fix(test): add missing session_id and _pending_input to _make_cli fixture

CI failure: test_skill_command_prefix_matches raised AttributeError because
HermesCLI.__new__ skips __init__, leaving session_id and _pending_input unset.
These are accessed when skill command dispatch runs in the CI environment.

tests/test_cli_prefix_matching.py

@@ -9,6 +9,8 @@ def _make_cli():
     cli_obj.console = MagicMock()
     cli_obj.agent = None
     cli_obj.conversation_history = []
+    cli_obj.session_id = None
+    cli_obj._pending_input = MagicMock()
     return cli_obj