История коммитов

- run cleanup from system/cron.php only at minute 00

- add CleanupOrphanForumFilesUseCase for deleting stale unlinked forum_files

- move orphan file selection query to ForumMessageFileRepository

- keep cleanup flow in use case with logging and FileStorage deletion

- add /forum/upload_file endpoint with ban checks and safe error handling

- store forum ckeditor file relations in forum_message_files via repository/use case

- attach uploaded files from attached_files[] on new/reply/edit post flows

- delete orphaned linked files on hard delete of posts/topics

- enable forum ckeditor upload_url in forum forms and shared ckeditor template

- include forum_message_files table creation in install/update_970_980.php