Add a toggle button to include rocket silo inventories when creating blueprints. Silos in the blueprint will then have that same inventory ghosted in when stamped down, which construction bots will deliver.

Useful for speedrunning with blueprints, where you often prepare the mixed rocket loadouts as silo blueprints with ghost items for the construction bots to deliver. Instead of relying on autosend to send a whole rocket with 50 decider combinators, because your ship needs 1.

You can in theory already create such silo blueprints in the unmodded game. But if you wanted a stack of exactly 199 ghosted electronic circuits, there is no faster way to created the blueprint stack than to right-click 199 times. And you had no way of knowing when your ghosted load exceeded the rocket capacity.

See also: The website https://rocketcal.cc has a feature (contributed by Zulan) to create silos with blueprinted items from a spaceship blueprint.