feat: electron desktop packaging, CDN asset migration, production docs, scene JSON spec

electron/main.js

@@ -0,0 +1,13 @@
+const { app, BrowserWindow } = require('electron')
+const path = require('path')
+
+app.whenReady().then(() => {
+  const win = new BrowserWindow({
+    fullscreen: true,
+    autoHideMenuBar: true,
+    webPreferences: { nodeIntegration: false, contextIsolation: true }
+  })
+  win.loadFile(path.join(__dirname, '..', 'dist', 'index.html'))
+})
+
+app.on('window-all-closed', () => app.quit())