Backfill shared-assets reference provenance

docs/HT_REPO_INCORPORATION_AUDIT_2026-05-11.md

@@ -386,15 +386,16 @@ additional live non-71 surfaces are now complete, including `SpeedCubeDB`,
 
 The retained-web-content reference side, the `screenpipe/screenpipe`
 capture-history reference side, the `remotion-dev/remotion` media-export
-reference side, and the `PostHog/posthog` control-plane reference side are now
-explicit.
+reference side, the `PostHog/posthog` control-plane reference side, and the
+`google/model-viewer/packages/shared-assets` fixture/provenance reference side
+are now explicit.
 
 The next clean bounded move is a source-backed pass on the remaining
 repo-backed reference-incorporation families whose hierarchy or canon
 follow-through is still only implicit in
 `hypertwist-reference-incorporation-targets.json`, starting with
-`google/model-viewer/packages/shared-assets` if you want the adjacent
-boundary-sensitive shared-assets provenance side closed to the same standard.
+`cutelyaware/magiccube4d` if you want the adjacent boundary-sensitive legacy
+`4D` reference side closed to the same standard.
 
 For the readable all-rows follow-up board that pairs this audit with the reset schedule, use:
 

docs/HYPERTWIST_SHARED_ASSETS_REFERENCE_INCORPORATION_PROVENANCE_BOARD_2026-05-27.md

@@ -0,0 +1,137 @@
+# HyperTwist shared-assets Reference Incorporation Provenance Board - 2026-05-27
+
+## Status
+
+This document is the source-backed provenance and hierarchy note for the live
+repo-backed reference-incorporation side currently materialized from
+`google/model-viewer/packages/shared-assets`.
+
+It closes the source-specific reference side that remained implicit after the
+landed `Phase 4R-C` packet and the broader live-lane and mixed-asset-boundary
+audits.
+
+It answers one narrow question:
+
+- do the live `google/model-viewer/packages/shared-assets` reference targets
+  reopen already landed first-party shared-assets allowlist, provenance, and
+  refresh implementation, or do they instead need a reference-side
+  provenance-board and canon backfill
+
+Result:
+
+- no product-code reopening is required
+- yes reference-side provenance-board and feature-canon backfill is required
+
+## Source basis
+
+- `C:\HyperTwist\docs\HT_REPO_INCORPORATION_AUDIT_2026-05-11.md`
+- `C:\HyperTwist\docs\HYPERTWIST_PHASE_4R_PACKET_4R_C_SHARED_ASSETS_ALLOWLIST_IMPLEMENTATION_2026-05-13.md`
+- `C:\HyperTwist\docs\HYPERTWIST_LIVE_LANES_SOURCE_AND_PRESERVATION_AUDIT_2026-05-13.md`
+- `C:\HyperTwist\docs\REPO_LICENSE_TRACKING.md`
+- `C:\HyperTwist\docs\v6_5_deep_manual_pack\HyperTwist\FEATURE_REGISTRY.md`
+- `C:\HyperTwist\UnrealHyperTwist\Content\HyperTwistTraining\MaterializedCatalog\hypertwist-reference-incorporation-targets.json`
+- `C:\HyperTwist\UnrealHyperTwist\Content\HyperTwistTraining\MaterializedCatalog\raw-extracts\google-model-viewer-shared-assets-reference-pages.jsonl`
+
+## Counts confirmed from current first-party materialization
+
+Current live `google/model-viewer/packages/shared-assets`
+reference-incorporation targets:
+
+- `5` total rewritten reference targets
+- all `5` are under `Browser Viewer Shared Asset Fixtures`
+- all `5` stay inside the already-landed `Phase 4R-C` bounded lane
+
+Exact surfaces:
+
+1. `reference/google-model-viewer-shared-assets-reference-page-allowlist`
+   - `SurfaceType`: `viewer-shared-asset-reference`
+   - `IncorporationChannel`: `fixture-allowlist`
+   - `TargetAssetFamily`: `qa-fixture-note`
+2. `reference/google-model-viewer-shared-assets-lighting-reference-page-cc0-matrix`
+   - `SurfaceType`: `viewer-shared-asset-lighting-reference`
+   - `IncorporationChannel`: `environment-fixture-matrix`
+   - `TargetAssetFamily`: `environment-fixture-note`
+3. `reference/google-model-viewer-shared-assets-provenance-reference-page-review-boundary`
+   - `SurfaceType`: `viewer-shared-asset-provenance-reference`
+   - `IncorporationChannel`: `shipping-boundary`
+   - `TargetAssetFamily`: `compliance-boundary-note`
+4. `reference/google-model-viewer-shared-assets-refresh-reference-page-pattern`
+   - `SurfaceType`: `viewer-shared-asset-refresh-reference`
+   - `IncorporationChannel`: `fixture-refresh-pattern`
+   - `TargetAssetFamily`: `refresh-pattern-note`
+5. `reference/google-model-viewer-shared-assets-geometry-reference-page-smoke-tests`
+   - `SurfaceType`: `viewer-shared-asset-geometry-reference`
+   - `IncorporationChannel`: `geometry-smoke-test-boundary`
+   - `TargetAssetFamily`: `geometry-fixture-note`
+
+Important adjacent fact:
+
+- all five targets preserve the explicit mixed per-asset review, notice, and
+  local-only boundary already enforced by the landed lane
+
+## Slice-local verdict
+
+| Slice | Primary authority | Secondary value kept | Result |
+|---|---|---|---|
+| First-party shared-assets allowlist, provenance, and refresh implementation | first-party current code plus landed `Phase 4R-C` packet | retained `google/model-viewer/packages/shared-assets` reference targets stay subordinate provenance-grounding surfaces | unchanged live implementation owner |
+| Rewritten allowlist, lighting-fixture, provenance-boundary, refresh-pattern, and geometry-fixture grounding | `google/model-viewer/packages/shared-assets` retained boundary-sensitive lane | factual fixture-family, shipping-boundary, lighting-parity, refresh, and geometry smoke-test semantics are preserved while prose remains first-party | unchanged retained reference-grounding surface beneath first-party contracts |
+| Mixed per-asset compliance and shipping-boundary grounding | `google/model-viewer/packages/shared-assets` retained boundary-sensitive lane | the review-required, notice-bound, and excluded fixture split stays explicit in first-party compliance notes | unchanged bounded compliance-grounding surface |
+
+## Why no product-code reopening is required
+
+The live surfaces here are already rewritten first-party targets, not copied
+donor docs, donor demo UI, or blanket donor asset bundles.
+
+The checked targets explicitly require:
+
+- preserving factual allowlist, environment-fixture, provenance-boundary,
+  refresh-pattern, and geometry smoke-test semantics
+- rewriting donor wording, donor docs/demo framing, and any broader bundle or
+  product-shell assumptions
+
+That means the retained surfaces are provenance and factual grounding, not
+donor shell ownership.
+
+So this pass does not reopen:
+
+- the closed `Phase 4R-C` first-party shared-assets allowlist lane
+- the broader `google/model-viewer` browser viewer owner lane
+- any blanket mixed-asset shipping claim
+- any erosion of review-only, notice-bound, or local-only boundaries
+
+## Current exact grounded role
+
+`google/model-viewer/packages/shared-assets` currently grounds five live
+rewritten first-party contract/reference targets for
+`Browser Viewer Shared Asset Fixtures`:
+
+- the fixture allowlist split
+- the `CC0` environment-fixture matrix
+- the review-required and restricted provenance boundary
+- the fixture refresh and attribution-recheck pattern
+- the contributed geometry smoke-test boundary
+
+These targets preserve bounded fixture and provenance semantics while keeping
+all surfaced prose and bundle framing first-party.
+
+## Backfill result
+
+### Earlier incorporation audit reopened
+
+- `C:\HyperTwist\docs\HT_REPO_INCORPORATION_AUDIT_2026-05-11.md`
+
+### Feature canon reopened
+
+- `C:\HyperTwist\docs\v6_5_deep_manual_pack\HyperTwist\FEATURE_REGISTRY.md`
+
+## Final call
+
+The live `google/model-viewer/packages/shared-assets`
+reference-incorporation side is now explicit:
+
+- `5` rewritten first-party contract/reference targets
+- all `5` remain inside the landed `Phase 4R-C` shared-assets lane
+- the mixed per-asset review, notice, and local-only boundary stays explicit
+
+This closes the `google/model-viewer/packages/shared-assets` reference side
+without reopening product code.

docs/v6_5_deep_manual_pack/HyperTwist/FEATURE_REGISTRY.md

@@ -153,6 +153,7 @@ repo.
 | Seeded competition scramble workflow and lightweight scramble-operator shell adjuncts | Deep-source grounded retained | `cubing/cubing.js` retained lane + `cubing/mark3` / `cubing/scramble.cubing.net` successor evaluation | Source-backed successor surfaces sharpen competition-spec workflow and operator-shell expectations above the retained scramble and visualization seams, but they do not displace `cubing/cubing.js` or `cubing/twisty.js`; `scramble-display` remains comparison-only. |
 | Replay shell and timeline | Implemented now | landed `cubing/twisty.js` bounded packets | First-party `HyperTwistSimulation` now owns the bounded replay-player shell, cursor/timeline transport, adapter/bootstrap, and local visualization or fallback presentation contract grounded in `cubing/twisty.js`; classic-cubing semantics remain with `cubing/cubing.js`, parser and AST ownership remain with `cubing/alg.js`, and broader browser support ownership stays with the landed browser lanes. |
 | Media-export, embedded-playback, and replay-explainer reference grounding | Implemented now | `remotion-dev/remotion` retained boundary-sensitive lane + first-party current code | Current live `Media Export and Replay Explainers` reference side includes five rewritten first-party contract/reference targets grounded in `remotion-dev/remotion`: embedded playback, render orchestration, media parser, explainer-studio preview/output registration, and explicit commercial-license/package-split compliance-boundary notes. This does not displace the landed `Phase 4R-F` first-party owner lane, the broader browser/spatial/media adjunct family, or the explicit package-split commercial boundary. |
+| Browser-viewer shared-asset fixture and provenance grounding | Implemented now | `google/model-viewer/packages/shared-assets` retained boundary-sensitive lane + first-party current code | Current live `Browser Viewer Shared Asset Fixtures` reference side includes five rewritten first-party contract/reference targets grounded in `google/model-viewer/packages/shared-assets`: fixture allowlist, `CC0` environment matrix, provenance-boundary review split, fixture-refresh pattern, and contributed geometry smoke-test boundary notes. This does not displace the landed `Phase 4R-C` first-party owner lane, the broader `google/model-viewer` browser viewer lane, or the explicit mixed per-asset review and shipping boundary. |
 | Algorithm/training semantic lane | Implemented now | landed `cubing/alg.js` bounded packets | First-party `HyperTwistAlgorithm/*` now owns the bounded parser, AST, traversal, validation, keyboard-mapping, and share/interchange contract grounded in `cubing/alg.js`; current training-runtime parse/store/serialize usage remains a consumer seam above that owner lane rather than proof that the lane is still open. |
 | Melinda `2x2x2x2` state core and flat teaching projection | Implemented now | landed `HactarCE/2x2x2x2-Scrambler` bounded packets | First-party `HyperTwistCore` now owns the bounded Melinda state legality, parity or handedness and twist validation, move-family application, random-state generation, scramble-packet construction, and flat debug or teaching projection contract grounded in the restrictive lane; broader higher-dimensional runtime ownership remains with adjacent live lanes and `magiccube4d` remains legacy reference context only. |
 | Readable classic-cube state/history and beginner-helper benchmark | Deep-source grounded retained | `vwcwong/CubeSim` retained clean-room benchmark lane | Retained as `A1 + R4 + F2` only for a small renderer-independent classic-cube state/history split, scramble parse or invert behavior, and beginner `LBL` decomposition benchmark for later clean-room lesson/debug/helper use. This does not displace the first-party canonical replay packet, training attempt/solve/review history, or the bounded classic-cube `Phase 6R-Q/R/S` explanation and correction shells. |