fix(agenda): atender paciente busca via API antes de navegar para GTO

Substitui o match de nome no frontend por uma busca real no backend.
handleAtender agora chama getPacientes(pacienteNome), seta o paciente
diretamente no store e navega — LancarGTO abre com o card já preenchido.

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

frontend/views/AgendaView.tsx

@@ -376,9 +376,19 @@ export const AgendaView: React.FC<{ onNavigate?: (view: string) => void }> = ({
     const currentUserEmail = HybridBackend.getCurrentUser();
     const gtoStore = useGTOStore();
 
-    const handleAtender = () => {
+    const handleAtender = async () => {
         if (!selectedAppointment || !onNavigate) return;
-        gtoStore.setPendingSearch(selectedAppointment.pacienteNome);
+        try {
+            const result = await HybridBackend.getPacientes(selectedAppointment.pacienteNome);
+            const list = Array.isArray(result) ? result : (result?.data ?? []);
+            if (list.length > 0) {
+                gtoStore.setPaciente(list[0]);
+            } else {
+                gtoStore.setPendingSearch(selectedAppointment.pacienteNome);
+            }
+        } catch {
+            gtoStore.setPendingSearch(selectedAppointment.pacienteNome);
+        }
         setShowDetails(false);
         onNavigate('lancar-gto');
     };