From 43f3758c1488db037aac5967000864fd3180e319 Mon Sep 17 00:00:00 2001
From: SashaRX <SashaRX@ya.ru>
Date: Thu, 6 Aug 2026 04:58:20 +0200
Subject: [PATCH] Keep sidecar replay opt-in local

---
 Editor/PostprocessorDefineManager.cs      | 11 +++++++----
 Editor/Settings/MeshLabProjectSettings.cs | 15 +++++++++------
 2 files changed, 16 insertions(+), 10 deletions(-)

diff --git a/Editor/PostprocessorDefineManager.cs b/Editor/PostprocessorDefineManager.cs
index 2a47462b..5a8e5e86 100644
--- a/Editor/PostprocessorDefineManager.cs
+++ b/Editor/PostprocessorDefineManager.cs
@@ -1,20 +1,23 @@
 // PostprocessorDefineManager.cs — sidecar replay toggle.
-// Storage now lives in MeshLabProjectSettings (per-project, committed).
+// Storage is a per-user opt-in so an untrusted project cannot enable replay.
 // This class is kept as a thin shim so existing call sites don't need changes.
 
+using UnityEditor;
+
 namespace SashaRX.UnityMeshLab
 {
     static class PostprocessorDefineManager
     {
+        const string PrefKey = "LightmapUvTool.SidecarUv2Mode";
+
         internal static bool IsEnabled()
         {
-            return MeshLabProjectSettings.Instance.sidecarMode;
+            return EditorPrefs.GetBool(PrefKey, false);
         }
 
         internal static void SetEnabled(bool enabled)
         {
-            MeshLabProjectSettings.Instance.sidecarMode = enabled;
-            MeshLabProjectSettings.Save();
+            EditorPrefs.SetBool(PrefKey, enabled);
         }
     }
 }
diff --git a/Editor/Settings/MeshLabProjectSettings.cs b/Editor/Settings/MeshLabProjectSettings.cs
index 7de0caab..2ecaa377 100644
--- a/Editor/Settings/MeshLabProjectSettings.cs
+++ b/Editor/Settings/MeshLabProjectSettings.cs
@@ -17,9 +17,6 @@ class MeshLabProjectSettings : ScriptableObject
         // ── Output ──
         public string savePath = "Assets/LightmapUvTool_Output";
 
-        // ── UV2 pipeline ──
-        public bool sidecarMode;
-
         // ── Vertex AO defaults ──
         public int aoChannelType;   // 0=VertexColor, 1-5=UV0-UV4
         public int aoChannelComp;   // 0=R/X, 1=G/Y, 2=B, 3=A
@@ -115,8 +112,14 @@ static void OnGUI(string searchContext)
 
             EditorGUILayout.Space(12);
             EditorGUILayout.LabelField("UV2 Pipeline", EditorStyles.boldLabel);
-            inst.sidecarMode = EditorGUILayout.Toggle("Sidecar UV2 Mode", inst.sidecarMode);
-            if (!inst.sidecarMode)
+            bool sidecarMode = PostprocessorDefineManager.IsEnabled();
+            bool requestedSidecarMode = EditorGUILayout.Toggle(
+                new GUIContent("Sidecar UV2 Mode",
+                    "Stored as a local Editor preference. Projects cannot enable persistent replay."),
+                sidecarMode);
+            if (requestedSidecarMode != sidecarMode)
+                PostprocessorDefineManager.SetEnabled(requestedSidecarMode);
+            if (!requestedSidecarMode)
                 EditorGUILayout.HelpBox(
                     "Persistent replay is OFF. FBX overwrite will use one-shot replay only.",
                     MessageType.None);
@@ -186,7 +189,7 @@ static void ResetToDefaults()
                 inst.borderPaddingPx = fresh.borderPaddingPx;
                 inst.repackPerMesh   = fresh.repackPerMesh;
                 inst.savePath        = fresh.savePath;
-                inst.sidecarMode     = fresh.sidecarMode;
+                PostprocessorDefineManager.SetEnabled(false);
                 inst.aoChannelType   = fresh.aoChannelType;
                 inst.aoChannelComp   = fresh.aoChannelComp;
                 inst.showDebugUI     = fresh.showDebugUI;