feat(matrix): add adapter baseline and platform-aware command hints

tests/adapter/matrix/test_reactions.py

@@ -0,0 +1,33 @@
+from __future__ import annotations
+
+from adapter.matrix.reactions import (
+    build_confirmation_text,
+    build_skills_text,
+    reaction_to_skill_index,
+)
+from sdk.interface import UserSettings
+
+
+def test_build_skills_text():
+    settings = UserSettings(
+        skills={"web-search": True, "fetch-url": False},
+        connectors={},
+        soul={},
+        safety={},
+        plan={},
+    )
+    text = build_skills_text(settings)
+    assert "web-search" in text
+    assert "fetch-url" in text
+    assert "Реакции 1️⃣-9️⃣" in text
+
+
+def test_build_confirmation_text():
+    text = build_confirmation_text("Отправить письмо?")
+    assert "Отправить письмо?" in text
+    assert "подтвердить" in text
+
+
+def test_reaction_to_skill_index():
+    assert reaction_to_skill_index("1️⃣") == 1
+    assert reaction_to_skill_index("👍") is None