fix(console): keep conversation updated_at unchanged when marking read (#32133)

api/tests/unit_tests/controllers/console/app/test_conversation_read_timestamp.py

@@ -0,0 +1,34 @@
+from datetime import datetime
+from types import SimpleNamespace
+from unittest.mock import MagicMock, patch
+
+from controllers.console.app.conversation import _get_conversation
+
+
+def test_get_conversation_mark_read_keeps_updated_at_unchanged():
+    app_model = SimpleNamespace(id="app-id")
+    account = SimpleNamespace(id="account-id")
+    conversation = MagicMock()
+    conversation.id = "conversation-id"
+
+    with (
+        patch("controllers.console.app.conversation.current_account_with_tenant", return_value=(account, None)),
+        patch("controllers.console.app.conversation.naive_utc_now", return_value=datetime(2026, 2, 9, 0, 0, 0)),
+        patch("controllers.console.app.conversation.db.session") as mock_session,
+    ):
+        mock_session.query.return_value.where.return_value.first.return_value = conversation
+
+        _get_conversation(app_model, "conversation-id")
+
+        statement = mock_session.execute.call_args[0][0]
+        compiled = statement.compile()
+        sql_text = str(compiled).lower()
+        compact_sql_text = sql_text.replace(" ", "")
+        params = compiled.params
+
+        assert "updated_at=current_timestamp" not in compact_sql_text
+        assert "updated_at=conversations.updated_at" in compact_sql_text
+        assert "read_at=:read_at" in compact_sql_text
+        assert "read_account_id=:read_account_id" in compact_sql_text
+        assert params["read_at"] == datetime(2026, 2, 9, 0, 0, 0)
+        assert params["read_account_id"] == "account-id"