fix(artist-info): id-gate fetchers, share ArtistCard, square hero (#739)

* fix(artist-info): id-gate fetcher tuples, reuse ArtistCard on ArtistDetail

The cache-mismatch bug PR #732 fixed in `NowPlayingInfo.tsx` had the same
shape inside `ArtistCard` on the NowPlaying page: `useNowPlayingFetchers`
returned `artistInfo` for the previously-current artist for one render
after `artistId` changed, and `CachedImage` persisted that mismatched
blob under the new `artistInfo:<new-id>:hero` key in IndexedDB —
sticky "previous artist" image on every subsequent track.

Apply the same `{ id, value }` tuple pattern from PR #732 inside the
hooks themselves so every consumer is safe by construction:

- `useNowPlayingFetchers`: gate `artistInfo`, `songMeta`, `albumData`,
  `discography` on id-match at the return. Late-arriving resolves for
  a stale id can no longer overwrite the displayed value.
- `useArtistDetailData`: same for `info`. Required because the
  `ArtistDetail` bio card now uses `CachedImage` via the shared
  `ArtistCard` (previously raw `<img>`, no persistence hazard).

Unify `ArtistDetail`'s inline "About the Artist" block onto the same
shared `ArtistCard` so there is one source of truth for hero / bio /
similar rendering. New optional props: `onNavigate?` (omitted on
`/artist/:id` since the user is already there), `coverFallback`
(coverArt fallback when artistInfo has no hero image),
`hideArtistName` (avoid duplicating the hero name), `hideSimilar`
(ArtistDetail has its own similar-artists section).

Tests cover the gating contract for both hooks (incl. stale-resolve
race) and the `ArtistCard` prop matrix.

* fix(artist-image): square queue info hero, drop artist-avatar glow

- Queue Info bar's artist hero was rendered in a 16:10 wrap with
  `object-fit: cover`, so portrait photos lost top/bottom equally
  while landscape ones lost the sides — perceived as cropped even
  on roughly square sources. Set the wrap to 1:1 so the crop is
  symmetric and matches the typical square framing of artist
  photography.

- `ArtistDetail` extracted the cover's accent colour on every image
  load and rendered a 36px / 8px-spread `boxShadow` ring around the
  avatar. Drop the glow, the state, the one-shot reset effect, the
  prop-passing through `ArtistDetailHero`, and the now-orphaned
  `extractCoverColors` import on this page. `extractCoverColors`
  itself stays in place (still used by `useFsDynamicAccent`).

* docs(changelog): artist-info image fix extension + UI tweaks (PR #739)

CHANGELOG.md

@@ -603,6 +603,14 @@ Foundational work: faster reviews, narrower diffs, and a safety net under the pa
 * The **Artist Biography** modal lived under the album page tree, where an ancestor broke **`position: fixed`** on the overlay — opening a long bio scrolled the whole page instead of staying pinned to the viewport, and the modal itself stretched past the visible area. It now mounts via **`createPortal(..., document.body)`** (same approach as **`RadioEditModal`** / **`CoverLightbox`**), so the overlay always pins to the viewport.
 * A new **`.modal-content.bio-modal`** variant turns the modal into a flex column with **`overflow: hidden`** and an inner **`.bio-modal-body`** that handles the scrolling. The existing **`max-height: 80vh`** cap is now honored, and the title + close button stay pinned while the bio scrolls.
 
+### Artist info — image-mismatch fix extended; square Queue Info hero; ArtistDetail glow removed
+
+**By [@Psychotoxical](https://github.com/Psychotoxical), PR [#739](https://github.com/Psychotoxical/psysonic/pull/739)**
+
+* The cache-mismatch shape PR [#732](https://github.com/Psychotoxical/psysonic/pull/732) fixed inside the Queue Info panel was latent in the **About the Artist** card on the **NowPlaying** page and would have surfaced there the moment that card used **`CachedImage`**. Fixed at the source: **`useNowPlayingFetchers`** and **`useArtistDetailData`** hold id-keyed entities as **`{ id, value }`** tuples and gate them on id-match at the return — every consumer is safe by construction. ArtistDetail's inline bio block is now the shared **`ArtistCard`** so there is a single rendering path.
+* The artist hero in the **Queue Info** panel was rendered in a **16:10** wrap with **`object-fit: cover`**, so portrait photos always lost top and bottom equally — perceived as cropped even on roughly square sources. Now **1:1**, symmetric crop.
+* The **ArtistDetail** avatar extracted the cover's accent colour on every image load and painted a 36px **`boxShadow`** ring around the photo. The glow is gone (the state, the reset effect, and the per-page **`extractCoverColors`** import are dropped too; the utility itself stays in place for **`useFsDynamicAccent`**).
+
 ## [1.45.0] - 2026-05-04
 
 ## Added