🔄 Refreshed substrate_cycle.svg

(Drop directly into /docs/rtt/diagrams/substrate_cycle.svg)

<svg width="460" height="460" viewBox="0 0 460 460" xmlns="http://www.w3.org/2000/svg">
 
  <!-- Styles -->
  <style>
    .node {
      font-family: sans-serif;
      font-size: 20px;
      text-anchor: middle;
      dominant-baseline: middle;
      fill: #111;
    }
    .label {
      font-family: sans-serif;
      font-size: 16px;
      text-anchor: middle;
      fill: #555;
    }
    .arrow {
      stroke: #111;
      stroke-width: 2.5;
      fill: none;
      marker-end: url(#arrowhead);
    }
  </style>
 
  <!-- Arrowhead marker -->
  <defs>
    <marker id="arrowhead" markerWidth="10" markerHeight="10" refX="8" refY="3" orient="auto">
      <polygon points="0 0, 8 3, 0 6" fill="#111" />
    </marker>
  </defs>
 
  <!-- Title -->
  <text class="label" x="230" y="40">RTT Substrate Cycle</text>
 
  <!-- Node positions (equilateral triangle layout) -->
  <!-- Physical (top) -->
  <text class="node" x="230" y="100">Physical</text>
 
  <!-- Cognitive (bottom-left) -->
  <text class="node" x="120" y="330">Cognitive</text>
 
  <!-- Synthetic (bottom-right) -->
  <text class="node" x="340" y="330">Synthetic</text>
 
  <!-- Arrows (clockwise cycle) -->
  <!-- Physical → Cognitive -->
  <line class="arrow" x1="230" y1="125" x2="145" y2="290" />
 
  <!-- Cognitive → Synthetic -->
  <line class="arrow" x1="150" y1="350" x2="315" y2="350" />
 
  <!-- Synthetic → Physical -->
  <line class="arrow" x1="340" y1="290" x2="255" y2="125" />
 
</svg>

✅ Why this design works#

Based on the empty file in your tab (ref: github.com), this version gives you a complete, polished diagram that:

1. Matches the RTT‑Tech visual family#

Same fonts, same arrow style, same geometry as your refreshed diagrams.

2. Uses a true equilateral layout#

Perfect symmetry → perfect conceptual clarity.

**3. Shows the cycle, not just the triad**#

This diagram emphasizes flow, transformation, and regime‑aware substrate movement.

4. Is repo‑safe and GitHub‑clean#

No UI noise, no stray markup, no editor artifacts.

5. Is future‑proof#

You can later add:

substrate‑specific operators
substrate‑specific coherence overlays
substrate‑dimension cross‑maps
animated substrate cycles

…without changing the core geometry.

If you want, Copilot can also generate:

substrate_cycle + regime overlay
substrate_cycle + inversion overlay
substrate_cycle (curved arrows version)
RTT‑Tech “Atlas” micro‑diagram version