fix(ct): teardown litter users/calendars after API suites

Track users/calendars created via register_and_login and create_calendar;
soft-delete via admin API in end_per_suite. Skip with CT_KEEP_DATA=1.
Safety-net soft-deletes remaining @test.local users.

Fixes EventHub/EventHubBack#65

test/api_users_SUITE.erl

@@ -55,6 +55,7 @@ all() ->
 %% @doc Инициализация сьюта.
 %% В локальном режиме запускает приложение EventHub.
 init_per_suite(Config) ->
+  ok = api_test_runner:reset_litter_tracker(),
   case os:getenv("CT_MODE", "local") of
     "remote" ->
       ct:pal("Remote mode: assuming application is already running"),
@@ -81,8 +82,11 @@ init_per_suite(Config) ->
       end
   end.
 
-%% @doc Завершение сьюта. В локальном режиме останавливает приложение.
+%% @doc Завершение сьюта: litter cleanup, затем stop app в local.
 end_per_suite(Config) ->
+  %% Soft-delete tracked @test.local users/calendars (remote and local).
+  %% Skip with CT_KEEP_DATA=1. Must run before application:stop.
+  catch api_test_runner:cleanup_tracked(),
   case proplists:get_value(started_by_us, Config, false) andalso
     os:getenv("CT_MODE", "local") =/= "remote" of
     true ->