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_reactions.py

@@ -3,7 +3,6 @@ from __future__ import annotations
 from adapter.matrix.reactions import (
     build_confirmation_text,
     build_skills_text,
-    reaction_to_skill_index,
 )
 from sdk.interface import UserSettings
 
@@ -20,6 +19,10 @@ def test_build_skills_text():
     assert "web-search" in text
     assert "fetch-url" in text
     assert "!skill on/off" in text
+    assert "1️⃣" not in text
+    assert "2️⃣" not in text
+    assert "👍" not in text
+    assert "❌" not in text
 
 
 def test_build_confirmation_text():
@@ -27,8 +30,3 @@ def test_build_confirmation_text():
     assert "Отправить письмо?" in text
     assert "!yes" in text
     assert "!no" in text
-
-
-def test_reaction_to_skill_index():
-    assert reaction_to_skill_index("1️⃣") == 1
-    assert reaction_to_skill_index("👍") is None