Event-driven dialog queue, story flag command, mod unit tests

Push-based event chains, runtime fixes (single end, goto lifecycle, if,
busy box, held delay, empty options, timed/animated/effect actions), the
'flag name value' DSL command, autoplay --dialogs=N, 19 mod unit tests.

src/Scenarios/ICommandReferenceMetadata.cs

@@ -1,40 +1,40 @@
-namespace Cthangover.Mods.Dialog.Scenarios
-{
-    /// <summary>
-    /// Classifies the type of resource that the first positional argument of a
-    /// scenario command refers to. Used for dependency tracking — the build tool
-    /// can scan commands by their <see cref="ICommandReferenceMetadata"/> to
-    /// discover which assets (backgrounds, scenes, music, etc.) are referenced
-    /// and need to be packed into the final build.
-    /// </summary>
-    public enum PositionalReferenceKind
-    {
-        /// <summary>No resource reference in the first positional argument.</summary>
-        None,
-        /// <summary>A background image resource path.</summary>
-        Background,
-        /// <summary>A scene resource path (for scene switching).</summary>
-        Scene,
-        /// <summary>A music/audio resource path.</summary>
-        Music,
-        /// <summary>A sound effect resource path.</summary>
-        Sound,
-        /// <summary>An effect/shader resource path.</summary>
-        Effect,
-        /// <summary>An interactive action definition ID.</summary>
-        Action
-    }
-
-    /// <summary>
-    /// Optional interface for command strategies whose first positional argument
-    /// references an external resource. Strategies implementing this interface
-    /// are inspected by the build pipeline to collect asset dependencies.
-    /// </summary>
-    public interface ICommandReferenceMetadata
-    {
-        /// <summary>
-        /// The kind of resource referenced by the first positional argument of this command.
-        /// </summary>
-        PositionalReferenceKind Positional0Kind { get; }
-    }
-}
+namespace Cthangover.Mods.Dialog.Scenarios
+{
+    /// <summary>
+    /// Classifies the type of resource that the first positional argument of a
+    /// scenario command refers to. Used for dependency tracking — the build tool
+    /// can scan commands by their <see cref="ICommandReferenceMetadata"/> to
+    /// discover which assets (backgrounds, scenes, music, etc.) are referenced
+    /// and need to be packed into the final build.
+    /// </summary>
+    public enum PositionalReferenceKind
+    {
+        /// <summary>No resource reference in the first positional argument.</summary>
+        None,
+        /// <summary>A background image resource path.</summary>
+        Background,
+        /// <summary>A scene resource path (for scene switching).</summary>
+        Scene,
+        /// <summary>A music/audio resource path.</summary>
+        Music,
+        /// <summary>A sound effect resource path.</summary>
+        Sound,
+        /// <summary>An effect/shader resource path.</summary>
+        Effect,
+        /// <summary>An interactive action definition ID.</summary>
+        Action
+    }
+
+    /// <summary>
+    /// Optional interface for command strategies whose first positional argument
+    /// references an external resource. Strategies implementing this interface
+    /// are inspected by the build pipeline to collect asset dependencies.
+    /// </summary>
+    public interface ICommandReferenceMetadata
+    {
+        /// <summary>
+        /// The kind of resource referenced by the first positional argument of this command.
+        /// </summary>
+        PositionalReferenceKind Positional0Kind { get; }
+    }
+}