feat: RBAC page reads cmd-k navigation state for tab switch and highlight

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

ui/src/pages/Admin/UsersTab.tsx

@@ -1,4 +1,4 @@
-import { useState, useMemo } from 'react';
+import { useState, useMemo, useEffect } from 'react';
 import {
   Avatar,
   Badge,
@@ -36,7 +36,7 @@ import type { UserDetail } from '../../api/queries/admin/rbac';
 import { useAuthStore } from '../../auth/auth-store';
 import styles from './UserManagement.module.css';
 
-export default function UsersTab() {
+export default function UsersTab({ highlightId, onHighlightConsumed }: { highlightId?: string | null; onHighlightConsumed?: () => void }) {
   const { toast } = useToast();
   const { data: users, isLoading } = useUsers();
   const { data: allGroups } = useGroups();
@@ -49,6 +49,17 @@ export default function UsersTab() {
   const [deleteTarget, setDeleteTarget] = useState<UserDetail | null>(null);
   const [removeGroupTarget, setRemoveGroupTarget] = useState<string | null>(null);
 
+  // Auto-select highlighted item from cmd-k navigation
+  useEffect(() => {
+    if (highlightId && users) {
+      const match = users.find((u) => u.userId === highlightId);
+      if (match) {
+        setSelectedId(match.userId);
+        onHighlightConsumed?.();
+      }
+    }
+  }, [highlightId, users]); // eslint-disable-line react-hooks/exhaustive-deps
+
   // Create form state
   const [newUsername, setNewUsername] = useState('');
   const [newDisplay, setNewDisplay] = useState('');