PINNED — the exact trees this book quotes

This book is written against pinned revisions. When the trees move, the book does not silently follow; a re-pin is an explicit event.

Muser (the engine this book explains)

Repository: the muser repository (<muser-checkout> at pin time)
Pinned commit: 6d0807da975d3628f874df6b36ac9cc2af3723f2 (feat(dashboard): live chat pane with token streaming)
Branch: main
Tree state at pin: clean (working tree == HEAD), so quoting from the working tree is quoting the pin.
Model target: the pinned Muse Glimmer GGUF (identity validated at startup: revision, byte size, SHA-256 — see docs/muser-architecture.md).
Compatibility reference: llama.cpp commit 89e0aa6fd362617d9073e0dafc18e41241521572.
Rules inherited from the Muser repo while working against it: the release lock is authoritative (this book creates no seals, tags, or candidates); evidence is read from muser-receipt:// (append-only — never written by book work); files under ~/.muser/**/secrets and pki dirs are never read; scripts/accelerator_safe.py gates any accelerator run (book work is read-only, so none are needed).

Repository: the private ferrite-rs research repository
Path: inference-book/
Identity: “The Inference Book on Apple Metal — How Ferrite runs Qwen2.5-1.5B, one kernel at a time” (25 chapters + appendices, STYLE contract, SUMMARY.md).
Use in this book: structural and pedagogical lineage. Ferrite measurements (A18 Pro, 8 GB, 45.95 GB/s ceiling, 33.20 tok/s tg128, …) are ancestor context and are always labeled as such, per the Muser launch claims register’s [precedent-7B-ferrite] discipline (docs/launch-claims.md ground rules).

cd <muser-checkout> && git rev-parse HEAD must print the pinned commit. If it does not, quotes in this book may have drifted — check git diff <pin>..HEAD -- <quoted path> before trusting a file:line.
Every [crates/...:LINE] tag in a chapter must resolve to the quoted content at the pin.
Every number must carry a tag that resolves to a doc, a ledger entry, or a receipt path under muser-receipt://.