We recently simplified the docs for hems configuration. However, the new text doesn't seem to match our implementation. Load management is not auto-create. User has to configure it for HEMS to work. We should update the implementation (or revert the docs change).

@premultiply @andig Ihr hattet gesagt, dass eine Lastmanagement Konfiguration nicht erforderlich ist weil HEMS das automatisch macht. Das scheint nicht der Fall zu sein. Ich probiere gerade HEMS einzurichten und bekommen:

[main  ] FATAL 2025/12/10 18:58:16 hems failed configuring hems: hems requires load management- please configure root circuit

Originally posted by @naltatis in #927