Fixed 3 waypoints not marked as doors.

Fixed several Pathfinding issues for Bots stuck Repairing hull.
Bot shuttle to Ship pathfinding fixed, again.

Gameplay: Removed radiation hazards from standing in the reactor coolant pool or near the spent fuel hopper in aft ballast. (Realistic but wasnt fun).

Fixed some layering issues,
Set minimum voltage on deconstructors, fabricators, to 40% to prevent stuttering when setting fuel economy to exactly 50%
Oxygen Generator Minimum voltage to 20%, so sub can remain habitable on 25% fuel economy.

Fixed no power to oxygen tanks in engine room.
Made sure bottom airlock pumps are tamper proof

changed background description.

Cosmetics and wiring pass.
Emptied toxin cabinet.
Pathfinding reworked / solved for Bots acess to manta.

Wiring finalised (?), hiding relays, signal checks and wifi modules.
Fixed Layering issue in reactor room junction boxes.