diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Editor/GameCult.Brokkr.Editor.asmdef b/surfaces/unity/Packages/com.gamecult.brokkr/Editor/GameCult.Brokkr.Editor.asmdef
index 14df787..ce5344f 100644
--- a/surfaces/unity/Packages/com.gamecult.brokkr/Editor/GameCult.Brokkr.Editor.asmdef
+++ b/surfaces/unity/Packages/com.gamecult.brokkr/Editor/GameCult.Brokkr.Editor.asmdef
@@ -3,10 +3,7 @@
   "rootNamespace": "GameCult.Brokkr.Editor",
   "references": [
     "GameCult.Brokkr",
-    "GameCult.Caching",
-    "GameCult.Mesh",
-    "GameCult.Networking",
-    "R3"
+    "GameCult.CultLib"
   ],
   "includePlatforms": [
     "Editor"
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins.meta b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins.meta
deleted file mode 100644
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--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins.meta
+++ /dev/null
@@ -1,8 +0,0 @@
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-folderAsset: yes
-DefaultImporter:
-  externalObjects: {}
-  userData: 
-  assetBundleName: 
-  assetBundleVariant: 
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh.meta b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh.meta
deleted file mode 100644
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--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh.meta
+++ /dev/null
@@ -1,8 +0,0 @@
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-folderAsset: yes
-DefaultImporter:
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-  userData: 
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-  assetBundleVariant: 
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/ConcurrentCollections.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/ConcurrentCollections.dll
deleted file mode 100644
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deleted file mode 100644
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+++ /dev/null
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\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Caching.MessagePack.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Caching.MessagePack.dll
deleted file mode 100644
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deleted file mode 100644
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--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Caching.MessagePack.dll.meta
+++ /dev/null
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\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Caching.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Caching.dll
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deleted file mode 100644
index 1dc87b5..0000000
--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Caching.dll.meta
+++ /dev/null
@@ -1,2 +0,0 @@
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\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Logging.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Logging.dll
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deleted file mode 100644
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+++ /dev/null
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\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Mesh.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Mesh.dll
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deleted file mode 100644
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--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Mesh.dll.meta
+++ /dev/null
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\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Networking.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/GameCult.Networking.dll
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+++ /dev/null
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\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Isopoh.Cryptography.Argon2.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Isopoh.Cryptography.Argon2.dll
deleted file mode 100644
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deleted file mode 100644
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--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Isopoh.Cryptography.Argon2.dll.meta
+++ /dev/null
@@ -1,2 +0,0 @@
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\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Isopoh.Cryptography.Blake2b.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Isopoh.Cryptography.Blake2b.dll
deleted file mode 100644
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deleted file mode 100644
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--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Isopoh.Cryptography.Blake2b.dll.meta
+++ /dev/null
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\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Isopoh.Cryptography.SecureArray.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Isopoh.Cryptography.SecureArray.dll
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deleted file mode 100644
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diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/LiteNetLib.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/LiteNetLib.dll
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deleted file mode 100644
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+++ /dev/null
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diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/MessagePack.Annotations.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/MessagePack.Annotations.dll
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deleted file mode 100644
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--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/MessagePack.Annotations.dll.meta
+++ /dev/null
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diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/MessagePack.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/MessagePack.dll
deleted file mode 100644
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deleted file mode 100644
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--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/MessagePack.dll.meta
+++ /dev/null
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diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Microsoft.Bcl.AsyncInterfaces.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Microsoft.Bcl.AsyncInterfaces.dll
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deleted file mode 100644
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+++ /dev/null
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diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Microsoft.Bcl.TimeProvider.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Microsoft.Bcl.TimeProvider.dll
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diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Microsoft.NET.StringTools.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/Microsoft.NET.StringTools.dll
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deleted file mode 100644
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diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Buffers.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Buffers.dll
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diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.ComponentModel.Annotations.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.ComponentModel.Annotations.dll
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index 491a80a..0000000
Binary files a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Runtime.CompilerServices.Unsafe.dll and /dev/null differ
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Runtime.CompilerServices.Unsafe.dll.meta b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Runtime.CompilerServices.Unsafe.dll.meta
deleted file mode 100644
index 4ff2880..0000000
--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Runtime.CompilerServices.Unsafe.dll.meta
+++ /dev/null
@@ -1,2 +0,0 @@
-fileFormatVersion: 2
-guid: 7bbc7179ab442cf44bf45ae6344c8766
\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Encodings.Web.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Encodings.Web.dll
deleted file mode 100644
index cf5ba2f..0000000
Binary files a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Encodings.Web.dll and /dev/null differ
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Encodings.Web.dll.meta b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Encodings.Web.dll.meta
deleted file mode 100644
index 1994764..0000000
--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Encodings.Web.dll.meta
+++ /dev/null
@@ -1,2 +0,0 @@
-fileFormatVersion: 2
-guid: d6474534f64e9594aa9cd78743056068
\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Json.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Json.dll
deleted file mode 100644
index fd78060..0000000
Binary files a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Json.dll and /dev/null differ
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Json.dll.meta b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Json.dll.meta
deleted file mode 100644
index f028fae..0000000
--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Text.Json.dll.meta
+++ /dev/null
@@ -1,2 +0,0 @@
-fileFormatVersion: 2
-guid: 5f598b1f1749353408add83931bd042e
\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Channels.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Channels.dll
deleted file mode 100644
index 60b45fb..0000000
Binary files a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Channels.dll and /dev/null differ
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Channels.dll.meta b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Channels.dll.meta
deleted file mode 100644
index 0afbc39..0000000
--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Channels.dll.meta
+++ /dev/null
@@ -1,2 +0,0 @@
-fileFormatVersion: 2
-guid: 0ef728200a42c6a46b150b5a3143be6f
\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Tasks.Extensions.dll b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Tasks.Extensions.dll
deleted file mode 100644
index dfab234..0000000
Binary files a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Tasks.Extensions.dll and /dev/null differ
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Tasks.Extensions.dll.meta b/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Tasks.Extensions.dll.meta
deleted file mode 100644
index 59d9599..0000000
--- a/surfaces/unity/Packages/com.gamecult.brokkr/Plugins/CultMesh/System.Threading.Tasks.Extensions.dll.meta
+++ /dev/null
@@ -1,2 +0,0 @@
-fileFormatVersion: 2
-guid: b3d0157e180a40942a31d7682f7c5674
\ No newline at end of file
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/Runtime/GameCult.Brokkr.asmdef b/surfaces/unity/Packages/com.gamecult.brokkr/Runtime/GameCult.Brokkr.asmdef
index 223d880..4a70566 100644
--- a/surfaces/unity/Packages/com.gamecult.brokkr/Runtime/GameCult.Brokkr.asmdef
+++ b/surfaces/unity/Packages/com.gamecult.brokkr/Runtime/GameCult.Brokkr.asmdef
@@ -2,8 +2,7 @@
   "name": "GameCult.Brokkr",
   "rootNamespace": "GameCult.Brokkr",
   "references": [
-    "GameCult.Caching",
-    "MessagePack"
+    "GameCult.CultLib"
   ],
   "includePlatforms": [],
   "excludePlatforms": [],
diff --git a/surfaces/unity/Packages/com.gamecult.brokkr/package.json b/surfaces/unity/Packages/com.gamecult.brokkr/package.json
index f6b385f..9fd8846 100644
--- a/surfaces/unity/Packages/com.gamecult.brokkr/package.json
+++ b/surfaces/unity/Packages/com.gamecult.brokkr/package.json
@@ -4,6 +4,9 @@
   "displayName": "Brokkr",
   "description": "Unity Editor adapter for the Brokkr CultMesh creative-tool broker.",
   "unity": "2022.3",
+  "dependencies": {
+    "org.gamecult.cultlib": "1.0.60"
+  },
   "author": {
     "name": "GameCult"
   }
diff --git a/surfaces/unity/README.md b/surfaces/unity/README.md
index 5a9a15d..9d02390 100644
--- a/surfaces/unity/README.md
+++ b/surfaces/unity/README.md
@@ -9,13 +9,14 @@ CultMesh.
 Add this package to a Unity project's `Packages/manifest.json`:
 
 ```json
-"com.gamecult.brokkr": "file:E:/Projects/Brokkr/surfaces/unity/Packages/com.gamecult.brokkr"
+"com.gamecult.brokkr": "file:F:/Projects/Brokkr/surfaces/unity/Packages/com.gamecult.brokkr"
 ```
 
-Vendor the CultMesh runtime DLLs before opening Unity:
+The package ships no assemblies. Its CultCache, CultNet and CultMesh runtime
+comes from `org.gamecult.cultlib`, which the host manifest must also resolve:
 
-```powershell
-.\tools\vendor-cultmesh-unity.ps1
+```json
+"org.gamecult.cultlib": "https://github.com/GameCult/CultLib.git?path=/unity/org.gamecult.cultlib#cultlib-unity-v1.0.60"
 ```
 
 Then open `GameCult > Brokkr`.
diff --git a/tools/check.ps1 b/tools/check.ps1
index e9d1c8e..4023541 100644
--- a/tools/check.ps1
+++ b/tools/check.ps1
@@ -48,21 +48,14 @@ try {
     Assert-Contains $syncContractText "timeline-frame" "sync contract"
     Assert-Contains $syncContractText "cinemachine-virtual-camera" "sync contract"
 
-    $pluginRoot = Join-Path (Get-Location) "surfaces\unity\Packages\com.gamecult.brokkr\Plugins\CultMesh"
-    $requiredDlls = @(
-        "GameCult.Caching.dll",
-        "GameCult.Caching.MessagePack.dll",
-        "GameCult.Mesh.dll",
-        "GameCult.Networking.dll",
-        "MessagePack.dll",
-        "R3.dll"
-    )
-
-    foreach ($dll in $requiredDlls) {
-        $path = Join-Path $pluginRoot $dll
-        if (-not (Test-Path $path)) {
-            throw "Missing vendored CultMesh Unity dependency: $path"
-        }
+    $unityPackage = Join-Path (Get-Location) "surfaces\unity\Packages\com.gamecult.brokkr"
+    $vendoredDlls = @(Get-ChildItem -Path $unityPackage -Recurse -Filter "*.dll" -File)
+    if ($vendoredDlls.Count -gt 0) {
+        throw "The Brokkr Unity package must not ship assemblies; org.gamecult.cultlib owns them: $($vendoredDlls.FullName -join ', ')"
+    }
+    $unityManifest = Get-Content (Join-Path $unityPackage "package.json") -Raw | ConvertFrom-Json
+    if (-not $unityManifest.dependencies.PSObject.Properties["org.gamecult.cultlib"]) {
+        throw "surfaces/unity package.json must depend on org.gamecult.cultlib."
     }
 
     $bundledPython = Join-Path $env:USERPROFILE ".cache\codex-runtimes\codex-primary-runtime\dependencies\python\python.exe"
diff --git a/tools/vendor-cultmesh-unity.ps1 b/tools/vendor-cultmesh-unity.ps1
deleted file mode 100644
index 779e02c..0000000
--- a/tools/vendor-cultmesh-unity.ps1
+++ /dev/null
@@ -1,52 +0,0 @@
-$ErrorActionPreference = "Stop"
-
-$repoRoot = Split-Path -Parent $PSScriptRoot
-$cultLibRoot = "E:\Projects\CultLib"
-$pluginRoot = Join-Path $repoRoot "surfaces\unity\Packages\com.gamecult.brokkr\Plugins\CultMesh"
-
-dotnet build (Join-Path $cultLibRoot "src\GameCult.Mesh\GameCult.Mesh.csproj") -c Debug
-if ($LASTEXITCODE -ne 0) {
-    throw "CultMesh build failed with exit code $LASTEXITCODE"
-}
-
-New-Item -ItemType Directory -Force -Path $pluginRoot | Out-Null
-
-$sources = @(
-    (Join-Path $cultLibRoot "bin\GameCult.Mesh\Debug\netstandard2.1\GameCult.Logging.dll"),
-    (Join-Path $cultLibRoot "bin\GameCult.Mesh\Debug\netstandard2.1\GameCult.Caching.dll"),
-    (Join-Path $cultLibRoot "bin\GameCult.Mesh\Debug\netstandard2.1\GameCult.Caching.MessagePack.dll"),
-    (Join-Path $cultLibRoot "bin\GameCult.Mesh\Debug\netstandard2.1\GameCult.Networking.dll"),
-    (Join-Path $cultLibRoot "bin\GameCult.Mesh\Debug\netstandard2.1\GameCult.Mesh.dll"),
-    "$env:USERPROFILE\.nuget\packages\concurrenthashset\1.3.0\lib\netstandard2.0\ConcurrentCollections.dll",
-    "$env:USERPROFILE\.nuget\packages\isopoh.cryptography.argon2\2.0.0\lib\netstandard2.0\Isopoh.Cryptography.Argon2.dll",
-    "$env:USERPROFILE\.nuget\packages\isopoh.cryptography.blake2b\2.0.0\lib\netstandard2.0\Isopoh.Cryptography.Blake2b.dll",
-    "$env:USERPROFILE\.nuget\packages\isopoh.cryptography.securearray\2.0.0\lib\netstandard2.0\Isopoh.Cryptography.SecureArray.dll",
-    "$env:USERPROFILE\.nuget\packages\litenetlib\2.1.2\lib\netstandard2.1\LiteNetLib.dll",
-    "$env:USERPROFILE\.nuget\packages\messagepack\3.1.4\lib\netstandard2.1\MessagePack.dll",
-    "$env:USERPROFILE\.nuget\packages\messagepack.annotations\3.1.4\lib\netstandard2.0\MessagePack.Annotations.dll",
-    "$env:USERPROFILE\.nuget\packages\microsoft.bcl.asyncinterfaces\9.0.10\lib\netstandard2.1\Microsoft.Bcl.AsyncInterfaces.dll",
-    "$env:USERPROFILE\.nuget\packages\microsoft.bcl.timeprovider\8.0.0\lib\netstandard2.0\Microsoft.Bcl.TimeProvider.dll",
-    "$env:USERPROFILE\.nuget\packages\microsoft.net.stringtools\17.11.4\lib\netstandard2.0\Microsoft.NET.StringTools.dll",
-    "$env:USERPROFILE\.nuget\packages\r3\1.3.0\lib\netstandard2.1\R3.dll",
-    "$env:USERPROFILE\.nuget\packages\system.buffers\4.5.1\lib\netstandard2.0\System.Buffers.dll",
-    "$env:USERPROFILE\.nuget\packages\system.collections.immutable\8.0.0\lib\netstandard2.0\System.Collections.Immutable.dll",
-    "$env:USERPROFILE\.nuget\packages\system.componentmodel.annotations\5.0.0\lib\netstandard2.1\System.ComponentModel.Annotations.dll",
-    "$env:USERPROFILE\.nuget\packages\system.io.pipelines\9.0.10\lib\netstandard2.0\System.IO.Pipelines.dll",
-    "$env:USERPROFILE\.nuget\packages\system.memory\4.5.5\lib\netstandard2.0\System.Memory.dll",
-    "$env:USERPROFILE\.nuget\packages\system.numerics.vectors\4.4.0\lib\netstandard2.0\System.Numerics.Vectors.dll",
-    "$env:USERPROFILE\.nuget\packages\system.runtime.compilerservices.unsafe\6.0.0\lib\netstandard2.0\System.Runtime.CompilerServices.Unsafe.dll",
-    "$env:USERPROFILE\.nuget\packages\system.text.encodings.web\9.0.10\lib\netstandard2.0\System.Text.Encodings.Web.dll",
-    "$env:USERPROFILE\.nuget\packages\system.text.json\9.0.10\lib\netstandard2.0\System.Text.Json.dll",
-    "$env:USERPROFILE\.nuget\packages\system.threading.channels\8.0.0\lib\netstandard2.1\System.Threading.Channels.dll",
-    "$env:USERPROFILE\.nuget\packages\system.threading.tasks.extensions\4.5.4\lib\netstandard2.0\System.Threading.Tasks.Extensions.dll"
-)
-
-foreach ($source in $sources) {
-    if (!(Test-Path $source)) {
-        throw "Missing CultMesh Unity dependency: $source"
-    }
-
-    Copy-Item -LiteralPath $source -Destination $pluginRoot -Force
-}
-
-Write-Host "Vendored CultMesh Unity dependencies into $pluginRoot"