Handle null referrer in pixel tracking route

Spegnimento

13 febbraio 2026 alle ore 07:39 UTC

Autore

juanisidoro

Impegno

3d8d5a7

request.headers.get("referer") returns null when the header is absent (e.g. email clients). The Zod schema uses .optional() which accepts undefined but rejects null, causing silent validation failure and pixel events not being recorded. Fixes #4028