LLM Wiki — Second Brain for Claude Code + Obsidian Inspired by Andrej Karpathy's LLM Wiki pattern (gist). This skill turns Claude Code (or any agent CLI) into a disciplined wiki maintainer that incrementally builds and maintains a persistent, interlinked Obsidian vault as you feed it sources. The knowledge compounds — cross-references, contradictions, and synthesis are already there when you query. Core principle Most LLM+docs workflows are RAG : retrieve fragments at query time, synthesize from scratch, forget. The wiki is compounding : sources are read once, integrated into a persistent mar…