feat(integrations): setup integrations service structure

Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>

services/integrations/Dockerfile

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+FROM python:3.11-slim
+
+WORKDIR /app
+
+COPY requirements.txt .
+RUN pip install --no-cache-dir -r requirements.txt
+
+COPY ./app ./app
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8002"]

services/integrations/app/__init__.py

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+# Integrations Service

services/integrations/app/config.py

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+from pydantic_settings import BaseSettings
+from functools import lru_cache
+
+
+class Settings(BaseSettings):
+    # Odoo Connection
+    ODOO_URL: str = ""
+    ODOO_DB: str = ""
+    ODOO_USER: str = ""
+    ODOO_API_KEY: str = ""
+
+    # Internal Services
+    API_GATEWAY_URL: str = "http://localhost:8000"
+    FLOW_ENGINE_URL: str = "http://localhost:8001"
+
+    class Config:
+        env_file = ".env"
+
+
+@lru_cache
+def get_settings() -> Settings:
+    return Settings()

services/integrations/app/main.py

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+from fastapi import FastAPI
+from fastapi.middleware.cors import CORSMiddleware
+
+app = FastAPI(title="WhatsApp Central - Integrations Service")
+
+app.add_middleware(
+    CORSMiddleware,
+    allow_origins=["*"],
+    allow_credentials=True,
+    allow_methods=["*"],
+    allow_headers=["*"],
+)
+
+
+@app.get("/health")
+def health_check():
+    return {"status": "healthy", "service": "integrations"}

services/integrations/requirements.txt

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+fastapi==0.109.0
+uvicorn[standard]==0.27.0
+pydantic==2.5.3
+pydantic-settings==2.1.0
+httpx==0.26.0
+python-multipart==0.0.6