Self-contained, design-intelligence-grounded website/design generator:
resolve a grounded design system (BM25 over bundled CSV datasets, no Python
dependency) -> stack-aware prompt -> any LLM -> iterative self-correcting QC.

- REST POST /generate/website and SSE POST /generate/website/stream
- Agent generate_website tool + skill (opt-in)
- Create and modify (edit existing) modes
- QC: emoji, design-token usage, fonts, reduced-motion, viewport/lang/main/
  focus/cursor, non-inline/placeholder images, broken anchors, WCAG contrast;
  iterative auto-fix
- Optional per-website credits; multi-page MASTER+overrides persistence
- Publishable knowledge base (vendor:publish tag ai-engine-design-data)

Backward compatible: all new surfaces are config-gated/opt-in.