A Windows console on a legacy code page (cp1252, or cp437 in cmd)
raises UnicodeEncodeError on emoji. The startup banner printed a 🫶
prefix and display names like "Model Downloader 🌐", which aborts
loading the whole node pack. Same approach as ComfyUI_PromptManager:
- Banner prints ASCII-only display names (emoji stay in the UI names)
- Preset validation messages print "1024x1024" instead of "1024×1024"
- Explicit UTF-8 for text files (Windows defaults to cp1252)
- Regression test imports the package with a strict cp1252/cp437 stdout
