2 A Field Map and How to Read This Book
What is settled and what is contested, how the chapters interlock, and how this book positions against the existing comprehensive titles.
NoteStatus
Outline. Source: new. See INTEGRATION.md.
2.1 Problem
2.2 Design
2.3 Evolution
2.4 Trade-offs
2.5 Implementation
2.6 Further reading
NoteTODO
Establish the seminal, frontier, and primary-source anchors for this chapter.