Big Little Moments — Coloring Page Pipeline

The server-side pipeline is wired up and live at POST /api/process:
validate 1088×1408 → optional VanceAI enhance → Vectorizer.AI → SVG (+ optional 600 DPI PNG).

This screen is a placeholder. Run npm run test:pipeline -- /path/to/page.png to exercise the real pipeline from the command line. The drag-and-drop UI, styled to the ATLAS design system, is next.