fix: Add scipy dependency and fix config for Docker deployment

- Add scipy==1.11.4 for A/B testing statistical analysis
- Add SMTP config fields and extra="ignore" to Settings
- Remove obsolete 'version' attribute from docker-compose.yml

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

app/core/config.py

@@ -63,9 +63,16 @@ class Settings(BaseSettings):
     ODOO_PASSWORD: Optional[str] = None  # API key or password
     ODOO_SYNC_ENABLED: bool = False
 
+    # SMTP (Optional - for email notifications)
+    SMTP_HOST: Optional[str] = None
+    SMTP_PORT: int = 587
+    SMTP_USER: Optional[str] = None
+    SMTP_PASSWORD: Optional[str] = None
+
     class Config:
         env_file = ".env"
         case_sensitive = True
+        extra = "ignore"  # Ignore extra env vars not defined here
 
 
 # Instancia global de configuración