From 913ed627c6460eb5f85cf3d762262e7e1b31e5a2 Mon Sep 17 00:00:00 2001
From: Meta Vens <rwvens@hotmail.com>
Date: Tue, 18 Aug 2026 02:42:57 +0200
Subject: [PATCH] Gate CultMesh portability on Windows and Linux

---
 .github/workflows/cultmesh-portability.yml | 55 ++++++++++++++++++++++
 scripts/verify-eve-two-runtime-sample.ps1  | 17 +++++--
 2 files changed, 69 insertions(+), 3 deletions(-)
 create mode 100644 .github/workflows/cultmesh-portability.yml

diff --git a/.github/workflows/cultmesh-portability.yml b/.github/workflows/cultmesh-portability.yml
new file mode 100644
index 00000000..b8d29e5d
--- /dev/null
+++ b/.github/workflows/cultmesh-portability.yml
@@ -0,0 +1,55 @@
+name: CultMesh portability and performance
+
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  reactive-and-resource-lifetime:
+    name: ${{ matrix.os }} reactive semantics and leases
+    runs-on: ${{ matrix.os }}
+    timeout-minutes: 30
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [windows-latest, ubuntu-latest]
+
+    steps:
+      - name: Check out CultLib
+        uses: actions/checkout@v4
+
+      - name: Set up .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: 10.0.x
+
+      - name: Set up Node.js
+        uses: actions/setup-node@v4
+        with:
+          node-version: 24
+          cache: npm
+
+      - name: Set up Python
+        uses: actions/setup-python@v5
+        with:
+          python-version: "3.12"
+
+      - name: Install TypeScript workspace dependencies
+        run: npm install --no-package-lock
+
+      - name: Install Python CultCache package
+        run: python -m pip install -e packages/cultcache-py
+
+      - name: Verify explicit reactive scheduling across runtimes
+        shell: pwsh
+        run: ./scripts/verify-reactive-document-scaling.ps1
+
+      - name: Measure representative reactive workload
+        shell: pwsh
+        run: ./scripts/measure-reactive-document-performance.ps1 -Quick
+
+      - name: Churn 100,000 distinct document leases
+        run: >-
+          dotnet test tests/GameCult.Mesh.Tests/GameCult.Mesh.Tests.csproj
+          --filter FullyQualifiedName~Document_OneHundredThousandDistinctLeaseCyclesLeaveNoResourcesOrCallbacks
+          --logger "console;verbosity=minimal"
diff --git a/scripts/verify-eve-two-runtime-sample.ps1 b/scripts/verify-eve-two-runtime-sample.ps1
index f6d4ebce..8dfef6dd 100644
--- a/scripts/verify-eve-two-runtime-sample.ps1
+++ b/scripts/verify-eve-two-runtime-sample.ps1
@@ -15,10 +15,16 @@ $packageRoots = @(
     $eveContractsPackage,
     $eveBrowserPackage
 )
+$onWindows = [System.Environment]::OSVersion.Platform -eq [System.PlatformID]::Win32NT
 
-$nodeCommand = Get-Command node.exe -ErrorAction SilentlyContinue
+$nodeCommand = Get-Command node -ErrorAction SilentlyContinue
 if (-not $nodeCommand) {
-    $standardNode = Join-Path $env:ProgramFiles "nodejs\node.exe"
+    $standardNode = if ($onWindows -and $env:ProgramFiles) {
+        Join-Path $env:ProgramFiles "nodejs\node.exe"
+    }
+    else {
+        ""
+    }
     if (Test-Path -LiteralPath $standardNode) {
         $nodeCommand = Get-Item -LiteralPath $standardNode
     }
@@ -28,7 +34,12 @@ if (-not $nodeCommand) {
 }
 $nodePath = $nodeCommand.Source
 $nodeDirectory = Split-Path -Parent $nodePath
-$npmPath = Join-Path $nodeDirectory "npm.cmd"
+$npmPath = if ($onWindows) {
+    Join-Path $nodeDirectory "npm.cmd"
+}
+else {
+    (Get-Command npm -ErrorAction Stop).Source
+}
 if (-not (Test-Path -LiteralPath $npmPath)) {
     throw "npm was not found beside Node.js: $npmPath"
 }