A network of $300,000 microfactories could make reshoring a reality for American fashion. That’s the dream for Lisa Morales-Hellebo, whose Refashiond OS made its debut at New York Fashion Week in September. But behind the flash and sizzle of a larger-than-life four-story-tall model—virtualized, of course—dancing behind Spring Studios in styles from the startup’s proof-of-concept streetwear…