# Step 9C — Numerology × Human Design

This stage implements the Human Design integration described in book-v1. The book presents Numerology as the frequency code and Human Design as the energy mechanics.

## Important methodology boundary
The source does not provide a complete Human Design chart calculation from date of birth alone. Therefore this module accepts known Human Design chart values manually and maps them to the existing numerology profile. It does not invent Type, Authority, Profile Lines, Environment/Gates, or Incarnation Cross.

## Book-v1 mappings
- Life Path ↔ Human Design Type & Strategy
- Destiny / Expression ↔ Profile Lines
- Soul Urge ↔ Inner Authority
- Personality ↔ Environment & Gates
- Pinnacle Cycles ↔ Incarnation Cross / long-term evolution themes

## Database
No schema changes. Manual chart fields are kept in the browser for the current session; existing database credentials are untouched.