i'd like to know what exactly should i input in the projectile_immunity_whitelist lines inside the config to make the bosses not reflect arrows?

i've tried from entity id, tags, to the item ids of the arrows and bows themselves but none seem to work. an example comment on how it should be written would be a pretty great addition to the configs as well imo

You actually only need the id of the projectile without the full path. I'll make it so that both should work though later on, having tags sounds practical too.

So for example, if you want to whitelist regular arrows, just add "arrow" to the list. If you want to whitelist big moonlight projectiles (from the Moonlight Greatsword), add "big_moonlight_projectile" to the list.

Writing "soulsweapons:big_moonlight_projectile" or "minecraft:arrow" should've worked too, but a bug is preventing that. Regardless, adding the main id works, hope this helps!