[--Dashboard-- data source] Implement AdHoc filtering (#108011)

Behind a feature toggle: `dashboardDsAdHocFiltering`

pkg/services/featuremgmt/codeowners.go

@@ -8,6 +8,7 @@ const (
 	grafanaAppPlatformSquad                     codeowner = "@grafana/grafana-app-platform-squad"
 	grafanaDashboardsSquad                      codeowner = "@grafana/dashboards-squad"
 	grafanaDatavizSquad                         codeowner = "@grafana/dataviz-squad"
+	grafanaDataProSquad                         codeowner = "@grafana/datapro"
 	grafanaFrontendPlatformSquad                codeowner = "@grafana/grafana-frontend-platform"
 	grafanaFrontendSearchNavOrganise            codeowner = "@grafana/grafana-search-navigate-organise"
 	grafanaBackendServicesSquad                 codeowner = "@grafana/grafana-backend-services-squad"

pkg/services/featuremgmt/registry.go

@@ -1821,6 +1821,13 @@ var (
 			HideFromAdminPage: true,
 			HideFromDocs:      true,
 		},
+		{
+			Name:         "dashboardDsAdHocFiltering",
+			Description:  "Enables adhoc filtering support for the dashboard datasource",
+			Stage:        FeatureStageExperimental,
+			Owner:        grafanaDataProSquad,
+			FrontendOnly: true,
+		},
 	}
 )
 

pkg/services/featuremgmt/toggles_gen.csv

@@ -235,3 +235,4 @@ otelLogsFormatting,experimental,@grafana/observability-logs,false,false,true
 alertingNotificationHistory,experimental,@grafana/alerting-squad,false,false,false
 pluginAssetProvider,experimental,@grafana/plugins-platform-backend,false,true,false
 unifiedStorageSearchDualReaderEnabled,experimental,@grafana/search-and-storage,false,false,false
+dashboardDsAdHocFiltering,experimental,@grafana/datapro,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -950,4 +950,8 @@ const (
 	// FlagUnifiedStorageSearchDualReaderEnabled
 	// Enable dual reader for unified storage search
 	FlagUnifiedStorageSearchDualReaderEnabled = "unifiedStorageSearchDualReaderEnabled"
+
+	// FlagDashboardDsAdHocFiltering
+	// Enables adhoc filtering support for the dashboard datasource
+	FlagDashboardDsAdHocFiltering = "dashboardDsAdHocFiltering"
 )

pkg/services/featuremgmt/toggles_gen.json

@@ -796,6 +796,19 @@
         "codeowner": "@grafana/grafana-app-platform-squad"
       }
     },
+    {
+      "metadata": {
+        "name": "dashboardDsAdHocFiltering",
+        "resourceVersion": "1752487974435",
+        "creationTimestamp": "2025-07-14T10:12:54Z"
+      },
+      "spec": {
+        "description": "Enables adhoc filtering support for the dashboard datasource",
+        "stage": "experimental",
+        "codeowner": "@grafana/datapro",
+        "frontend": true
+      }
+    },
     {
       "metadata": {
         "name": "dashboardNewLayouts",