# Raw sources — Immutable reference data

This directory contains raw reference data (links, books, standards, RFCs) from which the knowledge base is built.

**Rules:**
- Content is **immutable** — once added, it does not change (append only)
- A source is tagged `[done]` if it has already been processed into the KB
- Each area has its own `sources.md`

## Structure

```
sources/
├── README.md
├── cloud/
├── networking/
├── monitoring/
├── cicd/
├── databases/
└── infrastructure/
```