The bridge runs server-side, so it cannot run a browser flow and ZITADEL has no
part in it. Give it a Gotify client token instead: GOTIFY_URLS points at the
public host, GOTIFY_CLIENT_TOKENS comes from a SOPS secret.
The token belongs to user `rock`, is named igotify-assist, and has
expiresAfterInactivitySeconds 0 so it never idles out. Delete the client row in
Gotify to revoke it.
Verified with the token: GET /client returns 200 and GET /message returns the
latest message.