# HyperTwist Phase I-A scenic virtual training environment foundations preparation packet

Date: `2026-05-31`

## Goal

Open the first bounded HyperTwist-native immersive lane through explicit scenic
environment foundations rather than reopening another retained donor row.

## Why this slice is justified

The roadmap and scoping note already reserved a first-party immersive lane for
HyperTwist:

- scenic environment families
- legibility-first scenic lighting presets
- calm ambient audio posture
- stable puzzle, replay, and coach world anchors

Until now, that value was only documented as a deferred scaffold.

The current retained donor queue is largely saturated for safe narrow work in
this source-exposed thread, while the immersive lane is explicitly first-party
and product-native.

## Bounded implementation target

Land the first immersive foundations packet only:

- first-party scenic immersive environment profile contract
- first-party scenic lighting preset boundary
- first-party calm ambient-audio boundary
- first-party stable world-anchor contract
- runtime-library accessors for all four surfaces
- focused automation coverage

## Explicit non-goals

Do not widen this packet into:

- a generic virtual desktop or productivity shell
- floating monitor ownership
- full weather simulation
- soundtrack, music-platform, or voice-playback ownership
- later immersive phases like focus-presence controls or reactive coaching
  staging

## Files expected to move

- `UnrealHyperTwist/Source/UnrealHyperTwist/Public/HyperTwistTraining/HyperTwistTrainingImmersiveEnvironmentLibrary.h`
- `UnrealHyperTwist/Source/UnrealHyperTwist/Private/HyperTwistTraining/HyperTwistTrainingImmersiveEnvironmentLibrary.cpp`
- `UnrealHyperTwist/Source/UnrealHyperTwist/Public/HyperTwistTraining/HyperTwistTrainingRuntimeLibrary.h`
- `UnrealHyperTwist/Source/UnrealHyperTwist/Private/HyperTwistTraining/HyperTwistTrainingRuntimeLibrary.cpp`
- `UnrealHyperTwist/Source/UnrealHyperTwist/Tests/HyperTwistImmersivePhaseIAEnvironmentFoundationContractTest.cpp`
- canon sync docs

## Validation target

Safe source-level validation only on this VPS:

- focused contract coverage for the new immersive foundation surfaces
- targeted wiring sweep
- `git diff --check`
