While the blueprints may not be on the table, the idea of using the dense plasma focus (the reactor for focus fusion) for space propulsion is not new. See https://focusfusion.org/index.php/site/article/university_of_illinois_space_propulsion/. Focus fusion would work for propulsion, but you need a big power source for it. If we can get the fusion reactor to produce net energy, then you could use one reactor to generate electricity, and another one as the rocket, or some sort of setup like that.
