feat(battle-engine): CRI Atom/Mana audio+movie shim (3916->3526)

Hand-model the CRI ADX2 (audio) + CRI Mana (movie) SDK surface exercised by the copied
audio/movie engine files (AudioManager/Voice/Se/Effect/MoviePlayer). No decomp source
exists; signatures mirror the real CRI API as called at the sites (arg counts/types from
the call sites). All no-op, cosmetic, off the battle path. Reconciled with the empty CRI
stubs already in SdkStubs (CriAtomExAcb/CriAtomExPlayback/CriManaMovieMaterial).

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

SVSim.BattleEngine/Shim/External/SdkStubs.cs

@@ -3,18 +3,18 @@
 // resolution path. Namespaces must merely exist (anchors); the few types referenced
 // by member get a minimal no-op surface. Members grow only as the compile loop demands.
 
-// ---- CriWare audio + movie ----
+// ---- CriWare audio + movie (CRI types with members live in External/CriShim.cs) ----
 namespace CriWare
 {
-    public class CriAtomExAcb { }
-    public class CriAtomExPlayback { }
     internal class _ShimAnchor { }
 }
 namespace CriWare.CriMana
 {
-    public class CriManaMovieMaterial
+    public class CriManaMovieMaterial : UnityEngine.MonoBehaviour
     {
         public enum MaxFrameDrop { Disable, One, Two, Three, Four, Five, Six, Seven, Eight, Nine, Ten }
+        public MaxFrameDrop maxFrameDrop;
+        public Player player { get; } = new Player();
     }
     internal class _ShimAnchor { }
 }