Fix

app/__init__.py

@@ -34,6 +34,11 @@ def create_app():
             spec.loader.exec_module(mod)
             if hasattr(mod, 'bp'):
                 app.register_blueprint(mod.bp)
+                
+    # Register CLI commands if the plugin has any
+    if hasattr(mod, 'cli_commands'):
+        for command in mod.cli_commands:
+            app.cli.add_command(command)
 
     return app