backend/web/db/search.db (4 tables: searches/results/pages/media), search-api.php (log_search/check_cache/get_searches/get_results/log_page/log_media/stats), backend/web/media/ with decade-code subdirs (pages/images/downloads/cache). /sessions/ root removed. backend/media/ removed, consolidated into backend/web/media/.

backend/web/ — new web infrastructure directory — search.db + search-api.php + media/[00-95]/ per-system subdirs