Fix pre-servicios preview: clear store once, clean row HTML structure

- Move _rdaJsonStore={} reset to before both sections so ps-json-* keys
  are not wiped when pacientes section renders
- Replace divide-y wrapper divs with explicit border-b on each row,
  eliminating duplicate/misplaced dividers in the pre-servicios list

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

app/templates/automation.html

@@ -209,6 +209,7 @@ async function previewAutomation() {
     if (!data.success) { showToast(data.message || 'Error al consultar', 'error'); return; }
 
     _previewData = data;
+    _rdaJsonStore = {};
     document.getElementById('cnt-pacientes').textContent = data.pacientes;
     document.getElementById('cnt-recepciones').textContent = data.recepciones;
     document.getElementById('cnt-examenes').textContent = data.examenes;
@@ -222,8 +223,8 @@ async function previewAutomation() {
         const key = `ps-json-${i}`;
         _rdaJsonStore[key] = ps.json;
         return `
-        <div class="divide-y divide-orange-50">
-          <div class="flex items-center gap-3 px-4 py-2.5 hover:bg-orange-50 cursor-pointer select-none"
+        <div>
+          <div class="flex items-center gap-3 px-4 py-2.5 hover:bg-orange-50 cursor-pointer select-none border-b border-orange-100"
                onclick="togglePs('${key}', this)">
             <i class="fas fa-chevron-right text-orange-300 text-xs transition-transform duration-150" id="pschev-${i}"></i>
             <span class="font-mono text-orange-700 font-medium w-32">${ps.factura}</span>
@@ -231,7 +232,7 @@ async function previewAutomation() {
             <span class="text-gray-600 flex-1 text-xs">Pac. ${ps.paciente}</span>
             <span class="text-xs text-orange-500">${ps.examenes} examen(es)</span>
           </div>
-          <div id="${key}" class="hidden bg-gray-900 text-green-300 text-xs font-mono p-4 overflow-x-auto whitespace-pre"></div>
+          <div id="${key}" class="hidden bg-gray-900 text-green-300 text-xs font-mono p-4 overflow-x-auto whitespace-pre border-b border-orange-100"></div>
         </div>`;
       }).join('');
       psSection.classList.remove('hidden');
@@ -244,7 +245,6 @@ async function previewAutomation() {
       table.innerHTML = '<div class="p-4 text-gray-400 text-center">No hay pacientes para esta fecha</div>';
       showToast('No hay datos para esa fecha', 'warning');
     } else {
-      _rdaJsonStore = {};
       table.innerHTML = data.pacientes_preview.map((p, i) => {
         const rdaRows = p.rda.map((r, j) => {
           const key = `rda-json-${i}-${j}`;