was how they could perhaps create some sort of campaign website to try and incide violence among migrants,

We had that exact thing here in South Africa in the late 80s and early 90s - the only difference was that it was actually enabled by the Apartheid-state through their terrorist proxies (ie, mainly the South African Police). When the anti-Apartheid groups didn't act "terroristic" enough for their taste, they just did it themselves and used the media to create a narrative of "black-on-black violence" to try and destabilize the country.

Like, how do you reconcile your “patriotism and love for your country” with wanting people to perform terror attacks?

They "love" their countries in the same way that a rapist "loves" his victims - the feel themselves entitled to it and deserving of holding the power of life and death over it. They do not actually care about the real people living in Sweden in any way whatsoever. That's pretty much standard fare when it comes to far right-wing ideology no matter what part of the world you find them in.

The reason they want to "incite" (so-called) "terror attacks" among migrants they see as not "white," "Swedish" or "Nordic" enough is two-fold.

Firstly, they want the Swedish people to see these migrants the way they see them - as a (supposedly) bloodthirsty and rapacious "other." Not much different from the way the Nazis portrayed the "Jewish-Bolshevik hordes" before and during WW2. A (supposed) "terror attack" that can be blamed on the "other" will essentially result in the media performing this function for them.

Secondly, they want an atmosphere of panic - such as existed right after 9/11 in the US. They know that such a state of things will allow their ideology to suddenly seem "relevant" in the same way that militarism suddenly became standard fare in the US afterwards.