Navigation Primitives — Shared Substrate

Foundation layer for mobile robot navigation. Consumed by:

• isaac-sim-robot-navigation: runtime navigation in custom scripts (RL policy, physics-vs-baked, GPU OOM).
• mobility-gen: two-phase MobilityGen SDG (record -> replay+render).
• occupancy-map: produces the map.yaml consumed here.

Read this first for any mobile-robot work, then jump to the specialization.

Shared NVIDIA APIs