Add YuE2 host, worker, and setup scripts.

Co-authored-by: Cursor <cursoragent@cursor.com>

scripts/setup-yue2.ps1

@@ -0,0 +1,23 @@
+# Standalone YuE2 only. Never install into Comfy's Python environment.
+[CmdletBinding()]
+param(
+  [string]$Root = 'C:\Users\ianjm\Development\YuE2',
+  [string]$Uv = 'uv'
+)
+$ErrorActionPreference = 'Stop'
+$Root = [IO.Path]::GetFullPath($Root)
+function Run([string]$Exe, [string[]]$Arguments) {
+  & $Exe @Arguments
+  if ($LASTEXITCODE -ne 0) { throw "$Exe failed ($LASTEXITCODE)" }
+}
+if (!(Test-Path -LiteralPath $Root)) {
+  Run git @('clone', 'https://github.com/multimodal-art-projection/YuE.git', $Root)
+}
+Run $Uv @('venv', '--allow-existing', '--python', '3.12', (Join-Path $Root '.venv'))
+$python = Join-Path $Root '.venv\Scripts\python.exe'
+Run $Uv @('pip', 'install', '--python', $python, 'torch', 'torchaudio', '--index-url', 'https://download.pytorch.org/whl/cu128')
+Run $Uv @('pip', 'install', '--python', $python, '-e', $Root)
+Run $Uv @('pip', 'install', '--python', $python, 'soundfile', 'psutil')
+Run $python @('-c', 'import torch; from yue2 import YuE2Pipeline; assert torch.cuda.is_available(); print(torch.__version__, torch.cuda.get_device_name(0))')
+@{ model='m-a-p/YuE2-3B'; vae='m-a-p/YuE2-Vae'; python=$python } | ConvertTo-Json | Set-Content -LiteralPath (Join-Path $Root 'aigen-ready.json') -Encoding utf8
+Write-Host "YuE2 ready at $Root. Set YUE2_ROOT / YUE2_PYTHON on the GPU host if needed. Weights download from Hugging Face on first song. No Comfy environment was modified."