fix: product detail view for parapharmacy products

- Updated ProductView to use correct endpoint for parapharmacy
- Updated getProduct service to handle parapharmacy products
- Shows price, category, brand, source for parapharmacy products
- Updated labels from 'OFF' to 'Parafarmacia'

apps/frontend-mobile/app/product/[source]/[id].tsx

@@ -62,7 +62,7 @@ export default function ProductDetailScreen() {
         <View style={styles.nameRow}>
           <Text style={[styles.name, { color: colors.text }]}>{product.name}</Text>
           <View style={[styles.badge, { backgroundColor: isCima ? '#2b5bb5' : '#4caf50' }]}>
-            <Text style={styles.badgeText}>{isCima ? 'CIMA' : 'OFF'}</Text>
+            <Text style={styles.badgeText}>{isCima ? 'CIMA' : 'Parafarmacia'}</Text>
           </View>
         </View>
         {product.brand ? (
@@ -92,21 +92,21 @@ export default function ProductDetailScreen() {
         </View>
       ) : (
         <View style={[styles.infoSection, { backgroundColor: colors.card }]}>
-          <Text style={[styles.sectionTitle, { color: colors.text }]}>Información nutricional</Text>
-          {product.nutriscore && (
-            <InfoRow label="Nutri-Score" value={product.nutriscore.toUpperCase()} colors={colors} />
+          <Text style={[styles.sectionTitle, { color: colors.text }]}>Información del producto</Text>
+          {product.price != null && (
+            <InfoRow label="Precio" value={`${product.price} €`} colors={colors} />
           )}
-          {product.nova_group != null && (
-            <InfoRow label="Grupo NOVA" value={String(product.nova_group)} colors={colors} />
+          {product.original_price != null && product.original_price > (product.price || 0) && (
+            <InfoRow label="Precio anterior" value={`${product.original_price} €`} colors={colors} />
           )}
-          {product.eco_score && (
-            <InfoRow label="Eco-Score" value={product.eco_score.toUpperCase()} colors={colors} />
+          {product.category && (
+            <InfoRow label="Categoría" value={product.category} colors={colors} />
           )}
-          {product.ingredients && (
-            <View style={[styles.infoRow, { borderBottomColor: colors.border }]}>
-              <Text style={[styles.infoLabel, { color: colors.textSecondary }]}>Ingredientes</Text>
-              <Text style={[styles.infoValueMultiline, { color: colors.text }]}>{product.ingredients}</Text>
-            </View>
+          {product.brand && (
+            <InfoRow label="Marca" value={product.brand} colors={colors} />
+          )}
+          {product.source_url && (
+            <InfoRow label="Fuente" value={product.source || 'Parafarmacia'} colors={colors} />
           )}
         </View>
       )}