* refactor(virtual): extract scrollMargin measurement into a reusable hook
VirtualCardGrid carried its own useLayoutEffect + ResizeObserver block for
the scroll-margin computation introduced in #764. The same pattern is
needed on every other useVirtualizer site whose wrapper sits below other
content; pull it out as useVirtualizerScrollMargin so each call-site is a
single hook invocation instead of a 20-line duplicate.
No behavior change for VirtualCardGrid — same scroll element, same deps,
same observed nodes.
* fix(virtual): apply scrollMargin to the remaining useVirtualizer call-sites
#764 fixed the symptom for VirtualCardGrid (Albums / Artists grid via the
shared component, Composers grid, "More by …" rail, etc.) but four more
useVirtualizer call-sites have the same shape — wrapper sits below a
sticky page header and TanStack would otherwise place rows starting at
the scroll-element top, unmounting rows that are still in the viewport
and at higher offsets refusing to render at all:
- Artists grid view (Artists.tsx + ArtistsGridView.tsx) — under the
sticky title + filter row + alphabet bar (~150–250 px depending on
alphabet wrap).
- Artists list view (Artists.tsx + ArtistsListView.tsx) — same header
stack; flat letter/row stream means a noticeable jump on long
libraries.
- Composers list view (Composers.tsx) — identical header stack to
Artists.
- VirtualSongList — ~36 px sticky song-list header inside its own
scroll container; the offset was small enough to be absorbed by
overscan, but the pattern was the same so wire it up for consistency.
Each call-site now feeds wrapRef + scroll-element lookup into
useVirtualizerScrollMargin and forwards the value into useVirtualizer +
the translateY of each rendered row.
* docs(changelog): note PR #766 under Fixed in v1.46.0
111 of 122 top-level src/utils/ files move into 16 topic folders (audio,
cache, cover, share, server, playback, playlist, deviceSync, waveform,
mix, format, export, changelog, ui, perf, componentHelpers). True
singletons with no cluster stay at the utils/ root.
Pure file-move: a path-aware codemod rewrote 539 relative-import
specifiers across 275 files; no logic touched. The hot-path coverage
gate list (.github/frontend-hot-path-files.txt) is updated to the new
paths for the 11 gated utils files — a mechanical consequence of the
move, not a CI change. tsc is green.
* refactor(artists): extract helpers + constants
Pull ALL_SENTINEL / ALPHABET / ARTIST_LIST_* row-height estimates,
the ArtistListFlatRow union, CTP_COLORS palette, and the deterministic
nameColor / nameInitial helpers into utils/artistsHelpers.ts.
Artists.tsx: 520 → 496 LOC.
* refactor(artists): extract ArtistAvatars subcomponents
Pull ArtistCardAvatar (300px, grid view) and ArtistRowAvatar (64px, list
view) into components/artists/ArtistAvatars.tsx. Both fall back to a
hashed-Catppuccin monogram when artist images are off or no cover art
is available.
Artists.tsx: 496 → 436 LOC.
* refactor(artists): extract useArtistsFiltering hook
Bundle the letter/text/star filter pipeline, visible-slice memo,
group-by-letter, and the virtualizer flat-rows list into
hooks/useArtistsFiltering.ts. List-view-only outputs short-circuit when
grid view is active.
Artists.tsx: 436 → 386 LOC.
* refactor(artists): extract useArtistsInfiniteScroll hook
Bundle visibleCount + loadingMore state, the sentinel
IntersectionObserver, loadMore callback, and the filter-change reset
into hooks/useArtistsInfiniteScroll.ts. The observer no longer takes
hasMore — the sentinel element only mounts while there is more data,
so the observer attaches/detaches naturally with it.
Artists.tsx: 386 → 370 LOC.
* refactor(artists): extract ArtistsGridView + ArtistsListView
Move the grid card layout to components/artists/ArtistsGridView.tsx and
the dual-path list layout (non-virtualized fallback + virtualized stream)
to components/artists/ArtistsListView.tsx. Both paths now share an
internal ArtistListRow component so click + context-menu behaviour is
identical regardless of which renderer is active.
Artists.tsx: 370 → 233 LOC.
Frank Stellmacher