chore: remove Open Food Facts (OFF) integration

- Remove off-service.js and off-service.test.js
- Remove OFF import from server.js
- Simplify /api/products/search to only use CIMA
- Remove 'openfoodfacts' from valid product sources
- Update frontend-mobile Product interface to remove OFF source
- Remove OFF env vars from .env.example
- Add PARAPHARMACY_API_URL to .env.example

OFF was replaced by the new parapharmacy-api microservice.

apps/backend/__tests__/off-service.test.js

@@ -1,107 +0,0 @@
-import { jest } from '@jest/globals'
-
-jest.unstable_mockModule('../redis-client.js', () => ({
-  default: {
-    get: jest.fn(async () => null),
-    setEx: jest.fn(async () => 'OK'),
-  },
-}))
-
-jest.unstable_mockModule('axios', () => ({
-  default: {
-    get: jest.fn(async () => ({ data: { products: [] } })),
-  },
-}))
-
-const { transformOFFProduct, searchBabyProducts, getBabyProductDetails } = await import('../off-service.js')
-
-describe('transformOFFProduct', () => {
-  test('transforms a valid OFF product to unified model', () => {
-    const offProduct = {
-      _id: '12345',
-      product_name: 'Baby Rice',
-      brands: 'Nestlé',
-      image_url: 'https://example.com/image.jpg',
-      nutriscore_grade: 'a',
-      ingredients_text: 'Rice, Iron, Vitamins',
-      nova_group: 1,
-      ecoscore_grade: 'b',
-      categories_tags: ['en:baby-foods', 'en:baby-rice'],
-    }
-
-    const result = transformOFFProduct(offProduct)
-
-    expect(result).toEqual({
-      id: '12345',
-      source: 'openfoodfacts',
-      name: 'Baby Rice',
-      brand: 'Nestlé',
-      category: 'baby_food',
-      image_url: 'https://example.com/image.jpg',
-      nutriscore: 'a',
-      ingredients: 'Rice, Iron, Vitamins',
-      nova_group: 1,
-      eco_score: 'b',
-    })
-  })
-
-  test('returns null for null/undefined input', () => {
-    expect(transformOFFProduct(null)).toBeNull()
-    expect(transformOFFProduct(undefined)).toBeNull()
-  })
-
-  test('returns null when missing required fields', () => {
-    expect(transformOFFProduct({ _id: '123' })).toBeNull()
-    expect(transformOFFProduct({ product_name: 'Test' })).toBeNull()
-  })
-
-  test('sets default brand to empty string when missing', () => {
-    const result = transformOFFProduct({
-      _id: '999',
-      product_name: 'Plain Product',
-    })
-    expect(result.brand).toBe('')
-    expect(result.image_url).toBeNull()
-    expect(result.nutriscore).toBeNull()
-    expect(result.ingredients).toBeNull()
-    expect(result.nova_group).toBeNull()
-    expect(result.eco_score).toBeNull()
-  })
-
-  test('detects baby_milk category from tags', () => {
-    const result = transformOFFProduct({
-      _id: '200',
-      product_name: 'Infant Formula',
-      categories_tags: ['en:infant-milk'],
-    })
-    expect(result.category).toBe('baby_milk')
-  })
-
-  test('detects baby_cereal category from tags', () => {
-    const result = transformOFFProduct({
-      _id: '300',
-      product_name: 'Baby Cereal',
-      categories_tags: ['en:baby-cereals'],
-    })
-    expect(result.category).toBe('baby_cereal')
-  })
-})
-
-describe('searchBabyProducts', () => {
-  test('returns empty array for short query', async () => {
-    const result = await searchBabyProducts('a')
-    expect(result).toEqual([])
-  })
-
-  test('returns empty array for null/empty query', async () => {
-    expect(await searchBabyProducts(null)).toEqual([])
-    expect(await searchBabyProducts('')).toEqual([])
-  })
-})
-
-describe('getBabyProductDetails', () => {
-  test('returns null for null barcode', async () => {
-    const result = await getBabyProductDetails(null)
-    expect(result).toBeNull()
-  })
-})

apps/backend/__tests__/server.test.js

@@ -6,11 +6,6 @@ jest.unstable_mockModule('../cima-service.js', () => ({
   searchOTC: jest.fn(async () => []),
 }))
 
-jest.unstable_mockModule('../off-service.js', () => ({
-  searchBabyProducts: jest.fn(async () => []),
-  getBabyProductDetails: jest.fn(async () => null),
-}))
-
 jest.unstable_mockModule('../farmacias-webhook-import.js', () => ({
   runFarmaciaWebhookImport: jest.fn(async () => ({})),
   DEFAULT_FARMACIAS_WEBHOOK: '',