- properly embed navmesh saving and loading in SaveRestore flow - use proper override save/load path if set - use debugEx to not extract stackTrace when logging - respect nav_disable convar - fix empty tiles being null after loading from save, no tile should ever be null even if empty, this causes issue when queuing for rebuild at runtime - consolidate redundant code paths into navmesh init, and add tile - skip saving if navmesh was never built