# HyperTwist Phase S7-C First-Party Creative/Media Packs Preparation Packet

Date: 2026-05-31
Owner lane: `lane/skillization/domain-creative`
Owner features:
- `feature/skills/compose-replay-explainer-pack`
- `feature/skills/prepare-media-parser-pack`
- `feature/skills/curate-shared-fixture-pack`

## Scope

Land the bounded first-party optional creative/media adjunct layer for:
- `compose-replay-explainer-pack`
- `prepare-media-parser-pack`
- `curate-shared-fixture-pack`

This phase reopens creative/media widening only above the landed `S7-B`
retained-pack seam and keeps broad runtime or authoring-shell promotion out of
scope.

## Authority Basis

- `A`: first-party replay-review, timer-export, media-export, and shared-fixture
  runtime and contract surfaces
- `R`: landed `Phase S7-B` packet plus existing first-party replay, export,
  parser, explainer, and fixture-boundary bundles
- `F`: skillization doctrine `S7-C` creative/media pack posture

## First-Party Dependencies

- skill registry/control/audit/authoring substrate
- landed `S7-B` retained domain-pack state
- first-party replay-review analytics
- first-party timer-export packet
- first-party media-export reference bundle
- first-party shared-asset reference bundle

## UI / Settings Exposure

- stays in `skill-group/domain-creative`
- remains optional-assistive, installed-when-disabled, and inert-when-disabled
- introduces no broad authoring-shell or runtime activation surface

## Audit / Provenance

- invocation-ledger required for all three skills
- produced artifacts:
  - `artifact/replay-explainer-pack-brief`
  - `artifact/media-parser-pack-brief`
  - `artifact/shared-fixture-pack-brief`

## Validation Plan

- registry/family/status count update
- control-state visibility update
- audit-ledger invocation update
- authoring/eval contract coverage update
- focused `Phase S7-C` state and serialization tests

## Off-State Behavior

- skills remain visible and opt-in by default
- disabling the skills keeps retained-pack grounding intact
- mixed-terms fixture and commercial media boundaries remain explicit

## Acceptance Gates

- every creative/media adjunct skill remains above the retained-pack seam
- replay explainer claims remain grounded in first-party replay/export contracts
- parser claims remain bounded to parser/compliance surfaces
- shared-fixture claims keep allowlist, provenance, and refresh boundaries
  explicit

## Non-Goals

- broad runtime, renderer, or editor-shell ownership claims
- blanket shipping of mixed-terms shared-assets payloads
- provider-specific overlay widening
- autonomous creative generation or pack mutation claims
