fix(auth): keep Spotify logout from resetting model config

tests/hermes_cli/test_spotify_auth.py

@@ -88,6 +88,51 @@ def test_auth_spotify_status_command_reports_logged_in(capsys, monkeypatch: pyte
     assert "client_id: spotify-client" in output
 
 
+def test_spotify_logout_does_not_reset_model_provider(
+    tmp_path,
+    monkeypatch: pytest.MonkeyPatch,
+    capsys,
+) -> None:
+    monkeypatch.setenv("HERMES_HOME", str(tmp_path))
+    config_path = tmp_path / "config.yaml"
+    config_path.write_text(
+        "model:\n"
+        "  default: gemini-3-flash\n"
+        "  provider: custom:local\n"
+        "  base_url: http://localhost:11434/v1\n"
+        "  api_key: ${LOCAL_API_KEY}\n",
+        encoding="utf-8",
+    )
+
+    with auth_mod._auth_store_lock():
+        store = auth_mod._load_auth_store()
+        auth_mod._store_provider_state(
+            store,
+            "spotify",
+            {
+                "client_id": "spotify-client",
+                "access_token": "access-token",
+                "refresh_token": "refresh-token",
+                "expires_at": "2099-01-01T00:00:00+00:00",
+            },
+            set_active=False,
+        )
+        auth_mod._save_auth_store(store)
+
+    auth_mod.logout_command(SimpleNamespace(provider="spotify"))
+
+    output = capsys.readouterr().out
+    assert "Logged out of Spotify." in output
+    assert "Model provider configuration was unchanged." in output
+    assert auth_mod.get_provider_auth_state("spotify") is None
+    assert config_path.read_text(encoding="utf-8") == (
+        "model:\n"
+        "  default: gemini-3-flash\n"
+        "  provider: custom:local\n"
+        "  base_url: http://localhost:11434/v1\n"
+        "  api_key: ${LOCAL_API_KEY}\n"
+    )
+
 
 def test_spotify_interactive_setup_persists_client_id(
     tmp_path,