📚 Documentação inicial do ALETHEIA

- MANUAL-PRODUTO.md: Manual do usuário final
- MANUAL-VENDAS.md: Estratégia comercial e vendas
- MANUAL-TECNICO.md: Infraestrutura e deploy
- README.md: Visão geral do projeto

backend/app/integrations/open_food_facts.py

@@ -0,0 +1,27 @@
+import httpx
+from typing import Optional
+
+async def fetch_product(barcode: str) -> Optional[dict]:
+    url = f"https://world.openfoodfacts.org/api/v2/product/{barcode}.json"
+    headers = {"User-Agent": "Aletheia/1.0 (contato@aletheia.app)"}
+    try:
+        async with httpx.AsyncClient(timeout=10) as client:
+            resp = await client.get(url, headers=headers)
+            if resp.status_code != 200:
+                return None
+            data = resp.json()
+            if data.get("status") != 1:
+                return None
+            p = data["product"]
+            return {
+                "name": p.get("product_name") or p.get("product_name_pt") or "Produto desconhecido",
+                "brand": p.get("brands", ""),
+                "category": p.get("categories", ""),
+                "ingredients_text": p.get("ingredients_text") or p.get("ingredients_text_pt") or "",
+                "nutri_score": (p.get("nutriscore_grade") or "").lower(),
+                "nova_group": p.get("nova_group"),
+                "nutrition": p.get("nutriments", {}),
+                "image_url": p.get("image_url", ""),
+            }
+    except Exception:
+        return None