Build browser-based web applications with spheres — a TypeScript framework with fine-grained reactive views and token-based state management. TRIGGER when code imports `spheres`, `spheres/store`, `spheres/view`, or `spheres/server`; when a user asks to build, modify, or debug a spheres application; or when discussing `HTMLBuilder`/`SVGBuilder`, `container`/`derived`/`supplied`, `renderToDOM`, `createStore`, `useEffect`, `useCommand`, `useContainerHooks`, `createStringRenderer`, `createStreamRenderer`, or `activateZone`.
2026-07-07