- Add GA4 measurement ID to config (default: G-J0PCVT14NY)
- Add /api/config endpoint to expose GA ID to frontend
- Update cookie consent with Analytics category (opt-in)
- Load GA4 only after user consents to analytics cookies
- Update CSP to allow Google Analytics domains
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>