`library-status-indicator` was a <button> whose click handler was a
stopPropagation() and a comment saying to wire up the download client
later. On an Explore results page that is 20 of 66 tab stops (measured
in the running app, before and after: 66/20 → 46/0) that announce
themselves as buttons and do nothing.
It is role="img" with its existing label now, and the label for an
unowned entity says "… is not in your library" rather than "Add … to
library" — the old copy was the button's promise written out. The day
there is a download client to call, the right change is a <button>
*with* a handler, not a handler bolted onto something already shaped
like one.
box-sizing: border-box is explicit because a <button> gets it from the
UA stylesheet and a <span> does not, so the badge grew 36px → 38px.
Caught by the stored screenshot.
H-13: no Play, no Shuffle, no Add to queue on the album header. The
reason it is not just three buttons is that explore-album-details is a
catalog page — there is no library-side album detail page at all — so
the album shown may be wholly the user's, partly theirs, or not theirs.
A Play button that plays 7 of a 40-track release under a label saying
'Play' is the page lying about what is owned, so the button says which:
'Play' when all of it is owned, 'Play 7 of 12' when some is, and no
play button at all when none is.
albumLibraryStatus() stays as it was — four claims of decreasing
confidence OR'd into one tick, the weakest firing when a single
recording matches. That is a fine answer to 'is any of this mine' and a
useless basis for a button, so ownership() counts the displayed
tracklist instead.
GetFilePathsByRecordingMBIDs is the catalog-side sibling of
GetFilePathsByAlbums: one query, paths only, grouped so the caller
keeps the tracklist's order. It is keyed on recording MBID because that
is how the backend decides a track is inLibrary, and because
MBTrack.LocalID is declared and never written by anything. The local
album id is preferred where there is one — a library-only album has no
MBIDs at all, and keying on them alone queued nothing.
The ticks also get the legend H-13 asks for. They were never unlabelled
— the indicator has carried a title and aria-label all along — but a
sighted user got a column of green circles and no key.
logan