fix(01-04): update matrix dispatcher and reaction tests

- rewrite invite/new-chat assertions for Space-based Matrix flow
- replace legacy reaction text checks with !skill on/off expectations
- validate confirmation text against !yes and !no prompts

tests/adapter/matrix/test_reactions.py

@@ -19,13 +19,14 @@ def test_build_skills_text():
     text = build_skills_text(settings)
     assert "web-search" in text
     assert "fetch-url" in text
-    assert "Реакции 1️⃣-9️⃣" in text
+    assert "!skill on/off" in text
 
 
 def test_build_confirmation_text():
     text = build_confirmation_text("Отправить письмо?")
     assert "Отправить письмо?" in text
-    assert "подтвердить" in text
+    assert "!yes" in text
+    assert "!no" in text
 
 
 def test_reaction_to_skill_index():