fix(mnesia): per-slot volumes hint and harden verification lookup.

Avoid shared Mnesia dir across replicas; make get_or_create_token and CT verify_user resilient to brief cross-node lag.

Co-authored-by: Cursor <cursoragent@cursor.com>

test/api/api_test_runner.erl

@@ -402,13 +402,25 @@ create_event(Token, CalId, Params) ->
 
 %% @doc Подтверждает email пользователя, используя админский эндпоинт
 %% для получения верификационного токена и публичный /v1/verify.
+%% Retries briefly: IFT Traefik may hit another replica before Mnesia settles.
 -spec verify_user(AdminToken :: binary(), UserId :: binary()) -> ok.
 verify_user(AdminToken, UserId) ->
-  #{<<"token">> := Token} = admin_get(
-    <<"/v1/admin/users/", UserId/binary, "/verification-token">>, AdminToken),
-  {ok, 200, _, _} = client_request(post, <<"/v1/verify">>, <<>>,
-    jsx:encode(#{<<"token">> => Token})),
-  ok.
+  verify_user(AdminToken, UserId, 8).
+
+verify_user(AdminToken, UserId, RetriesLeft) ->
+  Path = <<"/v1/admin/users/", UserId/binary, "/verification-token">>,
+  case admin_request(get, Path, AdminToken) of
+    {ok, 200, _, Body} ->
+      #{<<"token">> := Token} = jsx:decode(list_to_binary(Body), [return_maps]),
+      {ok, 200, _, _} = client_request(post, <<"/v1/verify">>, <<>>,
+        jsx:encode(#{<<"token">> => Token})),
+      ok;
+    {ok, 404, _, _} when RetriesLeft > 1 ->
+      timer:sleep(100),
+      verify_user(AdminToken, UserId, RetriesLeft - 1);
+    Other ->
+      error({verify_user_failed, UserId, Other})
+  end.
 
 %%%===================================================================
 %%% Внутренние функции