feat(battle-engine): final type-frontier residual (Story/Title/Friend stubs, SDK anchors, Unity AndroidJavaObject/WebCamTexture)

Clears the last CS0246/CS0234 type frontier; per F3 this unmasks the AI-subsystem
member bodies (~9k member-level errors) -- next grind is extension copies + god-object
member growth.

SVSim.BattleEngine/Shim/External/LooseEnds.cs

@@ -47,4 +47,14 @@ namespace Steamworks
 {
     // Steam callback wrapper (engine only references the type).
     public sealed class Callback<T> { }
+    // Microtransaction auth response struct (referenced as a callback type arg).
+    public struct MicroTxnAuthorizationResponse_t { }
 }
+
+// ---- third-party SDK namespace anchors (referenced via `using`) ----
+namespace Facebook { internal class _ShimAnchor { } }
+namespace Facebook.Unity { internal class _ShimAnchor { } }
+namespace RedShellSDK { internal class _ShimAnchor { } }
+namespace ZXing { internal class _ShimAnchor { } }
+namespace ZXing.QrCode { internal class _ShimAnchor { } }
+namespace ZXing.QrCode.Internal { internal class _ShimAnchor { } }

SVSim.BattleEngine/Shim/UnityEngine/UnityShim.cs

@@ -326,9 +326,13 @@ namespace UnityEngine
     public class SerializeField : Attribute { }
     public class HideInInspector : Attribute { }
     public class ExecuteInEditMode : Attribute { }
+    public class ExecuteAlwaysAttribute : Attribute { }
+    public class AndroidJavaObject : IDisposable { public AndroidJavaObject(string className, params object[] args) { } public T Call<T>(string method, params object[] args) => default; public void Call(string method, params object[] args) { } public T Get<T>(string name) => default; public void Set<T>(string name, T val) { } public void Dispose() { } }
+    public class WebCamTexture : Texture { public WebCamTexture() { } public WebCamTexture(int w, int h, int fps) { } public void Play() { } public void Stop() { } public bool isPlaying => false; public Color32[] GetPixels32() => new Color32[0]; }
     public class AddComponentMenu : Attribute { public AddComponentMenu(string n) { } public AddComponentMenu(string n, int o) { } }
     public class ContextMenu : Attribute { public ContextMenu(string n) { } }
-    public class RequireComponent : Attribute { public RequireComponent(Type a) { } public RequireComponent(Type a, Type b) { } }
+    [AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
+    public class RequireComponent : Attribute { public RequireComponent(Type a) { } public RequireComponent(Type a, Type b) { } public RequireComponent(Type a, Type b, Type c) { } }
     public class HeaderAttribute : Attribute { public HeaderAttribute(string h) { } }
     public class TooltipAttribute : Attribute { public TooltipAttribute(string t) { } }
     public class SpaceAttribute : Attribute { public SpaceAttribute() { } public SpaceAttribute(float h) { } }

SVSim.BattleEngine/Shim/View/StoryTitleStubs.cs

@@ -0,0 +1,33 @@
+// AUTHORED SHIM (not copied). Final M1 residual: non-battle Story chapter-selection /
+// Title / Friend / RoomMatch types swept into the closure but never driven headless,
+// plus the namespace anchors their `using` directives target. Empty stubs (no copied
+// type inherits them); members would unmask only if a battle path touched them.
+
+namespace Wizard.Story
+{
+    public enum StoryEntranceType { None, MainStory, LimitedStory, EventStory, AllStory }
+}
+
+namespace Wizard.Story.ChapterSelection
+{
+    public class CommonPrefabContainer { }
+    public class TitlePanelBase { }
+}
+
+namespace Wizard.Story.ChapterSelection.SelectionProcessing.Main
+{
+    // Parallel to the BattleResult submodule (already shimmed); some copied files
+    // `using` this Main module and reference these unqualified.
+    public interface IProcessing { }
+    public class Parameter { }
+}
+
+namespace Wizard.UIFriend { public class Friend { public class PlayerData { } } }
+namespace Wizard.Title { public class GameSetup { } }
+namespace Wizard.RoomMatch { public class Player { } }
+
+// ---- namespace anchors (referenced via `using`) ----
+namespace Wizard.Scripts.Network.Task.ItemAcquireHistory { internal class _ShimAnchor { } }
+namespace Wizard.UI.Profile { internal class _ShimAnchor { } }
+namespace Wizard.UI.ReportToManagement { internal class _ShimAnchor { } }
+namespace Wizard.Battle.Tutorial { internal class _ShimAnchor { } }