# NEXAH A0 Book — Local Reader Proof Milestone

**Date:** `2026-10-09`

**Milestone:** `A0_READER_PROOF_2026-10-09`

**Disposition:** `REVISED_FROZEN_LOCAL_READER_PROOF / INTERNAL / NOT_PUBLIC`

**Operational effect:** `NONE`

## Result

The A0 Book now exists as one coherent eight-chapter guided-reading surface.
It begins with distinction, moves through point, relation, coordinate,
discrete carrier, dynamics, projection and evidence, and returns to one Human
comparison through seven questions.

The proof adds three bounded cultural transitions:

1. **Record / Play** at the entrance: a voice becomes a record through a
   declared cut and can be replayed without becoming the whole source.
2. **Crystal View** in Chapter 06: one locally hosted 3D artifact can be viewed
   from several positions; the change of appearance is illustrative and does
   not replace the chapter's mathematical controls.
3. **Rooms of the Machine** in Chapter 08: a closing atlas relates the book to
   the wider Science Lab without merging its instruments into one mechanism.

The entry surface also makes the Human premise explicit: people reasonably
seek simple answers to complex questions, while a convincing representation
can still be incomplete. A single cultural reference to a *Theory of
Everything* names the largest form of that hope without turning the book into
a TOE proposal, refutation or physical theory.

The revised entry order begins with the bounded Record / Play scene. The
formal `00 · Introduction` then states the book's promise before the
eight-chapter map. The chapter entries are phrased as Human questions, with
their mathematical objects retained as compact subtitles. Book Thesis,
orientation route and repeatable method remain available as deeper reading
after the chapter choice instead of creating additional competing beginnings.

Record / Play is the bounded cultural demonstration of voice, cut, record and
replay that makes the later mathematical route concrete. Both local
GLB viewers expose camera controls, Safari-compatible pointer gestures and a
slow auto-rotation that makes their interactive status visible; user drag or
zoom remains a view change only and does not alter the artifact. The
public-facing header points to `nexah.de`; a separate reciprocal Science
Navigator link is retained as a source-landscape route. Local HTTP review
rewrites only those Navigator routes from the Book server on port `8876` to
the Navigator server on port `8878`, including the LIFE lineage.
Repository-relative `file://` targets remain unchanged.

Human View explanations remain available where abstraction increases. The
book follows the editorial rule `LOOK -> NAME -> TEST -> RETURN`: show the
object first, name the distinction, preserve the source and claim boundary,
then return judgment to the Human.

## Verified package

- eight chapter HTML files plus the entry surface;
- one complementary local Lab instrument;
- one internal Field Notes record;
- two source-bound downloadable GLBs;
- three local poster images;
- vendored `model-viewer` runtime and licence;
- HTML parse, JSON parse, asset existence and GLB SHA-256 verification;
- local browser load for both GLBs and the closing image without runtime
  warnings.

Exact bytes are bound in `MILESTONE_SHA256.txt`. GLB provenance and non-claims
are additionally recorded in `assets/3d/MANIFEST.json`.

## Claim ceiling

This milestone establishes that a bounded internal book proof exists and is
locally readable. It does not establish publication readiness, independent
reader comprehension, Human utility, scientific novelty, a physical mechanism
or a Theory of Everything.

The mathematical statements retain their chapter-level sources and claim
boundaries. Cultural visuals and 3D objects are orientation instruments, not
scientific evidence.

## Successor boundary

No successor is opened by this freeze. Independent reader testing, copy edit,
public release, Navigator admission, website translation, outreach and any
new scientific or software work each require a separate Owner decision.