The terraform-authentik runner's Vault policy only grants read on
kv/data/kubernetes/namespace/+/default/oauth-credentials (literal trailing
filename), so the arrstack/default/mediamark-oauth-credentials path 403s at
plan time and reddens CI. mediamark deploys in its own `mediamark` namespace
(watchstate model), so point the data source at
kubernetes/namespace/mediamark/default/oauth-credentials, which the policy
covers. Hostnames are unchanged.
Rename the permission group to akP-mediamark-user to match the peer tier-suffix
convention (akP-watchstate-admin, akP-arrstack-user). The group name is derived
from the filename in config/config.hcl, so update the akR-media-adult
reference too.
Add an oauth2 provider/application for the mediamark kids-content marking UI,
a permission group gating it, and nest that permission in akR-media-adult.