Goal:
1. Replace standard door to bathroom with a pocket door
2. Use existing door slab
3. Adapt standard door lock to pocket door latch

No problem framing the pocket door, but for the sake of economy:

I'd like to use the existing door panel, there will of course be holes for the
knobs and latch mechanism. Is there anything on the market that allows
replacement of the old latch set with a pocket door latch-one that would allow
the door to fully retract in to the wall?