Karpathy's Obsidian Wiki Broke at 100 Articles - RAG Fixed It

When your note system gets smart enough to confuse itself. When Andrej Karpathy shared his LLM wiki workflow, I built one the same week. Obsidian vault, raw documents, Claude Code compiling everything into a structured wiki with backlinks and cross-references. I wrote about it, people loved it, and I kept feeding the beast. Then somewhere around article 80, things started breaking. Not breaking in an obvious way. Breaking in a way where Claude would confidently tell me something from my own wiki