Add Grafana alerts dashboard for mobile-friendly alert overview

Two panels: currently firing alerts (firing/pending/noData/error) and
recent state changes. Refreshes every 30s. Uses Grafana's built-in
alertlist panel type — no datasource needed.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

argocd/manifests/grafana-config/dashboards/configmap-alerts.yaml

@@ -0,0 +1,77 @@
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: grafana-dashboard-alerts
+  namespace: monitoring
+  labels:
+    grafana_dashboard: "1"
+data:
+  alerts.json: |
+    {
+      "annotations": {
+        "list": []
+      },
+      "editable": true,
+      "fiscalYearStartMonth": 0,
+      "graphTooltip": 0,
+      "id": null,
+      "links": [],
+      "panels": [
+        {
+          "gridPos": { "h": 10, "w": 24, "x": 0, "y": 0 },
+          "id": 1,
+          "options": {
+            "alertListOptions": {
+              "showOptions": "current",
+              "maxItems": 50,
+              "sortOrder": 1,
+              "stateFilter": {
+                "firing": true,
+                "pending": true,
+                "noData": true,
+                "normal": false,
+                "error": true
+              }
+            }
+          },
+          "title": "Firing Alerts",
+          "type": "alertlist"
+        },
+        {
+          "gridPos": { "h": 10, "w": 24, "x": 0, "y": 10 },
+          "id": 2,
+          "options": {
+            "alertListOptions": {
+              "showOptions": "changes",
+              "maxItems": 50,
+              "sortOrder": 1,
+              "stateFilter": {
+                "firing": true,
+                "pending": true,
+                "noData": true,
+                "normal": true,
+                "error": true
+              }
+            }
+          },
+          "title": "Recent State Changes",
+          "type": "alertlist"
+        }
+      ],
+      "refresh": "30s",
+      "schemaVersion": 38,
+      "tags": ["alerts"],
+      "templating": {
+        "list": []
+      },
+      "time": {
+        "from": "now-24h",
+        "to": "now"
+      },
+      "timepicker": {},
+      "timezone": "browser",
+      "title": "Alerts",
+      "uid": "alerts",
+      "version": 1,
+      "weekStart": ""
+    }

argocd/manifests/grafana-config/kustomization.yaml

@@ -26,6 +26,7 @@ resources:
   - dashboards/configmap-sifaka-disks.yaml
   - dashboards/configmap-forgejo.yaml
   - dashboards/configmap-tempo.yaml
+  - dashboards/configmap-alerts.yaml
   # TeslaMate dashboards are fetched by the init-teslamate-dashboards init
   # container in the Grafana deployment, sourced from mirrors/teslamate on forge.
   # See argocd/manifests/grafana/deployment.yaml for the version pin.

docs/changelog.d/+alerts-dashboard.feature.md

@@ -0,0 +1 @@
+Add Grafana "Alerts" dashboard showing currently firing alerts and recent state changes.