# Nike Domain - Architecture

> Legacy Planned Physical Wellness and Fitness Instruction Domain (TODO
> Phase 15)

Nike is a legacy planned domain label with no workspace packages. It was
originally scoped in Phase 15 as a standalone fitness-instruction domain, but
that work was implemented under Lilith paths and later domain responsibility
shifted to Shakti. This document records the intended package layout and
ownership guidance for any future extraction effort.

## Status

Legacy planned-only domain. No `apps/nike/*` or `libs/nike/*` packages exist.

## Intended Package Layout (Phase 15)

If extracted into its own workspace, Nike would be organized around the
following libraries:

```text
libs/nike/
  core/
  animation/
  instructor-avatar/
  calisthenics/
  flexibility/
  strength/
  cardio/
  mobility/
  rehabilitation/
  dance/
  sports/
  trainer-ai/
  biometrics/
  content-generation/
  safety/
  analytics/
  community/
  api/
```

The original Phase 15 implementation references Lilith paths and should be
treated as historical placement. Any future extraction should preserve existing
Lilith behavior and coordinate with Shakti rather than duplicating active
physical-training ownership.

## Ownership Guidance

New general fitness and movement-intelligence work should default to **Shakti**
unless it is explicitly scoped as a Nike extraction. Historical Phase 15 feature
documentation remains useful as an implementation reference and for regression
coverage.

If a Nike extraction is ever performed, the architecture must be contract-first
so that Lilith, Tara, Shakti, Iris, and Psyche can consume the capabilities
without introducing direct dependency loops between those domains.

## Verification Expectations

Any future Nike extraction should include the following test categories to
confirm correctness and safety:

- Motion and pose fixture tests.
- Safety-validation tests (contraindication checks, modification triggers).
- Workout-plan generation tests.
- Biometric ingestion tests.
- App-flow tests where user-facing behavior is exposed.