Room workers use sealed, versioned selection catalogues. The larger Standard research working database is separate; background collection does not directly edit a room's catalogue.

The operator-approved Standard refresher processes records older than 30 days in oldest-first order, at five HTTP starts per minute including authentication and retries. It refreshes profiles, complete top-score snapshots and map metadata in the isolated research database. The older expansion collector remains disabled. This is background maintenance, not a player command or a promise that all records become fresh together.

Replacing a live catalogue requires analysis, freezing the Standard/DT pair, checking calculator/source identity, exclusions and room eligibility, then a validated deployment. Room workers stay pinned to their own catalogue until updated; research progress alone does not change available maps.

From v6.7.30, a DT catalogue older than 30 days is due for refresh, not automatically disabled solely because of that age. Invalid calculation dates, mismatched source identity/calculator and uncertain per-chart checksums or revisions still reject unsafe DT variants. A changed chart must not retain an outdated DT rating merely because the catalogue stays available.

This rule is distinct from configured map-age filters, ranked-date filters and the research freshness threshold. It does not broaden stars, playable duration or source/style eligibility. NoMod fallback remains available.

The operator exclusion list still blocks listed exact charts even if a rebuilt catalogue accidentally contains them. Export-time exclusion removal/validation is a separate obligation; the legacy research export is not yet automatically wired to this runtime list. Removing a runtime exclusion cannot restore a row absent from the live catalogue.

Mixed DT · Map selection · Catalogue deployment · Release history