tree using module instead of modules

docforge/cli/commands.py

@@ -127,28 +127,27 @@ def serve(
 
 @cli.command()
 @click.option(
-    "--modules",
-    multiple=True,
+    "--module",
     required=True,
-    help="Python module import paths to introspect",
+    help="Python module import path to introspect",
 )
 @click.option(
     "--project-name",
-    help="Project name (defaults to first module)",
+    help="Project name (defaults to specified module)",
 )
 def tree(
-    modules: Sequence[str],
+    module: str,
     project_name: Optional[str],
 ) -> None:
     """
     Visualize the project structure in the terminal.
 
     Args:
-        modules: List of module import paths to recursively introspect.
+        module: The module import path to recursively introspect.
         project_name: Optional override for the project name shown at the root.
     """
     loader = GriffeLoader()
-    project = loader.load_project(list(modules), project_name)
+    project = loader.load_project([module], project_name)
 
     click.echo(project.name)