- Delete dead top-level downloads.rename.* i18n block (en/hu/de); the
metadata modal moved to downloads.edit.*. Keep downloads.actions.rename
(still used by ProfileEditor).
- Rename misnamed state renameJob/setRenameJob -> metaJob/setMetaJob in
DownloadCenter (it opens MetaEditModal, not a rename dialog).
- Extract the duplicated [downloads]/[download-index]/[download-usage]
invalidation trio into lib/downloads.ts invalidateDownloads(qc);
used by DownloadCenter and DownloadDialog.
Behavior-neutral. tsc green, knip shows no new unused export, JSON valid.
