v0.5.0

v0.5.0: the audit stops manufacturing its own findings

Probe values keep their declared type and stay inside declared bounds,
so a coerced echo is no longer read as a server-forced value. What the
server fills is recorded as x-tfpfgen-server-default on the property
and makes the attribute Optional and Computed, rather than an OpenAPI
default nothing downstream reads. A proposal the audit no longer makes
is withdrawn instead of standing unanswerable.