Brain Persistent memory across sessions. Obsidian vault at . The brain is the foundation of the entire workflow — every agent, skill, and session reads it. Low-quality or speculative content degrades everything downstream. Before adding anything, ask: "Does this genuinely improve how the system operates?" If the answer isn't a clear yes, don't write it. Before Writing Read first. Then read the relevant entrypoint for your topic: - for principle updates - for plan-related notes For directories without a dedicated index file yet ( , ), scan nearby files directly and edit an existing note when p…