Perhaps you should ping the query to your travel agent, especially if the confirmation you received from them says nothing about baggage and/or mileage.

If you are on a Mini fare (and again, I don't know the AF side of the business any more, so I don't know if these are even possible on LHR-CDG-LHR - a route I've only ever flown on the A380!!!) then they really should alert you.