Alerting: Add alertingUIUseFullyCompatBackendFilters feature toggle (#114153)

* Add alertingUIUseFullyCompatBackendFilters for fully compatible backend filters

* Remove hide from admin flag

pkg/services/featuremgmt/registry.go

@@ -527,6 +527,13 @@ var (
 			Owner:        grafanaAlertingSquad,
 			HideFromDocs: true,
 		},
+		{
+			Name:         "alertingUIUseFullyCompatBackendFilters",
+			Description:  "Enables the UI to use rules backend-side filters 100% compatible with the frontend filters",
+			Stage:        FeatureStageExperimental,
+			Owner:        grafanaAlertingSquad,
+			HideFromDocs: true,
+		},
 		{
 			Name:        "alertmanagerRemotePrimary",
 			Description: "Enable Grafana to have a remote Alertmanager instance as the primary Alertmanager.",

pkg/services/featuremgmt/toggles_gen.csv

@@ -73,6 +73,7 @@ cachingOptimizeSerializationMemoryUsage,experimental,@grafana/grafana-operator-e
 alertmanagerRemoteSecondary,experimental,@grafana/alerting-squad,false,false,false
 alertingProvenanceLockWrites,experimental,@grafana/alerting-squad,false,false,false
 alertingUIUseBackendFilters,experimental,@grafana/alerting-squad,false,false,false
+alertingUIUseFullyCompatBackendFilters,experimental,@grafana/alerting-squad,false,false,false
 alertmanagerRemotePrimary,experimental,@grafana/alerting-squad,false,false,false
 annotationPermissionUpdate,GA,@grafana/identity-access-team,false,false,false
 dashboardSceneForViewers,GA,@grafana/dashboards-squad,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -243,6 +243,10 @@ const (
 	// Enables the UI to use certain backend-side filters
 	FlagAlertingUIUseBackendFilters = "alertingUIUseBackendFilters"
 
+	// FlagAlertingUIUseFullyCompatBackendFilters
+	// Enables the UI to use rules backend-side filters 100% compatible with the frontend filters
+	FlagAlertingUIUseFullyCompatBackendFilters = "alertingUIUseFullyCompatBackendFilters"
+
 	// FlagAlertmanagerRemotePrimary
 	// Enable Grafana to have a remote Alertmanager instance as the primary Alertmanager.
 	FlagAlertmanagerRemotePrimary = "alertmanagerRemotePrimary"

pkg/services/featuremgmt/toggles_gen.json

@@ -540,6 +540,35 @@
         "hideFromDocs": true
       }
     },
+    {
+      "metadata": {
+        "name": "alertingUIUseCompatibleBackendFilters",
+        "resourceVersion": "1763478911684",
+        "creationTimestamp": "2025-11-18T15:15:11Z",
+        "deletionTimestamp": "2025-11-18T15:17:12Z"
+      },
+      "spec": {
+        "description": "Enables the UI to use rules backend-side filters 100% compatible with the frontend filters",
+        "stage": "experimental",
+        "codeowner": "@grafana/alerting-squad",
+        "hideFromAdminPage": true,
+        "hideFromDocs": true
+      }
+    },
+    {
+      "metadata": {
+        "name": "alertingUIUseFullyCompatBackendFilters",
+        "resourceVersion": "1763479032988",
+        "creationTimestamp": "2025-11-18T15:17:12Z"
+      },
+      "spec": {
+        "description": "Enables the UI to use rules backend-side filters 100% compatible with the frontend filters",
+        "stage": "experimental",
+        "codeowner": "@grafana/alerting-squad",
+        "hideFromAdminPage": true,
+        "hideFromDocs": true
+      }
+    },
     {
       "metadata": {
         "name": "alertingUseNewSimplifiedRoutingHashAlgorithm",