Scrollcase packs an entire environment and the code it runs — like an LLM or a scientific model — into a single, self-contained, portable and signed archive: a box. A box declares one runtime, python, node or native. All three are built, signed, verified and run the same way. You give that box to someone else. They unpack it and run it — that's it! Nothing to install: no interpreter, no pip install, no compiler, no Docker, no dependencies to maintain.