# docs — index Reference material that would bloat the router. Nothing here is mandatory reading on session start; open the file whose subsystem your task touches. | Path | Purpose | |------|---------| | [`ai/`](ai/index.md) | Subsystem truth for the AI guide — one file per subsystem, routed from [`ai.md`](../ai.md) | | `ytLlive-preview.jpg` | Preview screenshot used by [`README.md`](../README.md) | See [`schema.md`](../schema.md) for the memory-map conventions.