# HyperTwist Phase S2-C first-party clean-room skill specs implementation packet

Created on `2026-05-29`

## Status

- first-party HyperTwist packet
- bounded `Phase S2-C` implementation slice

## Purpose

This packet lands the bounded first-party clean-room skill-spec seam under the
canonical `Skillization And Command Surface` doctrine.

The landed slice is:

- clean-room-ready skill specs
- first-party skill-spec state for restrictive lanes

It is not:

- live restrictive skill wrapper behavior
- broader training/coaching pack widening
- donor wording or donor command promotion

## Current authority basis

This implementation packet stands on:

- `docs/ops/HYPERTWIST_SKILLIZATION_AND_COMMAND_SURFACE_DOCTRINE_2026-05-21.md`
- `docs/ops/HYPERTWIST_OPTIONAL_ASSISTIVE_FEATURE_DEACTIVATION_AND_REMOVABILITY_DOCTRINE_2026-05-21.md`
- `docs/ops/HYPERTWIST_IMPLEMENTATION_PHASE_1_KICKOFF.md`
- `docs/v6_5_deep_manual_pack/HyperTwist/ARCHITECTURE.md`
- `docs/v6_5_deep_manual_pack/HyperTwist/FEATURE_REGISTRY.md`
- `docs/v6_5_deep_manual_pack/HyperTwist/SKILLS.md`
- `docs/v6_5_deep_manual_pack/HyperTwist/PROVENANCE_AND_TRUST_MODEL.md`
- `docs/arch/HYPERTWIST_PHASES2_C_FIRST_PARTY_CLEAN_ROOM_SKILL_SPECS_PREPARATION_PACKET_2026-05-29.md`

## Landed scope

The current code now owns a bounded first-party clean-room skill-spec seam
through:

- registry promotion for:
  - `skill/roux-session-review`
- canonical clean-room skill-spec and aggregate state contracts in:
  - `HyperTwistSkillTypes.h`
- first-party skill-spec derivation over the landed registry, control-state,
  authoring-harness, and command-contract seams in:
  - `UHyperTwistSkillCoreLibrary`
- sample contract helpers in:
  - `UHyperTwistContractLibrary::MakeSampleSkillCleanRoomSkillSpecState()`
  - `UHyperTwistContractLibrary::SerializeSkillCleanRoomSkillSpecStateToJson(...)`
  - `UHyperTwistContractLibrary::DeserializeSkillCleanRoomSkillSpecStateFromJson(...)`
- focused automation coverage in:
  - `HyperTwistSkillPhaseS2CCleanRoomSkillSpecTest.cpp`

## Why this is still intentionally bounded

This packet lands clean-room-ready skill specs only.

Still deferred:

- live restrictive skill runtime behavior
- broader training/coaching pack widening

## Validation

Build validation:

- `UnrealHyperTwistEditor Win64 Development`

Focused automation validation:

- `HyperTwist.FirstParty.Skill.PhaseS2C.SkillSpecCoverage`
- `HyperTwist.FirstParty.Skill.PhaseS2C.FirstPartyTermsOnly`
- `HyperTwist.FirstParty.Skill.PhaseS2C.SerializationRoundTrip`

Observed:

- `3` focused `Phase S2-C` automation tests succeeded

## Queue effect

This packet consumes the current `Phase S2-C` implementation slice.

After this landing:

- `S2-C` is landed in current code
- `S3-A` is the next clean skillization move
- restrictive runtime behavior still remains separately deferred
