Robot spawn on water

app.py

@@ -494,7 +494,7 @@ def _pipeline(uid,img_path):
 
     # 3- Robot initialization, position and navigation
     # find all (y,x) within movable_mask
-    ys, xs = np.where(movable_mask)
+    ys, xs = np.where(water_mask)
     if len(ys)==0:
         # no travelable zone → bail out
         print(f"❌ [{uid}] no water to spawn on")