fix: load Auth0 SDK locally on kidlisp.com instead of CDN
CDN script was failing to load on lith (window.auth0 undefined after
10s timeout). Switch to the local bundled copy already served via
Caddy's /aesthetic.computer/* handler — same file the main site uses.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>