Some kind of cast jamming (i.e. preventing somebody from blinking into your room, breaking your walls...) would be really nice to have.

If you're willing to install botania and psionic upgrades, you can actually do this already.

Thanks

I didn't see any cast jam options in the upgrade mod, did I miss something?
I seen some other spells for Botania and other useful spells however, I did not see any that could prevent a player from breaking or entering an area per the original request above.

there are potions to prevent someone from using psy spells. but no mods afaik provide some kind of "real" cast jamming. Would be cool to have some forcefield-y cast jamming.

Perhaps an antinite ore, or the ability to configure certain spells for pseudo cast jamming as described in the light novel

Use obsidian walls, psi spells can't break though by default. For blinking: make the walls thick.