Chainbreaker: rare, very strong original creature (twin-axe cleave, restless without fights)

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

src/save.rs

@@ -125,7 +125,10 @@ mod tests {
             g.update(0.05); // the scouts warn 30 s before the wave
         }
         assert!(!g.planned_entries.is_empty());
-        let (ex, ey) = g.planned_entries[0];
+        let (cx, cy) = g.map.core;
+        g.spawn(crate::game::EK::Chainbreaker, false, (cx - 1) as f32 + 0.5, (cy - 1) as f32 + 0.5, 1);
+        g.spawn(crate::game::EK::Ogre, false, (cx + 4) as f32 + 0.5, (cy - 1) as f32 + 0.5, 1);
+        let (ex, ey) = (cx + 1, cy + 1);
         let mut cam = Cam::new(ex as f32 + 0.5, ey as f32 + 0.5);
         cam.zoom = 12.0;
         std::fs::write(path, to_json(&g, &cam, &Settings { language: "en".into(), ..Settings::default() })).unwrap();