Sam Altman’s company has finally solved its supply problem. No, we’re not talking about OpenAI and its insatiable appetite for more compute. We’re talking about Oklo, the Altman-backed nuclear fission company, which has struck a multiyear purchasing agreement with Centrus Energy for domestic high-assay low-enriched uranium (HALEU), the difficult-to-source fuel for its new-age nuclear reactors. Nuke Box Fever Data center fever has nuclear fission…