Refactor command handling

This now supports usage/help texts

tests/packages/sshd/conftest.py

@@ -82,10 +82,13 @@ async def mock_backend(client_registry: ClientRegistry) -> MagicMock:
                 "Error, must have a client called template for this to work."
             )
         clients_data[name] = clients_data["template"]
+        template_secrets: dict[str, str] = {}
         for secret_key, secret in secrets_data.items():
             s_client, secret_name = secret_key
             if s_client != "template":
                 continue
+            template_secrets[secret_name] = secret
+        for secret_name, secret in template_secrets.items():
             secrets_data[(name, secret_name)] = secret
 
     async def write_audit(*args, **kwargs):