Function set_launch_remaps 

pub fn set_launch_remaps(
    table: &'static [LaunchRemap],
) -> Result<(), BadLaunchRemap>

Install the image’s launch remap table. Every executor reads it from then on, on every road (C and C++ registration, Executor::create_node’s handle).

Call it ONCE, at boot, before any executor registers an entity – the generated entry calls it before the board runner sets up any tier, because an rclcpp-shape constructor registers its entities immediately (issue 0255). A row that does not read (NULL or non-UTF-8 string) refuses the whole table and installs nothing.