npm ci failed in Docker because package-lock.json was stale (missing three
and the workbox/PWA deps) and @google/model-viewer@4.2.0 requires three@^0.182.0
while package.json pinned ^0.163.0. Bumped three and regenerated the lockfile.
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>