Adds window.__pascalScene = useScene in development builds so that a
running MCP process (which has its own Node-side in-memory store) can
inject a built scene into the browser editor for visual verification:
fetch('/dev/casa-sol.json')
.then(r => r.json())
.then(s => window.__pascalScene.getState().setScene(s.nodes, s.rootNodeIds))
Also ships /public/dev/casa-sol.json as a reference scene — the
artefact exported from the MCP Casa del Sol test build.
Gated behind NODE_ENV !== 'production' so nothing leaks to prod.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>