fix: move useState before early returns to fix React hooks ordering crash

Author: dreynow

apps/observatory/src/pages/ClientDetailPage.tsx

@@ -38,6 +38,7 @@ export const ClientDetailPage: React.FC = () => {
   const [assigning, setAssigning] = useState(false);
   const [assignError, setAssignError] = useState<string | null>(null);
   const [syncing, setSyncing] = useState(false);
+  const [syncError, setSyncError] = useState<string | null>(null);
   const [unassigningAgent, setUnassigningAgent] = useState<string | null>(null);
 
   if (loading) {
@@ -85,8 +86,6 @@ export const ClientDetailPage: React.FC = () => {
     setUnassigningAgent(null);
   };
 
-  const [syncError, setSyncError] = useState<string | null>(null);
-
   const handleSync = async () => {
     setSyncing(true);
     setSyncError(null);