feat: Templates persistentes en servidor + Constructor con tabs por tipo de comando

- Templates ahora se guardan en servidor (data/templates.json) disponibles para todos
- API CRUD para templates: GET/POST /api/templates, GET/PUT/DELETE /api/templates/[id]
- Constructor de comandos rediseñado con tabs: Texto, Feed, Cortar, Pulse, QR, Barcode
- Cada tipo de comando tiene su formulario específico con campos relevantes
- Eliminado QuickActions (integrado en tabs del constructor)
- Mejorada UI de lista de impresoras con renderizado condicional
- Agregado data/ a .gitignore (datos de runtime)

.gitignore

@@ -22,3 +22,6 @@ logs
 .env
 .env.*
 !.env.example
+
+# Data files (runtime)
+data/

app/components/constructor/CommandBuilder.vue

@@ -1,30 +1,64 @@
 <script setup lang="ts">
 const queue = usePrintQueue()
 
-// Estado del formulario
+// Tipo de comando activo
+const activeCommand = ref('text')
+
+// Tipos de comandos disponibles
+const commandTypes = [
+  { label: 'Texto', value: 'text', icon: 'i-heroicons-document-text' },
+  { label: 'Feed', value: 'feed', icon: 'i-heroicons-arrow-down' },
+  { label: 'Cortar', value: 'cut', icon: 'i-heroicons-scissors' },
+  { label: 'Pulse', value: 'pulse', icon: 'i-heroicons-bolt' },
+  { label: 'QR', value: 'qr', icon: 'i-heroicons-qr-code' },
+  { label: 'Barcode', value: 'barcode', icon: 'i-heroicons-bars-3' }
+]
+
+// ===== Estado para TEXTO =====
 const text = ref('')
-const align = ref('')
+const align = ref('none')
-const font = ref('')
+const font = ref('none')
-const width = ref<number | undefined>()
+const textWidth = ref<number | undefined>()
-const height = ref<number | undefined>()
+const textHeight = ref<number | undefined>()
 const bold = ref(false)
 const underline = ref(false)
 const reverse = ref(false)
 const smooth = ref(false)
-const color = ref('')
+const color = ref('none')
-const feedLines = ref<number | undefined>()
-const cut = ref('')
 
-// Opciones para selects
+// ===== Estado para FEED =====
+const feedLines = ref(2)
+
+// ===== Estado para CORTAR =====
+const cutType = ref('feed')
+
+// ===== Estado para PULSE =====
+const pulseDrawer = ref('drawer_1')
+const pulseTime = ref('pulse_200')
+
+// ===== Estado para QR =====
+const qrData = ref('')
+const qrModel = ref('qrcode_model_2')
+const qrLevel = ref('level_m')
+const qrSize = ref(6)
+
+// ===== Estado para BARCODE =====
+const barcodeData = ref('')
+const barcodeType = ref('ean13')
+const barcodeHri = ref('below')
+const barcodeWidth = ref(3)
+const barcodeHeight = ref(80)
+
+// ===== Opciones para selects =====
 const alignOptions = [
-  { label: '(sin cambio)', value: '' },
+  { label: '(sin cambio)', value: 'none' },
   { label: 'Izquierda', value: 'left' },
   { label: 'Centro', value: 'center' },
   { label: 'Derecha', value: 'right' }
 ]
 
 const fontOptions = [
-  { label: '(sin cambio)', value: '' },
+  { label: '(sin cambio)', value: 'none' },
   { label: 'Font A', value: 'font_a' },
   { label: 'Font B', value: 'font_b' },
   { label: 'Font C', value: 'font_c' },
@@ -35,7 +69,7 @@ const fontOptions = [
 ]
 
 const colorOptions = [
-  { label: '(default)', value: '' },
+  { label: '(default)', value: 'none' },
   { label: 'Color 1', value: 'color_1' },
   { label: 'Color 2', value: 'color_2' },
   { label: 'Color 3', value: 'color_3' },
@@ -43,7 +77,6 @@ const colorOptions = [
 ]
 
 const cutOptions = [
-  { label: '(no cortar)', value: '' },
   { label: 'Sin feed', value: 'no_feed' },
   { label: 'Con feed', value: 'feed' },
   { label: 'Reservar', value: 'reserve' },
@@ -52,51 +85,173 @@ const cutOptions = [
   { label: 'Full reservar', value: 'reserve_fullcut' }
 ]
 
-const formatSections = [
+const drawerOptions = [
-  { label: 'Alineación y Fuente', value: 'alignment', icon: 'i-heroicons-bars-3-bottom-left' },
+  { label: 'Drawer 1', value: 'drawer_1' },
-  { label: 'Tamaño', value: 'size', icon: 'i-heroicons-arrows-pointing-out' },
+  { label: 'Drawer 2', value: 'drawer_2' }
-  { label: 'Estilo', value: 'style', icon: 'i-heroicons-paint-brush' },
-  { label: 'Acciones finales', value: 'actions', icon: 'i-heroicons-scissors' }
 ]
 
+const pulseTimeOptions = [
+  { label: '100ms', value: 'pulse_100' },
+  { label: '200ms', value: 'pulse_200' },
+  { label: '300ms', value: 'pulse_300' },
+  { label: '400ms', value: 'pulse_400' },
+  { label: '500ms', value: 'pulse_500' }
+]
+
+const qrModelOptions = [
+  { label: 'Model 1', value: 'qrcode_model_1' },
+  { label: 'Model 2', value: 'qrcode_model_2' }
+]
+
+const qrLevelOptions = [
+  { label: 'Level L (7%)', value: 'level_l' },
+  { label: 'Level M (15%)', value: 'level_m' },
+  { label: 'Level Q (25%)', value: 'level_q' },
+  { label: 'Level H (30%)', value: 'level_h' }
+]
+
+const barcodeTypeOptions = [
+  { label: 'UPC-A', value: 'upc_a' },
+  { label: 'UPC-E', value: 'upc_e' },
+  { label: 'EAN-13', value: 'ean13' },
+  { label: 'EAN-8', value: 'ean8' },
+  { label: 'Code 39', value: 'code39' },
+  { label: 'ITF', value: 'itf' },
+  { label: 'Codabar', value: 'codabar' },
+  { label: 'Code 93', value: 'code93' },
+  { label: 'Code 128', value: 'code128' },
+  { label: 'GS1-128', value: 'gs1_128' },
+  { label: 'GS1 DataBar', value: 'gs1_databar_omnidirectional' }
+]
+
+const barcodeHriOptions = [
+  { label: 'Sin HRI', value: 'none' },
+  { label: 'Arriba', value: 'above' },
+  { label: 'Abajo', value: 'below' },
+  { label: 'Ambos', value: 'both' }
+]
+
+// ===== Secciones de formato para texto =====
+const formatSections = [
+  { label: 'Alineación y Fuente', slot: 'alignment', icon: 'i-heroicons-bars-3-bottom-left' },
+  { label: 'Tamaño', slot: 'size', icon: 'i-heroicons-arrows-pointing-out' },
+  { label: 'Estilo', slot: 'style', icon: 'i-heroicons-paint-brush' }
+]
+
+// ===== Funciones =====
 function resetForm() {
+  // Reset texto
   text.value = ''
-  align.value = ''
+  align.value = 'none'
-  font.value = ''
+  font.value = 'none'
-  width.value = undefined
+  textWidth.value = undefined
-  height.value = undefined
+  textHeight.value = undefined
   bold.value = false
   underline.value = false
   reverse.value = false
   smooth.value = false
-  color.value = ''
+  color.value = 'none'
-  feedLines.value = undefined
+  // Reset feed
-  cut.value = ''
+  feedLines.value = 2
+  // Reset cut
+  cutType.value = 'feed'
+  // Reset pulse
+  pulseDrawer.value = 'drawer_1'
+  pulseTime.value = 'pulse_200'
+  // Reset QR
+  qrData.value = ''
+  qrModel.value = 'qrcode_model_2'
+  qrLevel.value = 'level_m'
+  qrSize.value = 6
+  // Reset barcode
+  barcodeData.value = ''
+  barcodeType.value = 'ean13'
+  barcodeHri.value = 'below'
+  barcodeWidth.value = 3
+  barcodeHeight.value = 80
 }
 
-function queueText() {
+function addToQueue() {
   const ops: any[] = []
 
-  if (align.value) ops.push({ op: 'textAlign', align: align.value })
+  switch (activeCommand.value) {
-  if (font.value) ops.push({ op: 'textFont', font: font.value })
+    case 'text':
-  if (width.value || height.value) {
+      if (align.value && align.value !== 'none') ops.push({ op: 'textAlign', align: align.value })
-    ops.push({ op: 'textSize', width: width.value, height: height.value })
+      if (font.value && font.value !== 'none') ops.push({ op: 'textFont', font: font.value })
+      if (textWidth.value || textHeight.value) {
+        ops.push({ op: 'textSize', width: textWidth.value, height: textHeight.value })
       }
       ops.push({
         op: 'textStyle',
         em: bold.value,
         ul: underline.value,
         reverse: reverse.value,
-    ...(color.value ? { color: color.value } : {})
+        ...(color.value && color.value !== 'none' ? { color: color.value } : {})
       })
       if (text.value) ops.push({ op: 'text', value: text.value })
-  if (feedLines.value != null && feedLines.value !== 0) {
+      break
-    ops.push({ op: 'feedLine', line: Number(feedLines.value) })
-  }
-  if (cut.value) ops.push({ op: 'cut', type: cut.value })
 
+    case 'feed':
+      ops.push({ op: 'feedLine', line: Number(feedLines.value) || 1 })
+      break
+
+    case 'cut':
+      ops.push({ op: 'cut', type: cutType.value })
+      break
+
+    case 'pulse':
+      ops.push({ op: 'pulse', drawer: pulseDrawer.value, time: pulseTime.value })
+      break
+
+    case 'qr':
+      if (qrData.value) {
+        ops.push({
+          op: 'qrcode',
+          data: qrData.value,
+          model: qrModel.value,
+          level: qrLevel.value,
+          size: qrSize.value
+        })
+      }
+      break
+
+    case 'barcode':
+      if (barcodeData.value) {
+        ops.push({
+          op: 'barcode',
+          data: barcodeData.value,
+          type: barcodeType.value,
+          hri: barcodeHri.value,
+          width: barcodeWidth.value,
+          height: barcodeHeight.value
+        })
+      }
+      break
+  }
+
+  if (ops.length > 0) {
     queue.addOperations(ops)
   }
+}
+
+// Validación para habilitar/deshabilitar botón
+const canAdd = computed(() => {
+  switch (activeCommand.value) {
+    case 'text':
+      return text.value.trim().length > 0
+    case 'feed':
+      return feedLines.value != null && feedLines.value > 0
+    case 'cut':
+    case 'pulse':
+      return true
+    case 'qr':
+      return qrData.value.trim().length > 0
+    case 'barcode':
+      return barcodeData.value.trim().length > 0
+    default:
+      return false
+  }
+})
 </script>
 
 <template>
@@ -115,8 +270,24 @@ function queueText() {
       </div>
     </template>
 
-    <!-- Textarea principal -->
+    <!-- Selector de tipo de comando -->
-    <UFormField label="Texto a imprimir" class="mb-4">
+    <div class="flex flex-wrap gap-2 mb-4">
+      <UButton
+        v-for="cmd in commandTypes"
+        :key="cmd.value"
+        :variant="activeCommand === cmd.value ? 'solid' : 'outline'"
+        :color="activeCommand === cmd.value ? 'primary' : 'neutral'"
+        size="sm"
+        :icon="cmd.icon"
+        @click="activeCommand = cmd.value"
+      >
+        {{ cmd.label }}
+      </UButton>
+    </div>
+
+    <!-- Formulario de TEXTO -->
+    <div v-if="activeCommand === 'text'" class="space-y-4">
+      <UFormField label="Texto a imprimir">
         <UTextarea
           v-model="text"
           :rows="4"
@@ -125,18 +296,17 @@ function queueText() {
         />
       </UFormField>
 
-    <!-- Controles de formato con Accordion -->
       <UAccordion :items="formatSections" type="multiple">
         <template #alignment>
           <div class="grid grid-cols-1 sm:grid-cols-3 gap-3 p-3">
             <UFormField label="Alineación">
-            <USelect v-model="align" :items="alignOptions" placeholder="Seleccionar" />
+              <USelect v-model="align" :items="alignOptions" />
             </UFormField>
             <UFormField label="Fuente">
-            <USelect v-model="font" :items="fontOptions" placeholder="Seleccionar" />
+              <USelect v-model="font" :items="fontOptions" />
             </UFormField>
             <UFormField label="Color">
-            <USelect v-model="color" :items="colorOptions" placeholder="Seleccionar" />
+              <USelect v-model="color" :items="colorOptions" />
             </UFormField>
           </div>
         </template>
@@ -144,10 +314,10 @@ function queueText() {
         <template #size>
           <div class="grid grid-cols-2 gap-3 p-3">
             <UFormField label="Ancho (1-8)">
-            <UInput v-model.number="width" type="number" :min="1" :max="8" placeholder="1" />
+              <UInput v-model.number="textWidth" type="number" :min="1" :max="8" placeholder="1" />
             </UFormField>
             <UFormField label="Alto (1-8)">
-            <UInput v-model.number="height" type="number" :min="1" :max="8" placeholder="1" />
+              <UInput v-model.number="textHeight" type="number" :min="1" :max="8" placeholder="1" />
             </UFormField>
           </div>
         </template>
@@ -160,26 +330,105 @@ function queueText() {
             <UCheckbox v-model="smooth" label="Suavizado" />
           </div>
         </template>
+      </UAccordion>
+    </div>
 
-      <template #actions>
+    <!-- Formulario de FEED -->
-        <div class="grid grid-cols-2 gap-3 p-3">
+    <div v-else-if="activeCommand === 'feed'" class="space-y-4">
-          <UFormField label="Líneas de feed">
+      <UFormField label="Líneas de avance">
-            <UInput v-model.number="feedLines" type="number" :min="0" :max="255" placeholder="0" />
+        <UInput
+          v-model.number="feedLines"
+          type="number"
+          :min="1"
+          :max="255"
+          placeholder="2"
+        />
       </UFormField>
-          <UFormField label="Corte de papel">
+      <p class="text-sm text-gray-500 dark:text-gray-400">
-            <USelect v-model="cut" :items="cutOptions" placeholder="Seleccionar" />
+        Avanza el papel la cantidad de líneas especificadas.
+      </p>
+    </div>
+
+    <!-- Formulario de CORTAR -->
+    <div v-else-if="activeCommand === 'cut'" class="space-y-4">
+      <UFormField label="Tipo de corte">
+        <USelect v-model="cutType" :items="cutOptions" />
+      </UFormField>
+      <p class="text-sm text-gray-500 dark:text-gray-400">
+        Corta el papel según el tipo seleccionado.
+      </p>
+    </div>
+
+    <!-- Formulario de PULSE -->
+    <div v-else-if="activeCommand === 'pulse'" class="space-y-4">
+      <div class="grid grid-cols-2 gap-4">
+        <UFormField label="Drawer">
+          <USelect v-model="pulseDrawer" :items="drawerOptions" />
+        </UFormField>
+        <UFormField label="Duración">
+          <USelect v-model="pulseTime" :items="pulseTimeOptions" />
         </UFormField>
       </div>
-      </template>
+      <p class="text-sm text-gray-500 dark:text-gray-400">
-    </UAccordion>
+        Envía un pulso al cajón de dinero para abrirlo.
+      </p>
+    </div>
+
+    <!-- Formulario de QR -->
+    <div v-else-if="activeCommand === 'qr'" class="space-y-4">
+      <UFormField label="Datos del QR">
+        <UTextarea
+          v-model="qrData"
+          :rows="2"
+          placeholder="https://ejemplo.com o texto"
+        />
+      </UFormField>
+      <div class="grid grid-cols-3 gap-3">
+        <UFormField label="Modelo">
+          <USelect v-model="qrModel" :items="qrModelOptions" />
+        </UFormField>
+        <UFormField label="Corrección">
+          <USelect v-model="qrLevel" :items="qrLevelOptions" />
+        </UFormField>
+        <UFormField label="Tamaño">
+          <UInput v-model.number="qrSize" type="number" :min="1" :max="16" />
+        </UFormField>
+      </div>
+    </div>
+
+    <!-- Formulario de BARCODE -->
+    <div v-else-if="activeCommand === 'barcode'" class="space-y-4">
+      <UFormField label="Datos del código">
+        <UInput
+          v-model="barcodeData"
+          placeholder="490123456789"
+        />
+      </UFormField>
+      <div class="grid grid-cols-2 gap-3">
+        <UFormField label="Tipo">
+          <USelect v-model="barcodeType" :items="barcodeTypeOptions" />
+        </UFormField>
+        <UFormField label="HRI (texto)">
+          <USelect v-model="barcodeHri" :items="barcodeHriOptions" />
+        </UFormField>
+      </div>
+      <div class="grid grid-cols-2 gap-3">
+        <UFormField label="Ancho (2-6)">
+          <UInput v-model.number="barcodeWidth" type="number" :min="2" :max="6" />
+        </UFormField>
+        <UFormField label="Alto (1-255)">
+          <UInput v-model.number="barcodeHeight" type="number" :min="1" :max="255" />
+        </UFormField>
+      </div>
+    </div>
 
     <template #footer>
       <div class="flex gap-2">
-        <UButton color="primary" @click="queueText">
+        <UButton color="primary" :disabled="!canAdd" @click="addToQueue">
           Agregar a cola
         </UButton>
         <UButton variant="ghost" @click="resetForm">
-          Limpiar formulario
+          Limpiar
         </UButton>
       </div>
     </template>

app/components/constructor/QuickActions.vue

@@ -1,54 +0,0 @@
-<script setup lang="ts">
-const queue = usePrintQueue()
-
-const quickActions = [
-  {
-    label: 'Feed 2',
-    icon: 'i-heroicons-arrow-down',
-    ops: [{ op: 'feedLine', line: 2 }]
-  },
-  {
-    label: 'Cortar',
-    icon: 'i-heroicons-scissors',
-    ops: [{ op: 'cut', type: 'feed' }]
-  },
-  {
-    label: 'Pulse',
-    icon: 'i-heroicons-bolt',
-    ops: [{ op: 'pulse', drawer: 'drawer_1', time: 'pulse_200' }]
-  },
-  {
-    label: 'QR',
-    icon: 'i-heroicons-qr-code',
-    ops: [{ op: 'qrcode', data: 'https://example.com', model: 'qrcode_model_2', level: 'level_m', size: 6 }]
-  },
-  {
-    label: 'Barcode',
-    icon: 'i-heroicons-bars-3',
-    ops: [{ op: 'barcode', data: '490123456789', type: 'ean13', hri: 'below', width: 3, height: 80 }]
-  }
-]
-</script>
-
-<template>
-  <UCard variant="soft">
-    <template #header>
-      <span class="text-sm font-medium text-gray-500 dark:text-gray-400">
-        Atajos rápidos
-      </span>
-    </template>
-
-    <div class="flex flex-wrap gap-2">
-      <UButton
-        v-for="action in quickActions"
-        :key="action.label"
-        variant="outline"
-        size="sm"
-        :icon="action.icon"
-        @click="queue.addOperations(action.ops)"
-      >
-        {{ action.label }}
-      </UButton>
-    </div>
-  </UCard>
-</template>

app/components/printers/List.vue

@@ -71,6 +71,29 @@ async function handleDelete(printer: typeof printers.printers.value[0]) {
 
 <template>
   <div class="space-y-4">
+    <!-- Vista del formulario -->
+    <template v-if="showDrawer">
+      <div class="flex items-center gap-2 mb-4">
+        <UButton
+          icon="i-heroicons-arrow-left"
+          variant="ghost"
+          color="neutral"
+          size="sm"
+          @click="showDrawer = false"
+        />
+        <h3 class="text-lg font-semibold text-gray-900 dark:text-white">
+          {{ editingPrinter ? 'Editar impresora' : 'Nueva impresora' }}
+        </h3>
+      </div>
+      <PrintersForm
+        :printer="editingPrinter"
+        @submit="handleSubmit"
+        @cancel="showDrawer = false"
+      />
+    </template>
+
+    <!-- Vista de la lista -->
+    <template v-else>
       <div class="flex items-center justify-between">
         <h2 class="text-lg font-semibold text-gray-900 dark:text-white">
           Impresoras
@@ -112,21 +135,6 @@ async function handleDelete(printer: typeof printers.printers.value[0]) {
           @set-default="handleSetDefault(printer)"
         />
       </div>
-
-    <UDrawer v-model:open="showDrawer">
-      <template #header>
-        <h3 class="text-lg font-semibold">
-          {{ editingPrinter ? 'Editar impresora' : 'Nueva impresora' }}
-        </h3>
     </template>
-
-      <div class="p-4">
-        <PrintersForm
-          :printer="editingPrinter"
-          @submit="handleSubmit"
-          @cancel="showDrawer = false"
-        />
-      </div>
-    </UDrawer>
   </div>
 </template>

app/components/queue/Actions.vue

@@ -1,21 +1,35 @@
 <script setup lang="ts">
 const queue = usePrintQueue()
 const templates = useTemplates()
+const toast = useToast()
 
 const saveDrawerOpen = ref(false)
 const templateName = ref('')
 const templateDescription = ref('')
+const saving = ref(false)
 
-function saveAsTemplate() {
+async function saveAsTemplate() {
   if (!templateName.value.trim()) return
-  templates.saveTemplate(
+
+  saving.value = true
+  try {
+    const result = await templates.saveTemplate(
       templateName.value.trim(),
       templateDescription.value.trim(),
       queue.operations.value as any
     )
+
+    if (result) {
+      toast.add({ title: 'Template guardado', color: 'success' })
       templateName.value = ''
       templateDescription.value = ''
       saveDrawerOpen.value = false
+    } else {
+      toast.add({ title: 'Error al guardar template', color: 'error' })
+    }
+  } finally {
+    saving.value = false
+  }
 }
 </script>
 
@@ -101,7 +115,7 @@ function saveAsTemplate() {
           <UButton variant="ghost" @click="saveDrawerOpen = false">
             Cancelar
           </UButton>
-          <UButton color="primary" :disabled="!templateName.trim()" @click="saveAsTemplate">
+          <UButton color="primary" :disabled="!templateName.trim()" :loading="saving" @click="saveAsTemplate">
             Guardar
           </UButton>
         </div>

app/components/templates/TemplateList.vue

@@ -1,20 +1,39 @@
 <script setup lang="ts">
 const templates = useTemplates()
 const queue = usePrintQueue()
+const toast = useToast()
+
+// Cargar templates al montar
+onMounted(() => {
+  templates.fetchTemplates()
+})
 
 function loadTemplate(id: string) {
   const ops = templates.loadTemplate(id)
   if (ops) {
     queue.loadFromTemplate(ops)
+    toast.add({ title: 'Template cargado en la cola', color: 'success' })
   }
 }
 
-function duplicateTemplate(id: string) {
+async function duplicateTemplate(id: string) {
-  templates.duplicateTemplate(id)
+  const result = await templates.duplicateTemplate(id)
+  if (result) {
+    toast.add({ title: 'Template duplicado', color: 'success' })
+  } else {
+    toast.add({ title: 'Error al duplicar template', color: 'error' })
+  }
 }
 
-function deleteTemplate(id: string) {
+async function deleteTemplate(id: string) {
-  templates.deleteTemplate(id)
+  if (!confirm('¿Eliminar este template?')) return
+
+  const result = await templates.deleteTemplate(id)
+  if (result) {
+    toast.add({ title: 'Template eliminado', color: 'success' })
+  } else {
+    toast.add({ title: 'Error al eliminar template', color: 'error' })
+  }
 }
 </script>
 
@@ -29,7 +48,11 @@ function deleteTemplate(id: string) {
       </UBadge>
     </div>
 
-    <div v-if="templates.templates.value.length === 0" class="text-center py-12">
+    <div v-if="templates.loading.value" class="flex justify-center py-12">
+      <UIcon name="i-heroicons-arrow-path" class="w-8 h-8 animate-spin text-gray-400" />
+    </div>
+
+    <div v-else-if="templates.templates.value.length === 0" class="text-center py-12">
       <UIcon name="i-heroicons-document-duplicate" class="w-12 h-12 text-gray-400 dark:text-gray-600 mx-auto mb-3" />
       <p class="text-gray-500 dark:text-gray-400 mb-2">
         No hay templates guardados

app/composables/useTemplates.ts

@@ -5,92 +5,116 @@ export interface PrintTemplate {
   name: string
   description?: string
   operations: Operation[]
-  createdAt: number
+  createdAt: string
-  updatedAt: number
+  updatedAt: string
-}
-
-const STORAGE_KEY = 'printercentral-templates'
-
-// Función para generar UUID compatible con todos los navegadores
-function generateId(): string {
-  if (typeof crypto !== 'undefined' && crypto.randomUUID) {
-    return crypto.randomUUID()
-  }
-  // Fallback para navegadores sin crypto.randomUUID
-  return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, (c) => {
-    const r = Math.random() * 16 | 0
-    const v = c === 'x' ? r : (r & 0x3 | 0x8)
-    return v.toString(16)
-  })
 }
 
 export function useTemplates() {
   const templates = useState<PrintTemplate[]>('templates', () => [])
-  const initialized = useState('templatesInitialized', () => false)
+  const loading = useState('templatesLoading', () => false)
+  const error = useState<string | null>('templatesError', () => null)
 
-  // Cargar de localStorage al iniciar (solo cliente)
+  // Cargar templates del servidor
-  if (import.meta.client && !initialized.value) {
+  async function fetchTemplates(): Promise<void> {
-    const stored = localStorage.getItem(STORAGE_KEY)
+    loading.value = true
-    if (stored) {
+    error.value = null
     try {
-        templates.value = JSON.parse(stored)
+      const data = await $fetch<PrintTemplate[]>('/api/templates')
+      templates.value = data
     } catch (e) {
-        console.error('Error parsing templates:', e)
+      console.error('Error fetching templates:', e)
+      error.value = 'Error al cargar templates'
+    } finally {
+      loading.value = false
     }
   }
-    initialized.value = true
-  }
 
-  // Guardar en localStorage cuando cambie
+  // Guardar nuevo template
-  watch(templates, (val) => {
+  async function saveTemplate(
-    if (import.meta.client) {
+    name: string,
-      localStorage.setItem(STORAGE_KEY, JSON.stringify(val))
+    description: string,
-    }
+    operations: Operation[]
-  }, { deep: true })
+  ): Promise<PrintTemplate | null> {
-
+    error.value = null
-  function saveTemplate(name: string, description: string, operations: Operation[]): PrintTemplate {
+    try {
-    const template: PrintTemplate = {
+      const template = await $fetch<PrintTemplate>('/api/templates', {
-      id: generateId(),
+        method: 'POST',
+        body: {
           name,
           description,
-      operations: JSON.parse(JSON.stringify(operations)),
+          operations
-      createdAt: Date.now(),
-      updatedAt: Date.now()
         }
+      })
       templates.value = [...templates.value, template]
       return template
-  }
+    } catch (e) {
-
+      console.error('Error saving template:', e)
-  function updateTemplate(id: string, updates: Partial<Omit<PrintTemplate, 'id' | 'createdAt'>>) {
+      error.value = 'Error al guardar template'
-    const idx = templates.value.findIndex(t => t.id === id)
+      return null
-    if (idx !== -1) {
-      templates.value = templates.value.map((t, i) =>
-        i === idx ? { ...t, ...updates, updatedAt: Date.now() } : t
-      )
     }
   }
 
-  function deleteTemplate(id: string) {
+  // Actualizar template existente
+  async function updateTemplate(
+    id: string,
+    updates: Partial<{ name: string; description: string; operations: Operation[] }>
+  ): Promise<PrintTemplate | null> {
+    error.value = null
+    try {
+      const template = await $fetch<PrintTemplate>(`/api/templates/${id}`, {
+        method: 'PUT',
+        body: updates
+      })
+      templates.value = templates.value.map(t => t.id === id ? template : t)
+      return template
+    } catch (e) {
+      console.error('Error updating template:', e)
+      error.value = 'Error al actualizar template'
+      return null
+    }
+  }
+
+  // Eliminar template
+  async function deleteTemplate(id: string): Promise<boolean> {
+    error.value = null
+    try {
+      await $fetch(`/api/templates/${id}`, { method: 'DELETE' })
       templates.value = templates.value.filter(t => t.id !== id)
+      return true
+    } catch (e) {
+      console.error('Error deleting template:', e)
+      error.value = 'Error al eliminar template'
+      return false
+    }
   }
 
+  // Cargar operaciones de un template
   function loadTemplate(id: string): Operation[] | null {
     const template = templates.value.find(t => t.id === id)
     return template ? JSON.parse(JSON.stringify(template.operations)) : null
   }
 
-  function duplicateTemplate(id: string): PrintTemplate | null {
+  // Duplicar template
-    const template = templates.value.find(t => t.id === id)
+  async function duplicateTemplate(id: string): Promise<PrintTemplate | null> {
-    if (!template) return null
+    error.value = null
-    return saveTemplate(
+    try {
-      `${template.name} (copia)`,
+      const template = await $fetch<PrintTemplate>(`/api/templates/${id}/duplicate`, {
-      template.description || '',
+        method: 'POST'
-      template.operations
+      })
-    )
+      templates.value = [...templates.value, template]
+      return template
+    } catch (e) {
+      console.error('Error duplicating template:', e)
+      error.value = 'Error al duplicar template'
+      return null
+    }
   }
 
   return {
     templates: readonly(templates),
+    loading: readonly(loading),
+    error: readonly(error),
+    fetchTemplates,
     saveTemplate,
     updateTemplate,
     deleteTemplate,

app/pages/index.vue

@@ -63,7 +63,6 @@ onMounted(() => {
           <!-- En desktop: siempre mostrar constructor -->
           <template v-if="isDesktop || activeTab === 'constructor'">
             <ConstructorCommandBuilder />
-            <ConstructorQuickActions class="mt-4" />
           </template>
 
           <template v-else-if="activeTab === 'queue'">
@@ -85,14 +84,14 @@ onMounted(() => {
     <!-- Navegación mobile -->
     <LayoutMobileNavigation v-model="activeTab" />
 
-    <!-- Drawer para gestionar impresoras (desktop) -->
+    <!-- Modal para gestionar impresoras (desktop) -->
-    <UDrawer v-model:open="showPrintersDrawer" direction="right">
+    <UModal v-model:open="showPrintersDrawer">
       <template #header>
         <h3 class="text-lg font-semibold">Gestión de Impresoras</h3>
       </template>
-      <div class="p-4">
+      <template #body>
         <PrintersList />
-      </div>
+      </template>
-    </UDrawer>
+    </UModal>
   </div>
 </template>

server/api/templates/[id].delete.ts

@@ -0,0 +1,23 @@
+import { deleteTemplate } from '../../utils/templates'
+
+export default defineEventHandler(async (event) => {
+  const id = getRouterParam(event, 'id')
+
+  if (!id) {
+    throw createError({
+      statusCode: 400,
+      message: 'ID requerido'
+    })
+  }
+
+  const success = await deleteTemplate(id)
+
+  if (!success) {
+    throw createError({
+      statusCode: 404,
+      message: 'Template no encontrado'
+    })
+  }
+
+  return { success: true }
+})

server/api/templates/[id].get.ts

@@ -0,0 +1,23 @@
+import { getTemplateById } from '../../utils/templates'
+
+export default defineEventHandler(async (event) => {
+  const id = getRouterParam(event, 'id')
+
+  if (!id) {
+    throw createError({
+      statusCode: 400,
+      message: 'ID requerido'
+    })
+  }
+
+  const template = await getTemplateById(id)
+
+  if (!template) {
+    throw createError({
+      statusCode: 404,
+      message: 'Template no encontrado'
+    })
+  }
+
+  return template
+})

server/api/templates/[id].put.ts

@@ -0,0 +1,28 @@
+import { updateTemplate } from '../../utils/templates'
+
+export default defineEventHandler(async (event) => {
+  const id = getRouterParam(event, 'id')
+  const body = await readBody(event)
+
+  if (!id) {
+    throw createError({
+      statusCode: 400,
+      message: 'ID requerido'
+    })
+  }
+
+  const template = await updateTemplate(id, {
+    name: body.name,
+    description: body.description,
+    operations: body.operations
+  })
+
+  if (!template) {
+    throw createError({
+      statusCode: 404,
+      message: 'Template no encontrado'
+    })
+  }
+
+  return template
+})

server/api/templates/[id]/duplicate.post.ts

@@ -0,0 +1,23 @@
+import { duplicateTemplate } from '../../../utils/templates'
+
+export default defineEventHandler(async (event) => {
+  const id = getRouterParam(event, 'id')
+
+  if (!id) {
+    throw createError({
+      statusCode: 400,
+      message: 'ID requerido'
+    })
+  }
+
+  const template = await duplicateTemplate(id)
+
+  if (!template) {
+    throw createError({
+      statusCode: 404,
+      message: 'Template no encontrado'
+    })
+  }
+
+  return template
+})

server/api/templates/index.get.ts

@@ -0,0 +1,6 @@
+import { getAllTemplates } from '../../utils/templates'
+
+export default defineEventHandler(async () => {
+  const templates = await getAllTemplates()
+  return templates
+})

server/api/templates/index.post.ts

@@ -0,0 +1,27 @@
+import { createTemplate } from '../../utils/templates'
+
+export default defineEventHandler(async (event) => {
+  const body = await readBody(event)
+
+  if (!body.name) {
+    throw createError({
+      statusCode: 400,
+      message: 'El nombre es requerido'
+    })
+  }
+
+  if (!body.operations || !Array.isArray(body.operations)) {
+    throw createError({
+      statusCode: 400,
+      message: 'Las operaciones son requeridas'
+    })
+  }
+
+  const template = await createTemplate({
+    name: body.name,
+    description: body.description,
+    operations: body.operations
+  })
+
+  return template
+})

server/utils/templates.ts

@@ -0,0 +1,136 @@
+// Gestión de templates persistentes
+import { readFile, writeFile, mkdir } from 'fs/promises'
+import { existsSync } from 'fs'
+import { join } from 'path'
+
+export interface Operation {
+  id: string
+  type: 'text' | 'feed' | 'cut' | 'pulse' | 'image' | 'barcode' | 'qrcode'
+  params: Record<string, unknown>
+}
+
+export interface PrintTemplate {
+  id: string
+  name: string
+  description?: string
+  operations: Operation[]
+  createdAt: string
+  updatedAt: string
+}
+
+export interface TemplatesStore {
+  templates: PrintTemplate[]
+}
+
+// Directorio de datos persistentes
+const DATA_DIR = join(process.cwd(), 'data')
+const TEMPLATES_FILE = join(DATA_DIR, 'templates.json')
+
+// Asegurar que el directorio existe
+async function ensureDataDir(): Promise<void> {
+  if (!existsSync(DATA_DIR)) {
+    await mkdir(DATA_DIR, { recursive: true })
+  }
+}
+
+// Leer store de templates
+export async function readTemplatesStore(): Promise<TemplatesStore> {
+  await ensureDataDir()
+
+  try {
+    const data = await readFile(TEMPLATES_FILE, 'utf-8')
+    return JSON.parse(data)
+  } catch {
+    // Si no existe el archivo, retornar store vacío
+    return {
+      templates: []
+    }
+  }
+}
+
+// Guardar store de templates
+export async function writeTemplatesStore(store: TemplatesStore): Promise<void> {
+  await ensureDataDir()
+  await writeFile(TEMPLATES_FILE, JSON.stringify(store, null, 2), 'utf-8')
+}
+
+// Generar ID único
+function generateId(): string {
+  return `template_${Date.now()}_${Math.random().toString(36).substring(2, 9)}`
+}
+
+// CRUD Operations
+
+export async function getAllTemplates(): Promise<PrintTemplate[]> {
+  const store = await readTemplatesStore()
+  return store.templates
+}
+
+export async function getTemplateById(id: string): Promise<PrintTemplate | null> {
+  const store = await readTemplatesStore()
+  return store.templates.find(t => t.id === id) || null
+}
+
+export async function createTemplate(data: {
+  name: string
+  description?: string
+  operations: Operation[]
+}): Promise<PrintTemplate> {
+  const store = await readTemplatesStore()
+
+  const now = new Date().toISOString()
+  const template: PrintTemplate = {
+    id: generateId(),
+    name: data.name,
+    description: data.description || '',
+    operations: data.operations,
+    createdAt: now,
+    updatedAt: now
+  }
+
+  store.templates.push(template)
+  await writeTemplatesStore(store)
+  return template
+}
+
+export async function updateTemplate(id: string, data: Partial<{
+  name: string
+  description: string
+  operations: Operation[]
+}>): Promise<PrintTemplate | null> {
+  const store = await readTemplatesStore()
+  const index = store.templates.findIndex(t => t.id === id)
+
+  if (index === -1) return null
+
+  store.templates[index] = {
+    ...store.templates[index],
+    ...data,
+    updatedAt: new Date().toISOString()
+  }
+
+  await writeTemplatesStore(store)
+  return store.templates[index]
+}
+
+export async function deleteTemplate(id: string): Promise<boolean> {
+  const store = await readTemplatesStore()
+  const index = store.templates.findIndex(t => t.id === id)
+
+  if (index === -1) return false
+
+  store.templates.splice(index, 1)
+  await writeTemplatesStore(store)
+  return true
+}
+
+export async function duplicateTemplate(id: string): Promise<PrintTemplate | null> {
+  const template = await getTemplateById(id)
+  if (!template) return null
+
+  return createTemplate({
+    name: `${template.name} (copia)`,
+    description: template.description,
+    operations: JSON.parse(JSON.stringify(template.operations))
+  })
+}