AllowedConnectOrigins had a sentry-ingest-origin placeholder that
was simply incorrect - the Sentry tunnel exists precisely so that
exception is never needed. Both SecurityHeaders fields are Umami-only
now, with inline comments on when to set them versus leave them out,
and a note that MasterModule__MasterUrl degrades to a warning rather
than a startup failure when unset.
Sluijsens
579e0ceaac