diff --git a/frontend/package.json b/frontend/package.json
index 3f65a00..33ded95 100644
--- a/frontend/package.json
+++ b/frontend/package.json
@@ -1,7 +1,7 @@
 {
   "name": "checklist-frontend",
   "private": true,
-  "version": "1.3.5",
+  "version": "1.3.6",
   "type": "module",
   "scripts": {
     "dev": "vite",
diff --git a/frontend/public/service-worker.js b/frontend/public/service-worker.js
index 4bb06fb..99e9fb1 100644
--- a/frontend/public/service-worker.js
+++ b/frontend/public/service-worker.js
@@ -1,6 +1,6 @@
 // Service Worker para PWA con detección de actualizaciones
 // IMPORTANTE: Actualizar esta versión cada vez que se despliegue una nueva versión
-const CACHE_NAME = 'ayutec-v1.3.5';
+const CACHE_NAME = 'ayutec-v1.3.6';
 const urlsToCache = [
   '/',
   '/index.html'
diff --git a/frontend/src/App.jsx b/frontend/src/App.jsx
index dc71da6..e784da6 100644
--- a/frontend/src/App.jsx
+++ b/frontend/src/App.jsx
@@ -4247,6 +4247,9 @@ function InspectionModal({ checklist, existingInspection, user, onClose, onCompl
   const [currentQuestionIndex, setCurrentQuestionIndex] = useState(0)
   const [aiAnalyzing, setAiAnalyzing] = useState(false)
   
+  // Sistema anti-duplicados: rastrear último guardado por pregunta
+  const lastSaveTimestamp = useRef({})
+  
   // AI Assistant Chat
   const [showAIChat, setShowAIChat] = useState(false)
   const [aiChatMessages, setAiChatMessages] = useState([])
@@ -4419,6 +4422,17 @@ function InspectionModal({ checklist, existingInspection, user, onClose, onCompl
       return
     }
     
+    // ANTI-DUPLICADOS: Verificar si se guardó en el último segundo
+    const now = Date.now()
+    const lastSave = lastSaveTimestamp.current[questionId] || 0
+    if (now - lastSave < 1000) {
+      console.log(`⏭️ Saltando guardado duplicado para pregunta ${questionId} (última guardada hace ${now - lastSave}ms)`)
+      return
+    }
+    
+    // Marcar timestamp de guardado
+    lastSaveTimestamp.current[questionId] = now
+    
     try {
       const token = localStorage.getItem('token')
       const API_URL = import.meta.env.VITE_API_URL || ''
diff --git a/frontend/src/Sidebar.jsx b/frontend/src/Sidebar.jsx
index c2e0638..7cd0cf4 100644
--- a/frontend/src/Sidebar.jsx
+++ b/frontend/src/Sidebar.jsx
@@ -153,7 +153,7 @@ export default function Sidebar({ user, activeTab, setActiveTab, sidebarOpen, se
                 className="w-10 h-10 object-contain bg-white rounded p-1"
               />
               <p className="text-xs text-indigo-300 font-medium hover:text-indigo-200">
-                Ayutec v1.3.5
+                Ayutec v1.3.6
               </p>
             </a>
           </div>
diff --git a/lineas.ps1 b/lineas.ps1
new file mode 100644
index 0000000..5191114
--- /dev/null
+++ b/lineas.ps1
@@ -0,0 +1,41 @@
+param(
+    [Parameter(Mandatory=$true)]
+    [string]$Fecha
+)
+
+# Convertir fecha dd/mm/aaaa → yyyy-mm-dd
+try {
+    $dateObj = [datetime]::ParseExact($Fecha, "dd/MM/yyyy", $null)
+} catch {
+    Write-Host "❌ Formato inválido. Usa dd/mm/aaaa (ej: 05/12/2025)"
+    exit
+}
+
+$FechaISO = $dateObj.ToString("yyyy-MM-dd")
+
+$desde = "$FechaISO 00:00"
+$hasta = "$FechaISO 23:59"
+
+$added = 0
+$removed = 0
+
+git log --since="$desde" --until="$hasta" --pretty=tformat: --numstat |
+    ForEach-Object {
+        $cols = $_.Split()
+
+        # Saltar líneas vacías
+        if ($cols.Length -lt 2) { return }
+
+        # Si Git muestra "-", ignorar esta línea
+        if ($cols[0] -eq "-" -or $cols[1] -eq "-") { return }
+
+        # Sumar líneas
+        $added += [int]$cols[0]
+        $removed += [int]$cols[1]
+    }
+
+Write-Host "Fecha ingresada: $Fecha"
+Write-Host "Fecha usada (ISO): $FechaISO"
+Write-Host "Líneas añadidas: $added"
+Write-Host "Líneas eliminadas: $removed"
+Write-Host "Total neto: " ($added - $removed)