How is the AI OS series that unlocks at Level 3? Has anyone been able to implement the ideas in their own system yet? Iโve been working on a โsecond brainโ for LLMs since December, and I keep hitting the same wall: efficiency. Iโve tried file-based approaches, RAG, and even a semi-custom knowledge graph. They all get part of the way there, but none of them feel quite right once you start dealing with real-world files and services. The big issue for me is ingestion. I want to connect local files, Dropbox, Slack, Teams, SharePoint, etc. without copying everything into another system or creating a mess of duplicates. It feels like we still need better local-first infrastructure before this can be properly optimized. Has anyone found a setup that actually works well? Does the AI OS course address any of that?