Switch LLM-Supervised diagram from PNG to SVG

SVG scales cleanly at any terminal/browser size (65K vs 313K PNG).
Exported without embedded fonts for smaller file size.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: Grivn

README.md

@@ -37,7 +37,7 @@ This means: **memory management logic moves from prompt to code — deterministi
 | **LLM-Supervised** | External supervisor of a standalone binary | Mnemon |
 
 <p align="center">
-  <img src="docs/diagrams/llm-supervised-concept.png" width="720" alt="LLM-Supervised Architecture — three patterns compared, with detailed Mnemon implementation showing hooks, brain/organ split, and sub-agent delegation" />
+  <img src="docs/diagrams/llm-supervised-concept.svg" alt="LLM-Supervised Architecture — three patterns compared, with detailed Mnemon implementation showing hooks, brain/organ split, and sub-agent delegation" />
   <br />
   <sub>The LLM-Supervised pattern: hooks drive the lifecycle, the host LLM makes judgment calls, the binary handles deterministic computation.</sub>
 </p>