Review build-grafana-container docs: stamp reviewed, fix cross-links

Also fix stale grafana.md reference card (Helm → Kustomize).

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

docs/reference/services/grafana.md

@@ -1,6 +1,6 @@
 ---
 title: Grafana
-modified: 2026-02-08
+modified: 2026-02-28
 tags:
   - service
   - observability
@@ -17,8 +17,8 @@ Dashboards and visualization for BlumeOps observability.
 | **URL** | https://grafana.ops.eblu.me |
 | **Tailscale URL** | https://grafana.tail8d86e.ts.net |
 | **Namespace** | `monitoring` |
-| **Helm Chart** | grafana (mirrored to forge) |
-| **Values** | `argocd/manifests/grafana/values.yaml` |
+| **Deployment** | Kustomize (`argocd/manifests/grafana/`) |
+| **Image** | `registry.ops.eblu.me/blumeops/grafana` |
 
 ## Authentication
 
@@ -57,6 +57,8 @@ Optional annotation: `grafana_folder: "FolderName"`
 
 ## Related
 
+- [[build-grafana-container]] - Home-built container image
+- [[kustomize-grafana-deployment]] - Kustomize manifest structure
 - [[authentik]] - OIDC identity provider for SSO
 - [[prometheus]] - Metrics datasource
 - [[loki]] - Logs datasource