chore(i18n): extract translations for alert rules navigation

Add translation strings for the new Alert Rules navigation tabs:
- alerting.navigation.alert-rules
- alerting.navigation.recently-deleted

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude Sonnet 4.5 <noreply@anthropic.com>

pkg/services/navtree/navtreeimpl/navtree.go

@@ -446,9 +446,32 @@ func (s *ServiceImpl) buildAlertNavLinks(c *contextmodel.ReqContext) *navtree.Na
 	}
 
 	if hasAccess(ac.EvalAny(ac.EvalPermission(ac.ActionAlertingRuleRead), ac.EvalPermission(ac.ActionAlertingRuleExternalRead))) {
-		alertChildNavs = append(alertChildNavs, &navtree.NavLink{
-			Text: "Alert rules", SubTitle: "Rules that determine whether an alert will fire", Id: "alert-list", Url: s.cfg.AppSubURL + "/alerting/list", Icon: "list-ul",
-		})
+		//nolint:staticcheck // not yet migrated to OpenFeature
+		if s.features.IsEnabled(c.Req.Context(), featuremgmt.FlagAlertingNavigationV2) {
+			// New navigation: Alert rules parent (tabs managed on frontend)
+			alertChildNavs = append(alertChildNavs, &navtree.NavLink{
+				Text: "Alert rules", SubTitle: "Rules that determine whether an alert will fire", Id: "alert-rules", Url: s.cfg.AppSubURL + "/alerting/list", Icon: "list-ul",
+			})
+
+			// Add child nav items for permission checking (tabs will be rendered by frontend)
+			// Alert rules list tab
+			alertChildNavs = append(alertChildNavs, &navtree.NavLink{
+				Text: "Alert rules", Id: "alert-rules-list", Url: s.cfg.AppSubURL + "/alerting/list",
+			})
+
+			// Recently deleted tab (check additional feature flags)
+			//nolint:staticcheck // not yet migrated to OpenFeature
+			if c.GetOrgRole() == org.RoleAdmin && s.features.IsEnabled(c.Req.Context(), featuremgmt.FlagAlertRuleRestore) && s.features.IsEnabled(c.Req.Context(), featuremgmt.FlagAlertingRuleRecoverDeleted) {
+				alertChildNavs = append(alertChildNavs, &navtree.NavLink{
+					Text: "Recently deleted", Id: "alert-rules-recently-deleted", Url: s.cfg.AppSubURL + "/alerting/recently-deleted",
+				})
+			}
+		} else {
+			// Legacy navigation
+			alertChildNavs = append(alertChildNavs, &navtree.NavLink{
+				Text: "Alert rules", SubTitle: "Rules that determine whether an alert will fire", Id: "alert-list", Url: s.cfg.AppSubURL + "/alerting/list", Icon: "list-ul",
+			})
+		}
 	}
 
 	contactPointsPerms := []ac.Evaluator{
@@ -508,12 +531,16 @@ func (s *ServiceImpl) buildAlertNavLinks(c *contextmodel.ReqContext) *navtree.Na
 	}
 	//nolint:staticcheck // not yet migrated to OpenFeature
 	if c.GetOrgRole() == org.RoleAdmin && s.features.IsEnabled(c.Req.Context(), featuremgmt.FlagAlertRuleRestore) && s.features.IsEnabled(c.Req.Context(), featuremgmt.FlagAlertingRuleRecoverDeleted) {
-		alertChildNavs = append(alertChildNavs, &navtree.NavLink{
-			Text:     "Recently deleted",
-			SubTitle: "Any items listed here for more than 30 days will be automatically deleted.",
-			Id:       "alerts/recently-deleted",
-			Url:      s.cfg.AppSubURL + "/alerting/recently-deleted",
-		})
+		// Only show as standalone item in legacy navigation (V2 shows it as a tab under Alert rules)
+		//nolint:staticcheck // not yet migrated to OpenFeature
+		if !s.features.IsEnabled(c.Req.Context(), featuremgmt.FlagAlertingNavigationV2) {
+			alertChildNavs = append(alertChildNavs, &navtree.NavLink{
+				Text:     "Recently deleted",
+				SubTitle: "Any items listed here for more than 30 days will be automatically deleted.",
+				Id:       "alerts/recently-deleted",
+				Url:      s.cfg.AppSubURL + "/alerting/recently-deleted",
+			})
+		}
 	}
 
 	if c.GetOrgRole() == org.RoleAdmin {

public/app/features/alerting/unified/navigation/useAlertRulesNav.ts

@@ -0,0 +1,69 @@
+import { useLocation } from 'react-router-dom-v5-compat';
+
+import { NavModelItem } from '@grafana/data';
+import { t } from '@grafana/i18n';
+import { config } from '@grafana/runtime';
+import { useSelector } from 'app/types/store';
+
+export function useAlertRulesNav() {
+  const location = useLocation();
+  const navIndex = useSelector((state) => state.navIndex);
+
+  // Check if V2 navigation is enabled
+  const useV2Nav = config.featureToggles.alertingNavigationV2;
+
+  if (!useV2Nav) {
+    // Legacy navigation: return simple navId
+    return {
+      navId: 'alert-list',
+      pageNav: undefined,
+    };
+  }
+
+  // V2 Navigation: Create tabs structure
+  const alertRulesNav = navIndex['alert-rules'];
+
+  if (!alertRulesNav) {
+    // Fallback to legacy if nav item doesn't exist
+    return {
+      navId: 'alert-list',
+      pageNav: undefined,
+    };
+  }
+
+  // All available tabs
+  const allTabs = [
+    {
+      id: 'alert-rules-list',
+      text: t('alerting.navigation.alert-rules', 'Alert rules'),
+      url: '/alerting/list',
+      active: location.pathname === '/alerting/list',
+      icon: 'list-ul',
+      parentItem: alertRulesNav,
+    },
+    {
+      id: 'alert-rules-recently-deleted',
+      text: t('alerting.navigation.recently-deleted', 'Recently deleted'),
+      url: '/alerting/recently-deleted',
+      active: location.pathname === '/alerting/recently-deleted',
+      icon: 'history',
+      parentItem: alertRulesNav,
+    },
+  ].filter((tab) => {
+    // Filter based on permissions - if nav item doesn't exist, user doesn't have permission
+    const navItem = navIndex[tab.id];
+    return navItem !== undefined;
+  });
+
+  // Create pageNav that represents the Alert rules page with tabs as children
+  const pageNav: NavModelItem = {
+    ...alertRulesNav,
+    // eslint-disable-next-line @typescript-eslint/consistent-type-assertions
+    children: allTabs as NavModelItem[],
+  };
+
+  return {
+    navId: 'alert-rules',
+    pageNav,
+  };
+}

public/app/features/alerting/unified/rule-list/RuleList.v1.tsx

@@ -20,6 +20,7 @@ import { shouldUsePrometheusRulesPrimary } from '../featureToggles';
 import { useCombinedRuleNamespaces } from '../hooks/useCombinedRuleNamespaces';
 import { useFilteredRules, useRulesFilter } from '../hooks/useFilteredRules';
 import { useUnifiedAlertingSelector } from '../hooks/useUnifiedAlertingSelector';
+import { useAlertRulesNav } from '../navigation/useAlertRulesNav';
 import { fetchAllPromAndRulerRulesAction, fetchAllPromRulesAction, fetchRulerRulesAction } from '../state/actions';
 import { RULE_LIST_POLL_INTERVAL_MS } from '../utils/constants';
 import { GRAFANA_RULES_SOURCE_NAME, getAllRulesSourceNames } from '../utils/datasource';
@@ -38,6 +39,7 @@ const LIMIT_ALERTS = INSTANCES_DISPLAY_LIMIT + 1;
 const prometheusRulesPrimary = shouldUsePrometheusRulesPrimary();
 
 const RuleListV1 = () => {
+  const { navId, pageNav } = useAlertRulesNav();
   const dispatch = useDispatch();
   const rulesDataSourceNames = useMemo(getAllRulesSourceNames, []);
   const [expandAll, setExpandAll] = useState(false);
@@ -119,7 +121,8 @@ const RuleListV1 = () => {
     // We don't want to show the Loading... indicator for the whole page.
     // We show separate indicators for Grafana-managed and Cloud rules
     <AlertingPageWrapper
-      navId="alert-list"
+      navId={navId}
+      pageNav={pageNav}
       isLoading={false}
       renderTitle={(title) => <RuleListPageTitle title={title} />}
       actions={<RuleListActionButtons hasAlertRulesCreated={hasAlertRulesCreated} />}

public/app/features/alerting/unified/rule-list/RuleList.v2.tsx

@@ -13,6 +13,7 @@ import { useListViewMode } from '../components/rules/Filter/RulesViewModeSelecto
 import { AIAlertRuleButtonComponent } from '../enterprise-components/AI/AIGenAlertRuleButton/addAIAlertRuleButton';
 import { AlertingAction, useAlertingAbility } from '../hooks/useAbilities';
 import { useRulesFilter } from '../hooks/useFilteredRules';
+import { useAlertRulesNav } from '../navigation/useAlertRulesNav';
 import { getRulesDataSources } from '../utils/datasource';
 
 import { FilterView } from './FilterView';
@@ -123,10 +124,12 @@ export function RuleListActions() {
 
 export default function RuleListPage() {
   const { isApplying } = useApplyDefaultSearch();
+  const { navId, pageNav } = useAlertRulesNav();
 
   return (
     <AlertingPageWrapper
-      navId="alert-list"
+      navId={navId}
+      pageNav={pageNav}
       renderTitle={(title) => <RuleListPageTitle title={title} />}
       isLoading={isApplying}
       actions={<RuleListActions />}

public/locales/en-US/grafana.json

@@ -1929,6 +1929,10 @@
       "select-group": "Select group",
       "select-namespace": "Select namespace"
     },
+    "navigation": {
+      "alert-rules": "Alert rules",
+      "recently-deleted": "Recently deleted"
+    },
     "need-help-info": {
       "need-help": "Need help?"
     },