feat: add parapharmacy API with MongoDB and N8N setup

- Create parapharmacy-api microservice with Express + Swagger + MongoDB
- Add product model with full-text search and deduplication
- Add CRUD endpoints and bulk upsert for scrapers
- Update docker-compose.yml with MongoDB, N8N, and parapharmacy-api services
- Add proxy endpoints in FarmaFinder backend for parapharmacy
- Update frontend services to use parapharmacy API
- Add Swagger documentation at /api/docs

apps/parapharmacy-api/src/config.js

@@ -0,0 +1,22 @@
+export const config = {
+  port: process.env.PORT || 3002,
+  mongodb: {
+    uri: process.env.MONGODB_URI || 'mongodb://localhost:27017/parapharmacy',
+  },
+  cors: {
+    origin: process.env.CORS_ORIGIN || 'http://localhost:3000',
+    credentials: true,
+  },
+  rateLimit: {
+    windowMs: 60 * 1000, // 1 minute
+    max: 100, // limit each IP to 100 requests per windowMs
+  },
+  sources: [
+    { id: 'promofarma', name: 'Promofarma', url: 'https://www.promofarma.com' },
+    { id: 'pharmarket', name: 'Pharmarket', url: 'https://www.pharmarket.es' },
+    { id: 'docmorris', name: 'DocMorris', url: 'https://www.docmorris.es' },
+    { id: '1001farma', name: '1001Farma', url: 'https://www.1001farma.net' },
+    { id: 'primor', name: 'Primor', url: 'https://www.primor.eu' },
+    { id: 'mifarma', name: 'MiFarma', url: 'https://www.mifarma.es' },
+  ],
+};