Why does AI create random class names, and how do I stop it?

When the cloud MCP builds a layout it tends to invent a new class per element instead of reusing your system. The fix is to give it your naming rules up front — either describe your class-naming convention and tell it to reuse existing classes, or hand it a framework skill file. If you use Lumos, providing the Lumos skill/style guide makes it generate classes that follow the Lumos naming convention instead of one-off junk.