agrega checkbox para modo QR en UuidSelector

- Checkbox que cambia comportamiento del click en UUID cards
- Modo QR: muestra modal QR en lugar de redirigir
- Modo normal: comportamiento original de navegación
- Botón descriptivo que indica el modo actual
- Estilos responsive para móviles
- Facilita acceso a QR para usuarios sin click derecho

client/src/views/UuidSelector.vue

@@ -17,6 +17,16 @@
         <span class="search-icon">🔍</span>
       </div>
 
+      <!-- QR Mode Toggle -->
+      <div class="qr-mode-container">
+        <label class="qr-mode-label">
+          <input type="checkbox" v-model="qrMode" class="qr-mode-checkbox" />
+          <span class="qr-mode-text">
+            {{ qrMode ? '📱 Mostrar QR al hacer click' : '🎮 Ir al juego al hacer click' }}
+          </span>
+        </label>
+      </div>
+
       <!-- Loading State -->
       <div v-if="loading" class="loading">
         <div class="spinner"></div>
@@ -114,6 +124,7 @@ const loading = ref(true);
 const allUuids = ref<UuidInfo[]>([]);
 const searchQuery = ref('');
 const filteredUuids = ref<UuidInfo[]>([]);
+const qrMode = ref(false);
 const qrCanvas = ref<HTMLCanvasElement>();
 const printContainer = ref<HTMLElement>();
 
@@ -188,7 +199,16 @@ function formatUuid(uuid: string): string {
 }
 
 function selectUuid(uuid: string) {
-  router.push(`/${uuid}`);
+  if (qrMode.value) {
+    // Find the UUID info and show QR modal
+    const uuidInfo = allUuids.value.find(u => u.uuid === uuid);
+    if (uuidInfo) {
+      printQR(uuidInfo);
+    }
+  } else {
+    // Normal behavior: navigate to the UUID
+    router.push(`/${uuid}`);
+  }
 }
 
 function selectRandom() {
@@ -581,6 +601,65 @@ async function copyToClipboard() {
   opacity: 0.6;
 }
 
+/* QR Mode Toggle Styles */
+.qr-mode-container {
+  margin: 15px 0 25px 0;
+  display: flex;
+  justify-content: center;
+}
+
+.qr-mode-label {
+  display: flex;
+  align-items: center;
+  gap: 10px;
+  cursor: pointer;
+  padding: 12px 20px;
+  background: rgba(102, 126, 234, 0.1);
+  border-radius: 25px;
+  border: 2px solid transparent;
+  transition: all 0.3s ease;
+  user-select: none;
+}
+
+.qr-mode-label:hover {
+  background: rgba(102, 126, 234, 0.15);
+  border-color: rgba(102, 126, 234, 0.3);
+  transform: translateY(-1px);
+}
+
+.qr-mode-checkbox {
+  width: 18px;
+  height: 18px;
+  border: 2px solid #667eea;
+  border-radius: 4px;
+  background: white;
+  cursor: pointer;
+  transition: all 0.3s ease;
+  position: relative;
+}
+
+.qr-mode-checkbox:checked {
+  background: #667eea;
+  border-color: #667eea;
+}
+
+.qr-mode-checkbox:checked::after {
+  content: '✓';
+  position: absolute;
+  top: -2px;
+  left: 2px;
+  color: white;
+  font-size: 14px;
+  font-weight: bold;
+}
+
+.qr-mode-text {
+  font-size: 16px;
+  font-weight: 600;
+  color: #667eea;
+  transition: color 0.3s ease;
+}
+
 .uuids-grid {
   display: grid;
   grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
@@ -927,6 +1006,19 @@ async function copyToClipboard() {
     font-size: 2rem;
   }
   
+  .qr-mode-container {
+    margin: 10px 0 20px 0;
+  }
+  
+  .qr-mode-label {
+    padding: 10px 16px;
+    font-size: 14px;
+  }
+  
+  .qr-mode-text {
+    font-size: 14px;
+  }
+
   .uuids-grid {
     grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
   }