gitea got no auth (401: only signed in user) - secrets do not
concatenate. Secret now holds the full 'Bearer <token>' header.
Detail: https://projects.knownelement.com/issues/734
Gitea response came back a dict (error body) - sensor state now shows
the truncated body so one restart identifies it. not: rejected by
trigger schema; guard lives in the condition template already.
Detail: https://projects.knownelement.com/issues/734