Add offline JSBSim dependencies

offline-deps/setup-jsbsim-offline.ps1

@@ -0,0 +1,74 @@
+param(
+  [switch]$Force
+)
+
+$ErrorActionPreference = "Stop"
+
+$Root = Resolve-Path -LiteralPath (Join-Path $PSScriptRoot "..")
+$OfflineDeps = Join-Path $Root "offline-deps"
+$ServiceDir = Join-Path $Root "service"
+$Installer = Join-Path $OfflineDeps "installers\python-3.13.12-amd64.exe"
+$PythonRuntime = Join-Path $OfflineDeps "python-runtime"
+$RuntimePython = Join-Path $PythonRuntime "python.exe"
+$Venv = Join-Path $Root "venv"
+$VenvPython = Join-Path $Venv "Scripts\python.exe"
+$Wheels = Join-Path $OfflineDeps "wheels"
+$ServiceEnv = Join-Path $ServiceDir ".env.local"
+
+if (!(Test-Path -LiteralPath $ServiceDir)) {
+  throw "Could not find service directory. Run this script from the AS_Test project layout."
+}
+
+if (!(Test-Path -LiteralPath $Installer)) {
+  throw "Missing Python installer: $Installer"
+}
+
+if (!(Test-Path -LiteralPath $Wheels)) {
+  throw "Missing wheels directory: $Wheels"
+}
+
+if ($Force -and (Test-Path -LiteralPath $Venv)) {
+  Remove-Item -LiteralPath $Venv -Recurse -Force
+}
+
+if (!(Test-Path -LiteralPath $RuntimePython)) {
+  New-Item -ItemType Directory -Force -Path $PythonRuntime | Out-Null
+  $args = @(
+    "/quiet",
+    "InstallAllUsers=0",
+    "TargetDir=$PythonRuntime",
+    "Include_launcher=0",
+    "PrependPath=0",
+    "Include_test=0",
+    "Include_doc=0",
+    "Include_tcltk=0",
+    "Include_pip=1"
+  )
+
+  $process = Start-Process -FilePath $Installer -ArgumentList $args -Wait -PassThru -WindowStyle Hidden
+  if ($process.ExitCode -ne 0) {
+    throw "Python installer failed with exit code $($process.ExitCode)"
+  }
+}
+
+& $RuntimePython --version
+
+if (!(Test-Path -LiteralPath $VenvPython)) {
+  & $RuntimePython -m venv $Venv
+}
+
+& $VenvPython -m pip install --no-index --find-links $Wheels jsbsim==1.3.0
+& $VenvPython -c "import jsbsim, numpy; print('jsbsim', jsbsim.__version__); print('numpy', numpy.__version__)"
+
+@"
+SIM_BACKEND=jsbsim
+JSBSIM_PYTHON=$VenvPython
+"@ | Set-Content -LiteralPath $ServiceEnv -Encoding UTF8
+
+Write-Host ""
+Write-Host "JSBSim offline environment is ready."
+Write-Host "Service env written to: $ServiceEnv"
+Write-Host ""
+Write-Host "Start service with:"
+Write-Host "  cd $Root\service"
+Write-Host "  npm.cmd run start"