Add .github/workflows/pages.yml: on every published release (and manual
dispatch) it builds the web bundle with trunk
(`--public-url /OpenCADStudio/`, no-default-features so no solid3d/C
deps), adds .nojekyll, and publishes dist/ to GitHub Pages. No COOP/COEP
needed since wasm runs single-threaded.
Enable via repo Settings → Pages → Source: GitHub Actions.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>