refactor(cli): move pretrained registry import to module scope

Authored by OpenClaw (model: custom-chat-jinzhezeng-group/gpt-5.3-codex)

Author: njzjz-bot

deepmd/main.py

@@ -20,6 +20,9 @@
 from deepmd.backend.backend import (
     Backend,
 )
+from deepmd.pretrained.registry import (
+    available_model_names,
+)
 
 try:
     from deepmd._version import version as __version__
@@ -958,9 +961,6 @@ def main_parser() -> argparse.ArgumentParser:
         "download",
         help="Download one pretrained model",
     )
-    from deepmd.pretrained.registry import (
-        available_model_names,
-    )
 
     parser_pretrained_download.add_argument(
         "MODEL",