fix: serialize assets after the initial plugin hook

This ensures that we don't have any references from assets to non-assets when passing control to non-NDMF hooks such as VRCF.

CHANGELOG.md

@@ -10,8 +10,10 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Added
 
 ### Fixed
+- [#408] Improved performance of `BuildContext.Serialize`
 
 ### Changed
+- [#408] Unserialized assets will be serialized after the Transforming phase completes (before e.g. VRCFury runs)
 
 ### Removed
 

Editor/VRChat/BuildFrameworkPreprocessHook.cs

@@ -5,6 +5,7 @@
 using System;
 using System.Diagnostics;
 using nadena.dev.ndmf.runtime;
+using UnityEditor;
 using UnityEngine;
 using VRC.SDKBase.Editor.BuildPipeline;
 using Debug = UnityEngine.Debug;
@@ -41,6 +42,8 @@ public bool OnPreprocessAvatar(GameObject avatarGameObject)
                 holder.context = new BuildContext(avatarGameObject, AvatarProcessor.TemporaryAssetRoot);
 
                 AvatarProcessor.ProcessAvatar(holder.context, BuildPhase.Resolving, BuildPhase.Transforming);
+                holder.context.Serialize();
+
                 return true;
             }
             catch (Exception e)