Lat.md: Agent Lattice: a knowledge graph for your codebase, written in Markdown

lat.md is a structured knowledge graph system for codebases, designed to replace the scaling limitations of flat AGENTS.md files. It organizes architecture and domain knowledge into interconnected Markdown files with wiki-style links, source code annotations, and a CLI that validates link integrity and supports exact/fuzzy/semantic search. The tool is explicitly designed to give AI coding agents reliable, queryable context rather than forcing them to hallucinate from a monolithic document.