Pallet Truck Package

Common packages for pallet_truck, including messages and robot description. These are packages relevant to all pallet_truck workspaces, whether simulation, desktop, or on the robot's own headless PC.

Links to read about each individual pkg - pallet_truck_bringup - pallet_truck_control - pallet_truck_description - pallet_truck_navigation

prefix is used to publish unique base link names of each robot agent to /tf. This way they are all visible in rviz and probably it is used for odometry done by aruco localization.
namespace is used to separate nodes and topics related to each robot agent. This way we can control each robot separately and run a separate nav2 stack.

Keep in mind that the value of namespace is used for prefix but they are different concepts and use cases.