# HyperTwist Phase I-B immersion and focus-presence controls implementation packet

Date: `2026-05-31`

## Outcome

`Phase I-B` is now landed locally as the second bounded HyperTwist-native
immersive packet.

## What landed

The current code now owns:

- an immersive presence-control contract
- a comfort and vignette boundary
- a posture-variant contract
- a session-local environment recall boundary
- runtime-library accessors and focused automation coverage for the new
  focus-presence control surfaces

## Code surfaces

- `HyperTwistTrainingImmersiveEnvironmentLibrary.h/.cpp`
  - new first-party focus-presence control surfaces inside the existing
    immersive environment bundle
- `HyperTwistTrainingRuntimeLibrary.h/.cpp`
  - runtime accessors for the `Phase I-B` immersive control packet
- `HyperTwistImmersivePhaseIBPresenceControlContractTest.cpp`
  - focused automation for presence, comfort/posture, and session-recall
    assertions

## Boundedness preserved

This packet does **not** claim:

- platform-global XR settings ownership
- locomotion rig, guardian, or avatar-body calibration ownership
- cross-session cloud profile ownership
- cross-product preference memory ownership
- later immersive phases such as spatial coaching staging or reactive
  environment cues

The slice remains a focus-presence-controls-only follow-on above `Phase I-A`.

## Canon impact

The HyperTwist canon now records:

- `Phase I-A` scenic virtual training environment foundations is landed
- `Phase I-B` immersion and focus-presence controls is landed
- `Phase I-C` spatial coaching and tutorial staging is the next deliberate
  immersive seam
- the immersive lane remains HyperTwist-native and training/runtime oriented
- the lane still does not become a generic virtual desktop shell, platform-wide
  XR settings takeover, or cross-product profile lane
