The logviewer UI gives browser access to the ClickHouse log store; it is
deployed behind an Authentik-gated oauth2-proxy front so only
akP-logviewer-admin members reach it, at https://logviewer.unkin.net.
- Adds the logviewer Deployment (docker-internal/logviewer:v0.1.0) reading
ClickHouse via the existing clickhouse-logreader credentials
- Adds an oauth2-proxy front (quay.io v7.15.3) with ak_groups-based
authorization, mirroring the arrstack pattern
- Syncs kv kubernetes/namespace/logging/default/oauth-credentials into the
logviewer-oauth-credentials Secret via the existing default VaultAuth
- Adds internal Gateway + HTTPRoutes for logviewer.unkin.net (vault-issuer
cert, external-dns -> 198.18.200.4, http->https redirect)
- Registers the logviewer directory in the logging kustomization
unkin-agent