fix: stop panel description churn

tests/test_panel_identity_description.py

@@ -3,7 +3,7 @@ from types import SimpleNamespace
 from bot.services.subscription_service_impl.panel_identity import PanelIdentityMixin
 
 
-def test_subscription_panel_description_excludes_email():
+def test_subscription_panel_identity_payload_excludes_description_updates():
     user = SimpleNamespace(
         email="linked@example.com",
         username="alice",
@@ -15,6 +15,19 @@ def test_subscription_panel_description_excludes_email():
 
     payload = PanelIdentityMixin()._panel_identity_payload_for_user(user)
 
-    assert payload["description"] == "alice\nAlice\nSmith"
+    assert "description" not in payload
     assert payload["email"] == "linked@example.com"
     assert payload["telegramId"] == 42
+
+
+def test_subscription_panel_description_filters_broken_lines_for_creation():
+    user = SimpleNamespace(
+        email="linked@example.com",
+        username="alice??",
+        first_name="????",
+        last_name="Smith",
+        telegram_id=42,
+        user_id=42,
+    )
+
+    assert PanelIdentityMixin()._panel_description_for_user(user) == "alice??\nSmith"