# HyperTwist Phase 6R-I roice3/Magic120Cell runtime profile and persistence implementation packet

Created on `2026-05-22`

## Status

- first-party HyperTwist packet
- bounded permissive `Phase 6R-I` implementation slice

## Purpose

This packet lands the first narrower bounded slice from the retained `roice3/Magic120Cell`
hyper-engine row.

The landed slice is:

- first-party dedicated `120-cell` family runtime-profile and persistence boundary

It is not:

- a broad non-Euclidean platform packet
- a renderer or viewer-shell packet
- a generic topology packet
- a generic notation or replay packet
- a `MagicCube5D` widening packet

## Current authority basis

This implementation packet stands on:

- `docs/REPO_LICENSE_TRACKING.md`
- `docs/ops/HYPERTWIST_CROSS_LANE_AUTHORITY_HIERARCHY_AND_RECONCILIATION_2026-05-20.md`
- `docs/arch/HYPERTWIST_PHASE6R_I_MAGIC120CELL_RUNTIME_PROFILE_AND_PERSISTENCE_PREPARATION_PACKET_2026-05-22.md`

The retained owner remains:

- `roice3/Magic120Cell`

The top-level runtime-anchor owner does not change here:

- first-party HyperTwist with the retained `Hyperspeedcube` runtime anchor remains the broader
  runtime owner
- this packet keeps `roice3/Magic120Cell` bounded to the narrower `A1 / R1 / F2` dedicated
  `120-cell` runtime-profile and persistence slice

## Landed scope

The current code now owns a retained `Magic120Cell` contract through:

- a dedicated first-party `UHyperTwistTrainingMagic120CellLibrary`
- retained package references for:
  - family core
  - settings defaults
  - loader
  - twist encoding
  - twist-history ledger
- one bounded runtime-profile contract for:
  - puzzle-type modes
  - symmetry-scoped visibility groups
  - center-cell recentering and visibility guard rails
- one bounded persistence boundary for:
  - `Magic120Cell Version1` header semantics
  - scramble-cache semantics
  - twist-hash and undo/redo history caveats
- one bounded donor-attribution boundary
- runtime-library accessors and package-checklist export through:
  - `UHyperTwistTrainingRuntimeLibrary`
- focused automation coverage in:
  - `HyperTwistMagic120CellPhase6RIRuntimeProfileContractTest.cpp`

## Why this is still intentionally bounded

This packet lands a dedicated family-specific donor seam, but it does not widen into neighboring
retained families.

Still deferred:

- WinForms/OpenGL host-shell ownership
- broad renderer ownership
- generic non-Euclidean topology ownership
- generic notation or replay ownership
- broad interaction-shell widening
- `MagicCube5D` deepening

## Validation

Build validation:

- `Build.bat UnrealHyperTwistEditor Win64 Development -Project='C:\HyperTwist\UnrealHyperTwist\UnrealHyperTwist.uproject' -WaitMutex -NoHotReloadFromIDE`

Focused automation validation:

- `Automation RunTests HyperTwist.Permissive.Magic120Cell.Phase6R.I`

Regression automation validation:

- `Automation RunTests HyperTwist.Permissive.MagicTile.Phase6R.D`
- `Automation RunTests HyperTwist.Permissive.Hyperspeedcube.Phase6R.A`
- `Automation RunTests HyperTwist.CleanRoom.CubeDesk`

Expected covered tests:

- `RuntimeProfile`
- `PersistenceBoundary`
- `PackageChecklist`
- existing `MagicTile`, `Hyperspeedcube`, and `CubeDesk` regression suites

## Queue effect

This packet consumes the current `Phase 6R-I` implementation slice.

`roice3/Magic120Cell` remains only partially incorporated:

- landed now:
  - dedicated `120-cell` family runtime profile
  - puzzle-type mode taxonomy
  - symmetry and visibility group taxonomy
  - persistence header and scramble-cache boundary
  - twist-history caveat capture
  - direct-donor attribution boundary
- still deferred:
  - WinForms/OpenGL host shell
  - broad renderer ownership
  - generic topology ownership
  - generic notation or replay ownership
  - broad interaction-shell widening

The next clean move is:

- source-backed `Phase 6R-J` `roice3/MagicCube5D` preparation/control pass

Keep the future sequencing guards visible:

- `roice3/Magic120Cell`
  - keep the landed slice bounded to the dedicated `120-cell` family lane rather than a broad
    non-Euclidean shell
- `roice3/MagicCube5D`
  - keep the code-license judgment anchored on the mirrored `MIT` repo while preserving the older
    zip only as provenance context
