# HyperTwist Phase 6R-L HactarCE/Hyperspeedcube replay verification implementation packet

Created on `2026-05-22`

## Status

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

## Purpose

This packet lands the next narrower bounded slice from the retained `HactarCE/Hyperspeedcube`
runtime-anchor row.

The landed slice is:

- first-party hyper replay verification and solve-proof diagnostics boundary

It is not:

- a whole `Hyperspeedcube` runtime transplant
- a puzzle-definition DSL packet
- a stats-shape packet
- a donor replay UI shell packet
- a donor network-service ownership 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_L_HYPERSPEEDCUBE_REPLAY_VERIFICATION_PREPARATION_PACKET_2026-05-22.md`

The retained owner remains:

- `HactarCE/Hyperspeedcube`

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 `HactarCE/Hyperspeedcube` bounded to the narrower `A1 / R1 / F2` replay
  verification and solve-proof diagnostics slice

## Landed scope

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

- the existing first-party `UHyperTwistTrainingHyperspeedcubeLibrary`
- retained package references for:
  - log verifier
  - verification result types
  - replay simulation
  - replay-event taxonomy
- one bounded replay-verification contract for:
  - full vs quick verification options
  - scramble seed, solved-state, and notation-parse checks
  - randomness-beacon and completion-timestamp proof routing
  - replay reconstruction and single-session duration eligibility
- one bounded replay-verification boundary for:
  - replay-event taxonomy
  - grouped twist reconstruction
  - used-filters and used-macros diagnostics
  - blindsolve validity and proof-caveat reporting
- updated donor-attribution boundary
- runtime-library accessors and package-checklist export through:
  - `UHyperTwistTrainingRuntimeLibrary`
- focused automation coverage in:
  - `HyperTwistHyperspeedcubePhase6RLReplayVerificationContractTest.cpp`

## Why this is still intentionally bounded

This packet lands the retained replay-verification seam, but it does not widen into neighboring
retained families or broader product ownership.

Still deferred:

- puzzle-definition DSL parsing or authoring
- stats-shape and solve-record ownership
- donor replay UI shell ownership
- donor desktop shell and host-network-service ownership
- broader `Hyperspeedcube` runtime-anchor widening beyond the next bounded packet

## Validation

Build validation:

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

Focused automation validation:

- `Automation RunTests HyperTwist.Permissive.Hyperspeedcube.Phase6R.L`

Regression automation validation:

- `Automation RunTests HyperTwist.Permissive.MagicCube5D.Phase6R.J`
- `Automation RunTests HyperTwist.Permissive.Magic120Cell.Phase6R.I`
- `Automation RunTests HyperTwist.Permissive.MagicTile.Phase6R.D`
- `Automation RunTests HyperTwist.Permissive.Hyperspeedcube.Phase6R.A`
- `Automation RunTests HyperTwist.CleanRoom.CubeDesk`

Expected covered tests:

- `ReplayVerificationContract`
- `ReplayVerificationBoundary`
- `PackageChecklist`
- existing `MagicCube5D`, `Magic120Cell`, `MagicTile`, `Hyperspeedcube`, and `CubeDesk`
  regression suites

## Queue effect

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

`HactarCE/Hyperspeedcube` remains only partially incorporated:

- landed now:
  - puzzle catalog contract
  - notation contract
  - replay-log serialization boundary
  - replay verification boundary
- still deferred:
  - puzzle-definition DSL authoring
  - stats-shape

The next clean move is:

- source-backed `Phase 6R-M` `HactarCE/Hyperspeedcube` stats-shape and solve-record
  preparation/control pass

Keep the future sequencing guards visible:

- keep the next widening slice on stats-shape and solve-record rather than reopening DSL
  authoring in the same packet
- keep generic hyper-runtime ownership first-party and broader than this donor slice
