Building React + Quill canvases

The whole application is one React/TSX file (src/canvas.tsx in the source project). It must export default a single React component that takes no props — the host mounts it. Do not import react-dom or call createRoot.

Start from the working scaffold in references/starter-scaffold.md on a first build: it already wires the date picker, theme tokens, per-query loading state (every card fills in independently as its own data lands), and correct typed-node result reading. Keep that wiring; replace the sample metrics and layout. Keep its pattern of one component per card with editable() params, and follow the "Params" section of the building-canvases skill for each card you add.

Imports

Use React, Quill, Recharts, Lucide, and Day.js for the standard application shell. The platform also admits ten optional libraries for specialized work. Read references/platform-libraries.md before choosing one.