# CLAUDE.md

**Document Version:** v3 (independent, incremented on structural changes)

## First-time setup

**At the start of every new session, read all of the following files before doing anything else:**

- `CLAUDE.md` (this file)
- `README.md`
- `AGENTS.md`
- `PROJECT.md`
- `CHANGELOG.md`
- `DESIGN_DOCUMENT*.md` — one per language used in the project (`DESIGN_DOCUMENT_PYTHON.md`, `DESIGN_DOCUMENT_PYTHON_MODULE.md`, `DESIGN_DOCUMENT_RUST.md`, `DESIGN_DOCUMENT_RUST_LIB.md`, `DESIGN_DOCUMENT_GODOT.md`)