Otter Engine Contributor Guide

This book is the contributor-facing guide for Otter's active new engine. It explains how to extend the runtime without copying internals from task files, parked crates, or raw GC adapters.

Use this book for stable contributor workflows and examples. Repository rules for coding agents live in AGENTS.md.

Historical task and ADR files are intentionally excluded from the living docs. When a contributor-facing API stabilizes, its workflow belongs here.

Local Build

Build the book with:

mdbook build docs/book

The docs examples that exercise current GC APIs are backed by Rust tests in crates/otter-gc; run them with the normal task gates:

cargo test -p otter-gc

If mdbook is not installed, install it with normal Rust tooling outside this repository.