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#000070: rewrite ticket as directive forward-spec (Joseph6 as worked example)

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Per fox 2026-06-01: same treatment as #000071 — replace the
review-archaeology structure with what we SHOULD grow. Ticket goes
from 978 lines (original Anchor6 §§1-8 design log + dav1d-review §0
retrofit) to 498 lines of directive spec. **Joseph6 stays as the
first registered example grammar** per fox's note — concrete enough
that an implementer sees what a WorldDimensionGrammar looks like
end-to-end, not abstract enough to lose its load-bearing role.

What changed in shape:
  Before: §0 dav1d verdict retrofit + §§1-8 archaeology of the
          original Anchor6 spec being reviewed (validate seed source,
          segmentation method, mapper choice — all decisions long
          since made).
  After:  §1-13 forward spec. Goal · Axis split · Hard constraints
          (all phases) · AnchorN primitive · WorldDimensionGrammar ·
          Quantization mappers (with uint256-H₁ + no-SO(3) corrections
          documented inline) · π*_w_object canonicalizer with
          four-identity-hash record · **Joseph6 as worked example** ·
          Phase 1 deliverables (9 items) · Pre-review empirical
          bench preserved as §7 · Phase 2/3 deferred · Open questions
          (3 remaining; 5 closed by bench, 4 by dav1d's review) ·
          Cross-references · Five-step alignment · One-line review
          history at the bottom.

What changed in content: nothing material. The corrected spec from
the prior §0 retrofit IS the body now. The original Anchor6 design
log is no longer inlined — git history preserves it at commit
`862662b` (pre-rewrite tip); readers who want the rejection-by-
rejection detail go to
docs/dav1d-reviews/000070-spatial-anchor-pi-w-object--2026-06-01.txt.

Critical technical corrections preserved inline (not as "what was
fixed", but as the directive answer):
  - §3.1: uint256 for H₁ position (octree depth >8 entropy
    preservation)
  - §3.2: rename `map_rotation_so3` → `map_rotation_euler_ypr` (no
    SO(3) overclaim — quantized Euler is not SO(3) coverage)
  - §4: WorldObjectRecord carries all four identity hashes
    (grammar_hash, axiom_pack_hash, manifest_hash, seed_hash) for
    replayability
  - §5: Joseph6 ships as one example grammar; future grammars
    register through the same mechanism

TICKETS.md index row also rewritten in directive voice.

doc_counts tests still pass.
This commit is contained in:
russell@unturf.com 2026-06-01 07:24:17 -04:00
parent 9e4645f60e
commit cb9b57eb80
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