fix: ILRepack LZMA-SDK into single DLL

- Merge SevenZip.dll (LZMA-SDK) into KK_SaveLoadCompression.dll
- Add /lib paths for BepInEx, IllusionLibs, and Unity references
- Fixes ReflectionTypeLoadException at runtime

Author: solidlime

KK_SaveLoadCompression.Plugin/KK_SaveLoadCompression.csproj

@@ -13,11 +13,29 @@
     <PackageReference Include="IllusionLibs.Koikatu.Assembly-CSharp" Version="2019.4.27.4" />
     <PackageReference Include="IllusionLibs.Koikatu.Assembly-CSharp-firstpass" Version="2019.4.27.4" />
     <PackageReference Include="IllusionLibs.Koikatu.UnityEngine" Version="5.6.2.4" />
+    <PackageReference Include="ILRepack" Version="2.0.18" />
     <PackageReference Include="LZMA-SDK" Version="19.0.0" />
   </ItemGroup>
 
   <ItemGroup>
     <EmbeddedResource Include="Resources\zip_watermark.png" />
     <EmbeddedResource Include="Resources\unzip_watermark.png" />
   </ItemGroup>
+
+  <!-- Copy SevenZip.dll (LZMA-SDK) to output for ILRepack -->
+  <Target Name="CopyLzmaForRepack" AfterTargets="Build" Condition="'$(Configuration)' == 'Release'">
+    <Copy SourceFiles="$(NuGetPackageRoot)lzma-sdk\19.0.0\lib\net20\SevenZip.dll" DestinationFolder="$(OutputPath)" SkipUnchangedFiles="true" />
+  </Target>
+
+  <!-- ILRepack: merge SevenZip.dll into output DLL -->
+  <Target Name="ILRepack" AfterTargets="CopyLzmaForRepack" Condition="'$(Configuration)' == 'Release'">
+    <PropertyGroup>
+      <ILRepackExe>$(NuGetPackageRoot)ilrepack\2.0.18\tools\ILRepack.exe</ILRepackExe>
+      <IllusionLib>$(NuGetPackageRoot)illusionlibs.koikatu.assembly-csharp\2019.4.27.4\lib\net35</IllusionLib>
+      <UnityLib>$(NuGetPackageRoot)illusionlibs.koikatu.unityengine\5.6.2.4\lib\net35</UnityLib>
+      <GameBepInEx>G:\MyGAME\Koikatsu\BepInEx\core</GameBepInEx>
+      <LibPaths>/lib:"$(IllusionLib)" /lib:"$(UnityLib)" /lib:"$(GameBepInEx)"</LibPaths>
+    </PropertyGroup>
+    <Exec Command="&quot;$(ILRepackExe)&quot; $(LibPaths) /target:library /internalize /out:&quot;$(OutputPath)KK_SaveLoadCompression.dll&quot; &quot;$(OutputPath)KK_SaveLoadCompression.dll&quot; &quot;$(OutputPath)SevenZip.dll&quot;" />
+  </Target>
 </Project>