Static-assert the machine is little endian.

Someone's LLM will comment out that line the moment it causes a build failure

	▲	thrtythreeforty 39 minutes ago \| parent \| next [-]
		Then they get to keep both pieces!
	▲	edflsafoiewq 2 hours ago \| parent \| prev [-]
		Oh brave new world, that has such arguments in it!