fix: add error states to OrgResolver, DashboardPage, AdminTenantsPage

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

ui/src/auth/OrgResolver.tsx

@@ -1,6 +1,6 @@
 import { useEffect } from 'react';
 import { useLogto } from '@logto/react';
-import { Spinner } from '@cameleer/design-system';
+import { Button, EmptyState, Spinner } from '@cameleer/design-system';
 import { useMe } from '../api/hooks';
 import { useOrgStore } from './useOrganization';
 import { fetchConfig } from '../config';
@@ -11,7 +11,7 @@ import { fetchConfig } from '../config';
  * Renders children once resolved.
  */
 export function OrgResolver({ children }: { children: React.ReactNode }) {
-  const { data: me, isLoading, isError } = useMe();
+  const { data: me, isLoading, isError, refetch } = useMe();
   const { getAccessToken } = useLogto();
   const { getIdTokenClaims } = useLogto();
   const { setOrganizations, setCurrentOrg, setScopes, setUsername, currentOrgId } = useOrgStore();
@@ -86,7 +86,17 @@ export function OrgResolver({ children }: { children: React.ReactNode }) {
   }
 
   if (isError) {
-    return null;
+    return (
+      <div style={{ display: 'flex', flexDirection: 'column', alignItems: 'center', justifyContent: 'center', minHeight: '50vh', gap: '1rem' }}>
+        <EmptyState
+          title="Unable to load account"
+          description="Failed to retrieve your organization. Please try again or contact support."
+        />
+        <Button variant="secondary" size="sm" onClick={() => refetch()}>
+          Retry
+        </Button>
+      </div>
+    );
   }
 
   return <>{children}</>;