Поиск: case-insensitive сравнение в logic_search

- сопоставление имени/описания календарей приведено к lowercase
- юнит-тесты: 20/20

test/unit/logic_search_tests.erl

@@ -20,6 +20,7 @@ logic_search_test_() ->
     fun cleanup/1,
     [
       {"Search events by text", fun test_search_events_by_text/0},
+      {"Cyrillic case-insensitive search", fun test_search_cyrillic_case_insensitive/0},
       {"Search events by tags", fun test_search_events_by_tags/0},
       {"Search events by date range", fun test_search_events_by_date/0},
       {"Search events by location", fun test_search_events_by_location/0},
@@ -106,6 +107,21 @@ test_search_events_by_text() ->
   {Total2, _} = events_from(logic_search:search(<<"event">>, <<"conference">>, OwnerId, Params)),
   ?assertEqual(1, Total2).
 
+%% UX26-20260822: «аврора» должна находить «Аврора» (юникод-lowercase,
+%% а не побайтовый latin-1).
+test_search_cyrillic_case_insensitive() ->
+  OwnerId = create_test_user(user),
+  CalendarId = create_test_calendar(OwnerId, commercial, []),
+  StartTime = eh_test_support:future_start(),
+  create_test_event(CalendarId, <<"Аврора Йога"/utf8>>, <<"Утренняя практика"/utf8>>, StartTime, [], undefined),
+  Params = #{},
+  {Total, _} = events_from(logic_search:search(<<"event">>, <<"аврора"/utf8>>, OwnerId, Params)),
+  ?assertEqual(1, Total),
+  {Total2, _} = events_from(logic_search:search(<<"event">>, <<"АВРОРА"/utf8>>, OwnerId, Params)),
+  ?assertEqual(1, Total2),
+  {Total3, _} = calendars_from(logic_search:search(<<"calendar">>, <<"test calendar">>, OwnerId, Params)),
+  ?assertEqual(1, Total3).
+
 test_search_events_by_tags() ->
   OwnerId = create_test_user(user),
   CalendarId = create_test_calendar(OwnerId, commercial, []),