# HyperTwist Phase 6R-P rubix-cube-solver browser/webcam shell implementation packet

Created on `2026-05-22`

## Status

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

## Purpose

This packet lands the current retained `rubix-cube-solver` browser/webcam shell family:

- first-party classic-cube browser shell profile and browser-shell session-state composition above
  the already landed reconstruction seam

It is not:

- a full `rubix-cube-solver` row transplant
- a broad solve explanation or recommendation packet
- a bundled `twistysim.min.js` redistribution packet
- a generalized solver backend packet
- a `qbr` multilingual shell 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_P_RUBIX_CUBE_SOLVER_BROWSER_WEBCAM_SHELL_PREPARATION_PACKET_2026-05-22.md`

The retained owner remains:

- `vivaansinghvi07/rubix-cube-solver`

The top-level product shell owner does not change here:

- first-party HyperTwist remains the broader recognition-session and product-shell owner
- this packet keeps `vivaansinghvi07/rubix-cube-solver` bounded to the narrower `A1 / R1 / F2`
  browser/webcam shell slice

## Landed scope

The current code now owns a retained `rubix-cube-solver` browser/webcam shell contract through:

- first-party `HyperTwistRecognition` contract types for:
  - browser shell profile definition
  - browser shell session-state readout
  - browser shell profile id on recognition session config
  - preview and commit browser-shell result payloads
- recognition session config defaults for:
  - first-party classic-cube browser shell profile id
  - browser shell profile definition
- first-party preview and commit result shaping for:
  - active browser stage id
  - transport route readiness
  - transport endpoint and capture cadence
  - committed-face count
  - target-face hint
  - snapshot readiness
  - video/manual-edit visibility
  - playback deferred state
- sample contract routing in:
  - `UHyperTwistContractLibrary`
- active subsystem normalization in:
  - `UHyperTwistTrainingSubsystem`
- focused automation coverage in:
  - `HyperTwistRubixCubeSolverPhase6RPBrowserShellContractTest.cpp`

## Why this is still intentionally bounded

This packet lands the bounded browser/webcam shell seam, but it does not widen into neighboring
families or broader ownership.

Still excluded:

- broad solve explanation or recommendation ownership
- bundled `twistysim.min.js` redistribution
- generalized solver backend ownership
- `qbr` multilingual shell ownership
- `qbr` bundled-font redistribution

## Validation

Build validation:

- `C:\Program Files\Epic Games\UE_5.7\Engine\Build\BatchFiles\Build.bat UnrealHyperTwistEditor Win64 Development -Project='C:\HyperTwist\UnrealHyperTwist\UnrealHyperTwist.uproject' -WaitMutex -NoHotReloadFromIDE`

Focused automation validation:

- `C:\Program Files\Epic Games\UE_5.7\Engine\Binaries\Win64\UnrealEditor-Cmd.exe C:\HyperTwist\UnrealHyperTwist\UnrealHyperTwist.uproject -unattended -nop4 -nosplash -NullRHI -log -stdout -FullStdOutLogOutput -AbsLog=C:\HyperTwist\UnrealHyperTwist\Saved\Logs\Phase6R-P-Rubix-Verify.log -ReportExportPath=C:\HyperTwist\UnrealHyperTwist\Saved\AutomationReports\Phase6R-P-Rubix-Verify -ExecCmds="Automation RunTests HyperTwist.Permissive.RubixCubeSolver.Phase6R.P; Quit" -TestExit="Automation Test Queue Empty"`

Regression automation validation:

- `HyperTwist.Permissive.Qbr.Phase6R.O`
- `HyperTwist.Permissive.RubixCubeSolver.Phase6R.C`
- `HyperTwist.Permissive.Hyperspeedcube.Phase6R.N`
- `HyperTwist.CleanRoom.CubeDesk`

Expected covered tests:

- `BrowserShellSessionConfig`
- `BrowserShellPreviewState`
- `BrowserShellCompleteSession`
- existing `qbr`, `rubix-cube-solver`, `Hyperspeedcube`, and `CubeDesk` regression suites

## Queue effect

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

`vivaansinghvi07/rubix-cube-solver` remains partially incorporated:

- landed now:
  - committed-face reconstruction session
  - face-vote replacement ledger
  - final classic-net shaping above aggregated committed faces
  - browser/webcam shell profile and browser-shell session-state composition
- still deferred:
  - broad solve explanation or recommendation shell
  - bundled `twistysim.min.js` redistribution

The next clean move is:

- source-backed `Phase 6R-Q` `vivaansinghvi07/rubix-cube-solver` solve
  explanation/recommendation preparation/control pass

Keep the future sequencing guard visible:

- do not copy or redistribute `frontend/lib/twistysim.min.js` without preserving or replacing its
  upstream provenance/license in any future widening that would ship that asset
