feat(01-06): remove matrix reaction-era adapter UX

- Drop reaction-based skill and confirmation helpers from Matrix conversion
- Render !settings as a strict read-only dashboard snapshot
- Align Matrix adapter regressions with command-only helper text

adapter/matrix/handlers/settings.py

@@ -60,8 +60,6 @@ async def handle_settings(
             "",
             f"Активные чаты ({len(chats)}):",
             chats_text,
-            "",
-            "Изменить: !skills, !soul, !safety",
         ]
     )