The staleness problem mentioned here is real. For agentic systems, a markdown-based DAG of your codebase is more practical than a traditional graph because agents work within context windows. You can selectively load relevant parts without needing a complex query engine. The key is making updates low-friction -- maybe a pre-commit hook or CI job that refreshes stale nodes.

This is what lat is doing. `lat init` would install hooks to double check that Claude/Codex/OpenCode update lat.md when they finish the work.