Add unified product search routes (CIMA OTC + Open Food Facts)

- GET /api/products/search?q={query} - parallel search across both sources
- GET /api/products/:source/:id - product detail by source (cima/openfoodfacts)
- Uses Promise.allSettled for fault-tolerant parallel search
- Added imports for searchOTC and OFF service functions

apps/backend/server.js

@@ -19,7 +19,8 @@ import pinoHttp from 'pino-http';
 import multer from 'multer';
 import { createWorker } from 'tesseract.js';
 import { BarcodeDetector } from 'barcode-detector';
-import { searchMedicines, getMedicineDetails } from './cima-service.js';
+import { searchMedicines, getMedicineDetails, searchOTC } from './cima-service.js';
+import { searchBabyProducts, getBabyProductDetails } from './off-service.js';
 import { runFarmaciaWebhookImport, DEFAULT_FARMACIAS_WEBHOOK, importPharmaciesFromRows } from './farmacias-webhook-import.js';
 import { fetchPharmaciesExternal } from '../API/index.js';
 
@@ -598,6 +599,54 @@ app.get('/api/medicines/:medicineId', async (req, res) => {
   }
 });
 
+// ========== UNIFIED PRODUCT SEARCH ==========
+
+app.get('/api/products/search', async (req, res) => {
+  try {
+    const { q } = req.query;
+    if (!q || q.trim().length < 2) {
+      return res.json({ results: [], total: 0 });
+    }
+    const searchTerm = q.trim();
+    const [cimaResults, offResults] = await Promise.allSettled([
+      searchOTC(searchTerm),
+      searchBabyProducts(searchTerm)
+    ]);
+    const cimaProducts = cimaResults.status === 'fulfilled' ? cimaResults.value : [];
+    const offProducts = offResults.status === 'fulfilled' ? offResults.value : [];
+    const allProducts = [...cimaProducts, ...offProducts]
+      .sort((a, b) => a.name.localeCompare(b.name));
+    res.json({
+      results: allProducts,
+      total: allProducts.length,
+      sources: { cima: cimaProducts.length, openfoodfacts: offProducts.length }
+    });
+  } catch (err) {
+    console.error('[Products] Search error:', err);
+    res.status(500).json({ error: 'Error searching products' });
+  }
+});
+
+app.get('/api/products/:source/:id', async (req, res) => {
+  try {
+    const { source, id } = req.params;
+    if (source === 'cima') {
+      const product = await getMedicineDetails(id);
+      if (!product) return res.status(404).json({ error: 'Product not found' });
+      return res.json({ ...product, source: 'cima', category: 'otc' });
+    }
+    if (source === 'openfoodfacts') {
+      const product = await getBabyProductDetails(id);
+      if (!product) return res.status(404).json({ error: 'Product not found' });
+      return res.json(product);
+    }
+    res.status(400).json({ error: 'Invalid source' });
+  } catch (err) {
+    console.error('[Products] Detail error:', err);
+    res.status(500).json({ error: 'Error fetching product details' });
+  }
+});
+
 // ========== AUTHENTICATION MIDDLEWARE ==========
 
 // Middleware to check if user is authenticated