That strip of moulding in the middle is mounted to the left door so it swing open with it…
It’s hard to tell form the pic. Are these 2 doors that close and meet in the middle? Don’t know what that middle piece is. Is that permanent and is what the doors latch to?
If so, you may need to sensors… one for each inside corner that when doors open it breaks the magnet contact.
Yes, they meet in the middle and that piece is permanent and attached to the left door.
Why not mount it just left of the middle moulding, facing up ?