Wild beasts: cave bears and giant beetles in dens, tamed when beaten while a prison has room

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

src/wilds.rs

@@ -73,6 +73,8 @@ impl Game {
         }
         // giant mushrooms in the open: the underground's little wood
         self.grow_mushrooms(seed);
+        // and now and then a den of wild beasts
+        self.place_beasts(seed);
     }
 
     // a cavern: a few overlapping blobs, ragged edges