fix(cli): resolve argparse naming conflict

The MCP configure command had a critical argparse naming conflict where
the --command flag (for server command) was overwriting the top-level
'command' dest (which should be 'mcp'). This caused the CLI routing
logic to fail because args.command would be 'python' instead of 'mcp'.

Changes:
- Added dest='server_command' to --command argument in configure parser
- Updated handler call to use args.server_command instead of args.command
- Fixed test_configure_argument_parsing_basic to handle SystemExit properly
- Fixed test_configure_argument_parsing_with_options CLI arguments

This resolves the issue where 'hatch mcp configure' commands would
display help instead of executing the configuration.

Author: LittleCoinCoin

hatch/cli_hatch.py

@@ -1109,7 +1109,7 @@ def main():
 
     # Create mutually exclusive group for server type
     server_type_group = mcp_configure_parser.add_mutually_exclusive_group(required=True)
-    server_type_group.add_argument("--command", help="Command to execute the MCP server (for local servers)")
+    server_type_group.add_argument("--command", dest="server_command", help="Command to execute the MCP server (for local servers)")
     server_type_group.add_argument("--url", help="Server URL for remote MCP servers")
 
     mcp_configure_parser.add_argument("--args", nargs="*", help="Arguments for the MCP server command (only with --command)")
@@ -1785,7 +1785,7 @@ def main():
 
         elif args.mcp_command == "configure":
             return handle_mcp_configure(
-                args.host, args.server_name, args.command, args.args,
+                args.host, args.server_name, args.server_command, args.args,
                 getattr(args, 'env_var', None), args.url, args.headers, args.no_backup,
                 args.dry_run, args.auto_approve
             )