Plugins: Adds AppChrome extension point (#106623)

* Plugins: adds basic PopupExtension point

* Simplify the extension point.

* Excluding the app chrome extension to be rendered on login/signup pages.

* Added feature toggle to be able to disable the app chrome extensions.

* Adding an error boundary around the extension point.

* Changed the way we use the feature toggle.

* moved to use the helper function instead of filtering.

* removed duplace info.

* chore: remove leftover useMemo

---------

Co-authored-by: Marcus Andersson <marcus.andersson@grafana.com>

pkg/services/featuremgmt/registry.go

@@ -1771,6 +1771,16 @@ var (
 			Owner:        grafanaPartnerPluginsSquad,
 			Expression:   "false",
 		},
+		{
+			Name:              "enableAppChromeExtensions",
+			Description:       "Set this to true to enable all app chrome extensions registered by plugins.",
+			Stage:             FeatureStageExperimental,
+			Owner:             grafanaPluginsPlatformSquad,
+			HideFromAdminPage: true,
+			HideFromDocs:      true,
+			FrontendOnly:      true,
+			Expression:        "false", // extensions will be disabled by default
+		},
 	}
 )
 

pkg/services/featuremgmt/toggles_gen.csv

@@ -231,3 +231,4 @@ alertingImportAlertmanagerAPI,experimental,@grafana/alerting-squad,false,false,f
 preferLibraryPanelTitle,privatePreview,@grafana/dashboards-squad,false,false,false
 tabularNumbers,GA,@grafana/grafana-frontend-platform,false,false,false
 newInfluxDSConfigPageDesign,privatePreview,@grafana/partner-datasources,false,false,false
+enableAppChromeExtensions,experimental,@grafana/plugins-platform-backend,false,false,true

pkg/services/featuremgmt/toggles_gen.go

@@ -934,4 +934,8 @@ const (
 	// FlagNewInfluxDSConfigPageDesign
 	// Enables new design for the InfluxDB data source configuration page
 	FlagNewInfluxDSConfigPageDesign = "newInfluxDSConfigPageDesign"
+
+	// FlagEnableAppChromeExtensions
+	// Set this to true to enable all app chrome extensions registered by plugins.
+	FlagEnableAppChromeExtensions = "enableAppChromeExtensions"
 )

pkg/services/featuremgmt/toggles_gen.json

@@ -943,6 +943,22 @@
         "codeowner": "@grafana/aws-datasources"
       }
     },
+    {
+      "metadata": {
+        "name": "enableAppChromeExtensions",
+        "resourceVersion": "1750235111726",
+        "creationTimestamp": "2025-06-18T08:25:11Z"
+      },
+      "spec": {
+        "description": "Set this to true to enable all app chrome extensions registered by plugins.",
+        "stage": "experimental",
+        "codeowner": "@grafana/plugins-platform-backend",
+        "frontend": true,
+        "hideFromAdminPage": true,
+        "hideFromDocs": true,
+        "expression": "false"
+      }
+    },
     {
       "metadata": {
         "name": "enableDatagridEditing",