test(01-06): add failing matrix command-only regressions

- Assert skills text no longer includes reaction-era labels
- Require converter to drop reaction callback support
- Lock !settings dashboard to read-only snapshot copy

tests/adapter/matrix/test_dispatcher.py

@@ -165,6 +165,9 @@ async def test_mat11_settings_returns_dashboard():
     assert len(result) >= 1
     text = result[0].text
     assert "Скиллы" in text or "скиллы" in text.lower()
-    assert "Изменить" in text or "!skills" in text
+    assert "Личность" in text
+    assert "Безопасность" in text
+    assert "Активные чаты" in text
+    assert "Изменить" not in text
     assert "!connectors" not in text
     assert "!whoami" not in text