A432 Application Map

This document enumerates concrete application layers that sit on top of the immutable math nucleus. All code lives in the canonical directory src/0/3/6/9/1/2/4/8/7/5/1/ and imports onlya432.math.ts and its re-exports.

Layer	Entry file	Stream source	Purpose
Visual Yin-Yang	a432.yin.yang.controller.ts	vortexStream()	Canvas symbol, polarity colours
Tone Chess	a432.chess.controller.ts	toneBoardStream()	8×8 board colour matrix
Metatron 3-D	a432.metatron.controller.ts	a432SequenceStream()	SVG/Three JS node pulses
Terminal Flow	a432.terminal.controller.ts	terminalOutput$	CLI colour stream
Quantum Mock-up	a432.quantum.ts	linear + vortex	Digit-based quantum evolution example

How to extend

1. Pick a physical or business variable → map it to a single digit (metric or vortex).
2. Write a pure digit function f: Digit×Digit → Digit to express evolution.
3. Pipe the result through existing helpers (angle, CMYK, frequency).
4. Surface via a new controller or API endpoint.

HTTP Harmoniser (server)

a432.server.ts responds to any URL:

• extracts digits, computes vortex digit → 200 JSON with RGB
• no digits or forbidden chars → digit 8 mapping → HTTP 404 (still RGB)

Zero-entropy checklist (per app)

• [ ] No new arrays >1 digit
• [ ] Uses only helpers from a432.math.ts
• [ ] Handles impossibility via collision/fold or dot-switch
• [ ] Filename starts with a432.