- styles.css: move .glass into @layer components so Tailwind's
.absolute utility wins the cascade. OnboardingHelper was rendering
position: relative and pushing the editor down on first paint until
clicking dismissed it.
- SceneContainer + Stage3DBody: drop hardcoded calc(100vh - 68px) and
height - 56 topbar offsets; the lib now fills its parent container.
- Webapp adapter: drop the +56 getViewportSize compensation now that
the lib doesn't subtract a topbar from the supplied height.
- Tauri PageScene: wrap Stage3D in a calc(100vh - 56px) container
(matching .topbar-spacer) so its shape is preserved.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>