- In lore, zombies are thought by bots to be animals; animals are not shot.
- There are turrets at roadblocks, which happen to be in village centers.
About the modding question; try adding a category on robots in monsters.json;
for example: “name”: “tankbot”,
… (meant to tell you to put “category” at bottom of string)
“category”: “ROBOTS”
Got no idea if it works or if you must define the category, but it should.
After that, make a mod, and in modinfo.json, define a monster_blacklist, with “category”: [“ROBOTS”]. That should work.