Fix: pass explicit prompts to SegConfig in UAV_VisLoc script

SegConfig(prompts=None) crashes on len(None) when gin config is not
loaded. Pass the 11-class prompt list directly.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

scripts/run_uav_visloc.py

@@ -73,7 +73,11 @@ def main() -> None:
     )
 
     input_conf = InputConfig(image_size=256)
-    seg_conf = SegConfig()
+    seg_conf = SegConfig(prompts=[
+        "background", "building", "road", "vegetation", "water",
+        "sand and gravel ground", "rocky terrain", "farmland",
+        "railway", "parking lot", "sidewalk",
+    ])
     models_conf = ModelsConfig()
 
     setup_logging(