[NoraSoong]

Summary

• Replace the default Mermaid Core Loop with a branded, compact SVG diagram.
• Add English and Chinese variants with dark-mode-aware styling.
• Keep the loop focused on materials, review, approval, MCP delivery, and code evidence.

Validation

• SVG files pass xmllint --noout.
• git diff --check passes.
• No product code or runtime behavior changed.