Добавить автомодерацию: политики, порог жалоб, settings/hits API и тесты.

Refs EventHub/EventHubBack#37
Refs EventHub/EventHubBack#38
Refs EventHub/EventHubBack#39
Refs EventHub/EventHubBack#40

src/migrations/20260717150000_automod_tables.erl

@@ -0,0 +1,29 @@
+%% @doc Create automod_settings and automod_hit tables if missing.
+-module('20260717150000_automod_tables').
+
+-export([up/0, down/0]).
+
+-include("records.hrl").
+
+up() ->
+  ensure_table(automod_settings, record_info(fields, automod_settings)),
+  ensure_table(automod_hit, record_info(fields, automod_hit)),
+  core_automod_settings:ensure_defaults(),
+  ok.
+
+down() ->
+  _ = mnesia:delete_table(automod_hit),
+  _ = mnesia:delete_table(automod_settings),
+  ok.
+
+ensure_table(Table, Attrs) ->
+  case lists:member(Table, mnesia:system_info(tables)) of
+    true ->
+      ok;
+    false ->
+      case mnesia:create_table(Table, [{disc_copies, [node()]}, {attributes, Attrs}]) of
+        {atomic, ok} -> ok;
+        {aborted, {already_exists, Table}} -> ok;
+        {aborted, Reason} -> error({create_table_failed, Table, Reason})
+      end
+  end.