C1: migrate homepage dashboard to ringtail k3s

Repoint the ArgoCD Application destination from minikube to ringtail and
bump the image tag to the new amd64 nix-built v1.11.0-b87f62e-nix.

Rework services.yaml for the autodiscovery shift: 11 services that
previously auto-populated via minikube Ingress annotations (ArgoCD,
Immich, Kiwix, Mealie, Miniflux, Grafana, Prometheus, Navidrome,
Paperless, TeslaMate, Transmission) become explicit static entries with
their widget configs preserved. Conversely, the ringtail services that
will now auto-populate (Frigate/NVR, Authentik, Ntfy) are removed from
the static list to avoid duplicates; Ollama becomes newly visible.

Add a Content group for Immich/Kiwix/Miniflux which previously lived
under the autodiscovered "Content" group from annotations.

argocd/manifests/homepage/services.yaml

@@ -1,3 +1,6 @@
+# Homepage runs on ringtail (k3s) — its k8s autodiscovery only sees ringtail
+# Ingresses (frigate→NVR, authentik, ntfy, ollama). Services that live on
+# minikube (and indri-native) need explicit static entries here.
 - Host Services:
     - Forgejo:
         href: https://forge.eblu.me
@@ -57,10 +60,6 @@
     #       type: caddy
     #       url: http://indri.tail8d86e.ts.net:2019
 - Home:
-    - NVR:
-        href: https://nvr.ops.eblu.me
-        icon: frigate.png
-        description: Network video recorder
     - Jellyfin:
         href: https://jellyfin.ops.eblu.me
         icon: jellyfin
@@ -72,15 +71,61 @@
           enableBlocks: true
           enableNowPlaying: false
           fields: ["movies", "series", "episodes"]
+    - Mealie:
+        href: https://meals.ops.eblu.me
+        icon: mealie.png
+        description: Recipe manager
+    - DJ:
+        href: https://dj.ops.eblu.me
+        icon: navidrome.png
+        description: Music streaming server
+        widget:
+          type: navidrome
+          url: https://dj.ops.eblu.me
+          user: "{{HOMEPAGE_VAR_NAVIDROME_USER}}"
+          token: "{{HOMEPAGE_VAR_NAVIDROME_TOKEN}}"
+          salt: "{{HOMEPAGE_VAR_NAVIDROME_SALT}}"
+    - Paperless:
+        href: https://paperless.ops.eblu.me
+        icon: paperless-ngx.png
+        description: Document management
+- Content:
+    - Immich:
+        href: https://photos.ops.eblu.me
+        icon: immich.png
+        description: Photo management
+    - Kiwix:
+        href: https://kiwix.ops.eblu.me
+        icon: kiwix.png
+        description: Offline Wikipedia
+    - Miniflux:
+        href: https://feed.ops.eblu.me
+        icon: miniflux.png
+        description: RSS reader
+        widget:
+          type: miniflux
+          url: https://feed.ops.eblu.me
+          key: "{{HOMEPAGE_VAR_MINIFLUX_API_KEY}}"
+          fields: ["unread"]
 - Infrastructure:
-    - Authentik:
-        href: https://authentik.ops.eblu.me
-        icon: authentik
-        description: Identity provider
-    - Ntfy:
-        href: https://ntfy.ops.eblu.me
-        icon: ntfy.png
-        description: Push notifications
+    - ArgoCD:
+        href: https://argocd.ops.eblu.me
+        icon: argo-cd.png
+        description: GitOps CD
+    - Grafana:
+        href: https://grafana.ops.eblu.me
+        icon: grafana.png
+        description: Metrics dashboards
+        widget:
+          type: grafana
+          url: https://grafana.ops.eblu.me
+          username: "{{HOMEPAGE_VAR_GRAFANA_USERNAME}}"
+          password: "{{HOMEPAGE_VAR_GRAFANA_PASSWORD}}"
+          fields: ["dashboards", "totalalerts", "alertstriggered"]
+    - Prometheus:
+        href: https://prometheus.ops.eblu.me
+        icon: prometheus.png
+        description: Metrics storage
 - Services:
     # CV and Docs were previously auto-discovered from k8s Ingresses; after
     # the indri-native migration ([[cv-on-indri]], [[docs-on-indri]]) there
@@ -93,3 +138,11 @@
         href: https://docs.eblu.me
         icon: mdi-book-open-page-variant
         description: BlumeOps Documentation
+    - TeslaMate:
+        href: https://tesla.ops.eblu.me
+        icon: teslamate.png
+        description: Tesla data logger
+    - Transmission:
+        href: https://torrent.ops.eblu.me
+        icon: transmission.png
+        description: Torrent client