The last missing Settings surface: the OFFLINE CACHE group (Open manager /
Open folder / Clear all) and the manager view behind it — stats bar with
the GB limit, sort and failed-only toolbar, A-Z artist rail, album+track
rows with per-row re-download and remove. The engine was already here; what
was missing were four actions (remove_album, redownload_track, open_folder,
clear_all), the rollup and the view.
Two bugs the owner's smoke exposed, both older than this view:
ALBUM IDENTITY WAS BEING LOST ON EVERY ALBUM DOWNLOAD. A Track inside an
/album/get payload carries no nested album object, and `track_cache_info`
read exactly that, so `cache_album` wrote `album = NULL, album_id = NULL`
for every track it queued. Measured on a real index: 34 of 46 rows, three
complete albums. Not cosmetic — `album_id` is the key `remove_album`,
`redownload_album` and the downloaded-album registry look rows up by, so
those albums could not be removed, refreshed or recognised as downloaded.
The album document now stamps id and title onto every track that lacks its
own. The reference has the identical bug.
AND THE ROLLUP MIXED ARTISTS. Every row without an album_id collapsed into
one "__singles__" bucket titled from the first track and credited to its
artist, so three albums by three artists rendered as ONE album header while
two of the artists vanished from the rail. The key is a ladder now: album
id, else (artist, title), else a per-ARTIST singles bucket — two artists
can no longer meet in one group even with the broken data. Rows already on
disk recover their title from library.db, which does know it, so an
existing cache reads correctly without re-downloading.
Deltas from the reference, both because Qt is not Slint: covers are paths
(slint::Image is not Send, which is why it pre-decodes; Qt has no such
constraint) and selection is QML-local, this port's convention, which keeps
the document a pure function of the DB so a finishing download cannot fight
the user's checkboxes.
Clear-all confirms first — the reference fires straight from the glyph, and
undoing this one means re-downloading the whole cache.
cc
vicrodh
41c1b50d61