# docs — index Reference material that is too large for [`ai.md`](../ai.md)'s front half. Nothing here is mandatory reading on session start; open the file whose subsystem your task touches. | Path | Purpose | |------|---------| | [`ai/`](ai/index.md) | Split-out subsystems of the AI guide — each started life verbatim inside `ai.md`, which keeps a short invariant stub pointing here | | `ytLlive-preview.jpg` | Preview screenshot used by [`README.md`](../README.md) | See [`schema.md`](../schema.md) for the memory-map conventions.