <summary>
-    /// Places generated content ahead of <c>FirstInit</c>, which the simulator
-    /// treats as the end of the definition section.
-    /// </summary>
     private static string InsertBeforeFirstInit(string text, string addition, bool fallbackAtEnd)
     {
         var firstInit = Regex.Match(text, @"\bFirstInit\b", RegexOptions.IgnoreCase);