Confirm simulator duplicate retirement

docs/HYPERTWIST_LIGHTWEIGHT_CLASSIC_CUBE_SIMULATOR_DUPLICATE_RETIREMENT_RECONCILIATION_2026-05-27.md

@@ -0,0 +1,171 @@
+# HyperTwist Lightweight Classic-Cube Simulator Duplicate Retirement Reconciliation - 2026-05-27
+
+## Status
+
+This document is the source-backed reconciliation note for the current
+lightweight classic-cube simulator comparison row across:
+
+- `MathewKJ2048/Rubiks-cube-simulator`
+- the current first-party replay, training-history, and bounded
+  classic-cube explanation surfaces
+- the already-retained `AviKaufman/Rubix-cube-trainer`, `alinen/cube`, and
+  `vwcwong/CubeSim` rows
+
+It answers one narrow question:
+
+- does the current `MathewKJ2048/Rubiks-cube-simulator` source require
+  reopening already landed HyperTwist packets or keeping any active retained
+  clean-room slice before a future simulator-adjacent packet is considered
+
+Result:
+
+- no product-code reopening is required
+- no surviving unique retained slice remains
+- yes selective authority backfill is required so the older scrubbed
+  `Model A` note is explicitly historical only rather than a live clean-room
+  candidate
+
+## Source basis
+
+- `C:\HyperTwist\docs\HYPERTWIST_PHASE_0R_PACKET_0R_E_EVALUATION_2026-05-13.md`
+- `C:\HyperTwist\docs\REPO_LICENSE_TRACKING.md`
+- `C:\Workspaces\HyperTwist\repos.manifest.json`
+- `C:\Workspaces\HyperTwist\clean-room-specs\mathewkj2048-rubiks-cube-simulator.model-a.md`
+- `C:\Workspaces\HyperTwist\mirrors\restrictive\MathewKJ2048\Rubiks-cube-simulator\README.md`
+- `C:\Workspaces\HyperTwist\mirrors\restrictive\MathewKJ2048\Rubiks-cube-simulator\src\Main.java`
+- `C:\Workspaces\HyperTwist\mirrors\restrictive\MathewKJ2048\Rubiks-cube-simulator\src\GUI_Cube.java`
+- `C:\Workspaces\HyperTwist\mirrors\restrictive\MathewKJ2048\Rubiks-cube-simulator\src\Cube_solver.java`
+- `C:\Workspaces\HyperTwist\mirrors\restrictive\MathewKJ2048\Rubiks-cube-simulator\src\cube\Cube.java`
+- current first-party runtime and packet authority under:
+  - `C:\HyperTwist\UnrealHyperTwist\Source\UnrealHyperTwist`
+  - `C:\HyperTwist\docs\ops\HYPERTWIST_IMPLEMENTATION_PHASE_1_KICKOFF.md`
+
+## Slice-local verdict
+
+| Slice | Primary authority | Secondary value kept | Route | Width | Result |
+| --- | --- | --- | --- | --- | --- |
+| Lightweight move grammar, visible move history, timed step playback, and beginner staged-solve simulator shell | current first-party replay/history surfaces plus the already-retained `AviKaufman`, `alinen`, and `CubeSim` rows | historical comparison only | no active route; reference-only custody | none active | discard remains correct and no active retained slice survives |
+
+## Why no product-code reopening is required
+
+### `MathewKJ2048/Rubiks-cube-simulator`
+
+The donor does expose a compact beginner simulator surface:
+
+- lightweight text and button move-command grammar
+- user-visible move-history logging
+- timed solve-step playback
+- compact simulator state mutation
+- beginner layer-by-layer solve presentation
+
+Those qualities are real, but they are not unique enough to survive as an
+active retained owner slice.
+
+The current source also confirms the weakness of the row:
+
+- GUI, playback, command entry, and beginner-solver logic are tightly coupled
+- the architecture is monolithic compared with stronger retained rows
+- the beginner-solver value is narrower and less readable than the stronger
+  retained pedagogy and state/history benchmarks
+
+### Current first-party and retained benchmark surfaces
+
+HyperTwist already has stronger live or retained owners for the only meaningful
+ideas surfaced by this row:
+
+- current first-party replay/history surfaces already own the live move-history
+  and playback lane
+- `AviKaufman/Rubix-cube-trainer` remains the stronger guided-pedagogy and
+  stepwise tutorial benchmark
+- `alinen/cube` remains the stronger task-planner and focus-playback benchmark
+- `vwcwong/CubeSim` remains the clearer renderer-independent state/history and
+  beginner-solver benchmark
+
+After that partition, no exact sub-slice remains that this repo owns more
+strongly than the current retained set or the live first-party product.
+
+## Selective backfill result
+
+### Earlier packet reopened
+
+- `C:\HyperTwist\docs\HYPERTWIST_PHASE_0R_PACKET_0R_E_EVALUATION_2026-05-13.md`
+
+### Earlier standing note reopened
+
+- `C:\Workspaces\HyperTwist\clean-room-specs\mathewkj2048-rubiks-cube-simulator.model-a.md`
+
+### Manifest row reopened
+
+- `C:\Workspaces\HyperTwist\repos.manifest.json`
+
+### Reason
+
+The original `0R-E` discard decision remained correct, but the older scrubbed
+note was stale because it still read like a future clean-room candidate. This
+pass closes that gap.
+
+### Change class
+
+- repo-local extraction did not change
+- discard interpretation was confirmed rather than reversed
+- dependent canon was sharpened so the row stays historical only
+- no product-code change occurred
+
+### What remained valid
+
+- the original `0R-E` decision to discard this row from the active retained set
+  remained valid
+- the restrictive `GPL-3.0` posture remained valid
+- the manifest's inactive `reference-only` posture remained valid
+
+### What changed
+
+The dependent canon now makes the exact inactive role explicit:
+
+- keep this row only as historical comparison context
+- do not treat the scrubbed `Model A` note as active implementation authority
+- keep live playback/history ownership with current first-party replay surfaces
+- keep retained pedagogy, planner, and readable beginner-solver benchmark
+  ownership with `AviKaufman`, `alinen`, and `CubeSim`
+
+## Propagation result
+
+### Feature registry
+
+No change was needed.
+
+No active or retained feature slice survived this pass, so no feature-registry
+entry needed to be added or sharpened.
+
+### Cross-lane doctrine
+
+No doctrine wording change was needed.
+
+This pass applied the existing `A/R/F` hierarchy; it did not change the
+hierarchy rules themselves.
+
+### Skillization
+
+No doctrine or `SKILLS.md` change was needed.
+
+This pass did not create or reopen any command or skill surface.
+
+### Legal evidence
+
+No license-status or mirror-custody change occurred.
+
+The repo-row tracker, manifest row, and scrubbed historical note were sharpened
+instead.
+
+## Operational answer
+
+Before any future classic-cube helper, lesson, or simulator-adjacent packet is
+considered, the correct move was this evaluation and selective backfill pass
+first.
+
+After this pass:
+
+- do not reopen product code from `Phase 6R-AG` onward because of this row
+- do not schedule donor, clean-room, or implementation work from this row
+- use this row only as historical comparison context unless future authority
+  explicitly reopens it

docs/HYPERTWIST_PHASE_0R_PACKET_0R_E_EVALUATION_2026-05-13.md

@@ -407,6 +407,14 @@ Integration call:
 
 - discard from the active HyperTwist retained set
 - do not schedule further clean-room or direct work from this row
+- current `2026-05-27` reconciliation overlay:
+  - repo-local extraction unchanged
+  - source-backed comparison confirmed the discard remains correct
+  - no surviving unique retained slice remains after the current first-party
+    replay/history family plus the retained `AviKaufman`, `alinen`, and
+    `CubeSim` partition
+  - treat the older scrubbed `Model A` note as historical only, not as active
+    clean-room authority
 
 ### `ShellPuppy/RCube`
 

docs/REPO_LICENSE_TRACKING.md

@@ -1460,6 +1460,14 @@ Approved working posture:
 
 - do not continue active clean-room planning from this row
 - treat any preexisting scrubbed handoff material for this repo as historical only
+- current `2026-05-27` reconciliation overlay:
+  - repo-local extraction unchanged
+  - source-backed comparison confirmed the discard remains correct
+  - no surviving unique retained slice remains after comparison against the
+    current first-party replay/history family and the retained `AviKaufman`,
+    `alinen`, and `CubeSim` rows
+  - do not interpret the scrubbed `Model A` note as active implementation
+    authority
 - prefer `AviKaufman/Rubix-cube-trainer`, `alinen/cube`, and `vwcwong/CubeSim` for the surviving pedagogy/planner/history benchmark surfaces
 
 ### `ShellPuppy/RCube`