test: fix stale CI assumptions in parser and quick-command coverage (#1236)

- update managed-server compatibility tests to match the current
  ServerManager.tool_parser wiring used by hermes_base_env
- make quick-command CLI assertions accept Rich Text objects, which is how
  ANSI-safe output is rendered now
- set HERMES_HOME explicitly in the Discord auto-thread config bridge test
  so it loads the intended temporary config file

Validated with the targeted test set and the full pytest suite.

tests/gateway/test_discord_slash_commands.py

@@ -425,6 +425,7 @@ def test_discord_auto_thread_config_bridge(monkeypatch, tmp_path):
     }))
 
     monkeypatch.delenv("DISCORD_AUTO_THREAD", raising=False)
+    monkeypatch.setenv("HERMES_HOME", str(hermes_dir))
     monkeypatch.setattr(Path, "home", lambda: tmp_path)
 
     from gateway.config import load_gateway_config