VCP visual-synesthesia protocol plugin for DeepSeek Harness: render agent HTML output as real UI (cards / KaTeX math / Mermaid diagrams / built-in calligraphy fonts / zero-JS interactions), plug-and-play on any DSH environment

VCP visual-synesthesia plugin v2 for DeepSeek Harness (official Slot API): raw-HTML vcp-root cards, streaming render, KaTeX/Mermaid/SVG, builtin fonts