planemo gives confusing message on unknown command

[cthoyt]

I ran uvx planemo list (list is not actually a command) and got the following error message:

      Built glob2==0.7
█░░░░░░░░░░░░░░░░░░░ [9/93] zipstream-new==1.1.8                                                                                                                                       warning: The module `galaxy` is provided by more than one package, which causes an install race condition and can result in a broken module. Consider removing your dependency on either `galaxy-util` (v25.0.2) or `galaxy-tool-util` (v25.0.2).
████████░░░░░░░░░░░░ [39/93] tabulate==0.9.0                                                                                                                                           warning: The module `galaxy` is provided by more than one package, which causes an install race condition and can result in a broken module. Consider removing your dependency on either `galaxy-tool-util-models` (v25.0.2) or `galaxy-tool-util` (v25.0.2).
Installed 93 packages in 179ms
/Users/cthoyt/.cache/uv/archive-v0/Zk12WzPFXCeRzQp5yGFD7/lib/python3.13/site-packages/glob2/fnmatch.py:141: SyntaxWarning: invalid escape sequence '\Z'
  return '(?ms)' + res + '\Z'
Traceback (most recent call last):
  File "/Users/cthoyt/.cache/uv/archive-v0/Zk12WzPFXCeRzQp5yGFD7/lib/python3.13/site-packages/planemo/cli.py", line 75, in name_to_command
    mod = __import__(mod_name, None, None, ["cli"])
ModuleNotFoundError: No module named 'planemo.commands.cmd_list'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/Users/cthoyt/.cache/uv/archive-v0/Zk12WzPFXCeRzQp5yGFD7/bin/planemo", line 12, in <module>
    sys.exit(planemo())
             ~~~~~~~^^
  File "/Users/cthoyt/.cache/uv/archive-v0/Zk12WzPFXCeRzQp5yGFD7/lib/python3.13/site-packages/click/core.py", line 1442, in __call__
    return self.main(*args, **kwargs)
           ~~~~~~~~~^^^^^^^^^^^^^^^^^
  File "/Users/cthoyt/.cache/uv/archive-v0/Zk12WzPFXCeRzQp5yGFD7/lib/python3.13/site-packages/click/core.py", line 1363, in main
    rv = self.invoke(ctx)
  File "/Users/cthoyt/.cache/uv/archive-v0/Zk12WzPFXCeRzQp5yGFD7/lib/python3.13/site-packages/click/core.py", line 1824, in invoke
    cmd_name, cmd, args = self.resolve_command(ctx, args)
                          ~~~~~~~~~~~~~~~~~~~~^^^^^^^^^^^
  File "/Users/cthoyt/.cache/uv/archive-v0/Zk12WzPFXCeRzQp5yGFD7/lib/python3.13/site-packages/click/core.py", line 1871, in resolve_command
    cmd = self.get_command(ctx, cmd_name)
  File "/Users/cthoyt/.cache/uv/archive-v0/Zk12WzPFXCeRzQp5yGFD7/lib/python3.13/site-packages/planemo/cli.py", line 88, in get_command
    return name_to_command(name)
  File "/Users/cthoyt/.cache/uv/archive-v0/Zk12WzPFXCeRzQp5yGFD7/lib/python3.13/site-packages/planemo/cli.py", line 77, in name_to_command
    raise Exception(f"Problem loading command {name}, exception {e}")
Exception: Problem loading command list, exception No module named 'planemo.commands.cmd_list'

I guess it's doing some sketchy dynamic importing. Instead of writing the message like this, it should catch the ModuleNotFoundError and instead give a simpler message that says that there's no plugin for that command