feat(search): scoped live search on browse pages (#938)

* feat(artists): scoped live search badge replaces page filter

Move Artists browse text search into the header Live Search with a page
scope badge (Users icon), field-local undo, and double-click/backspace
to clear scope. Block the live-search dropdown while scoped so results
only filter the Artists grid; mobile overlay follows the same rules.

* fix(artists): plain grid for scoped search fixes broken card layout

Route the browse grid through VirtualCardGrid, switch to non-virtual CSS
grid when live search filters the catalog, reset scroll on filter changes,
and skip content-visibility on plain tiles to avoid blank/black cards.

* fix(search): scope badge double-Backspace and single clear control

Require two Backspaces on an empty scoped field after prior text input;
one Backspace still clears the badge when the field was never filled.
Move live-search clear/advanced controls inside the field pill, drop the
extra outer clear button, and use type=text to avoid native search clears.

* fix(search): drop duplicate outer live-search clear button

Keep the native in-field clear on type=search and the original pill layout;
remove only the extra × control outside the search border. Reset dropdown
state when the query is cleared via the native control.

* refactor(search): generic scoped browse query helper, drop dead code

Rename artistsBrowseSearchQuery to scopedBrowseSearchQuery with an
expectedScope argument; wire Artists via useScopedBrowseSearchQuery.
Remove unused liveSearchScoped dropdown helper (scoped mode blocks it).

* feat(search): ghost scope badge and single-click badge remove

After clearing the artists scope on /artists, show a faded ghost chip to
restore page-only search while keeping the global search placeholder.
Active badge removes on one click; tooltips and styles updated.

* feat(search): scoped live search for All Albums and New Releases

Wire albums and newReleases scope badges with debounced album title search
(local index title-only FTS + filtered search3). Plain grid, scroll reset,
and session query restore on album grid browse pages.

* fix(browse): preserve scroll restore after album/artist detail back

Only reset in-page scroll when filter resetKey changes, not when
isScrollRestorePending clears after session restore.

* feat(search): scoped live search for Tracks browse

Wire /tracks to header live search with wide title/artist/album FTS,
hide hero and discovery rails while search is active, and remove the
inline search field from the browse list.

* fix(search): clear header query when leaving scoped browse pages

Prevent global live search from firing on album/detail routes after a
scoped browse query; browse session stashes still restore on back.

* fix(tracks): restore scroll after back from detail during scoped search

Hold stashed song results across fetchSongPage churn, defer leave-stash
teardown past AppShell scroll reset, restore tracks scroll after the list
is ready, and save scroll snapshot when opening artist from song context menu.

* fix(tracks): hide discovery headings during scoped search

Hide the page subtitle and "Browse all tracks" section title when
tracks search is active, matching hero/rails chrome behavior.

* feat(search): scoped live search for Composers browse

Wire /composers to header live search with composers scope badge,
session stash, scroll restore, and plain grid/list during text filter.
Remove the in-page filter input; add i18n and navigation helpers.

* docs: CHANGELOG and credits for scoped browse live search (PR #938)

src/styles/components/live-search.css

@@ -22,18 +22,26 @@
   cursor: text;
 }
 
-.live-search[data-collapsed]:not([data-active]) .live-search-icon {
-  left: 50%;
-  transform: translateX(-50%);
+.live-search[data-collapsed]:not([data-active]) .live-search-field-cluster {
+  width: 34px;
+  height: 34px;
+  flex: 0 0 34px;
+  justify-content: center;
+  padding: 0;
+  border: none !important;
+  background: transparent !important;
+  box-shadow: none !important;
+  opacity: 1;
+  pointer-events: auto;
 }
 
-.live-search[data-collapsed]:not([data-active]) .live-search-field {
-  width: 0 !important;
-  min-width: 0 !important;
-  padding: 0 !important;
-  border: none !important;
-  opacity: 0;
-  pointer-events: none;
+.live-search[data-collapsed]:not([data-active]) .live-search-field,
+.live-search[data-collapsed]:not([data-active]) .live-search-scope-badge {
+  display: none;
+}
+
+.live-search[data-collapsed]:not([data-active]) .live-search-leading-icon {
+  margin: 0;
 }
 
 .live-search[data-collapsed][data-active] {
@@ -51,13 +59,18 @@
   z-index: 25;
 }
 
+.live-search[data-collapsed][data-active] .live-search-field-cluster {
+  width: 100%;
+  opacity: 1;
+  pointer-events: auto;
+}
+
 .live-search[data-collapsed][data-active] .live-search-field {
   width: 100%;
   opacity: 1;
   pointer-events: auto;
 }
 
-.live-search[data-collapsed]:not([data-active]) .live-search-clear,
 .live-search[data-collapsed]:not([data-active]) .live-search-adv-btn {
   opacity: 0;
   pointer-events: none;
@@ -75,32 +88,75 @@
   align-items: center;
 }
 
-.live-search-icon {
-  position: absolute;
-  left: 12px;
-  color: var(--text-muted);
-  pointer-events: none;
+.live-search-field-cluster {
   display: flex;
   align-items: center;
+  flex: 1;
+  min-width: 0;
+  background: var(--ctp-base);
+  border: 1px solid var(--ctp-overlay0);
+  border-radius: var(--radius-full);
+  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
+}
+
+.live-search-field-cluster:focus-within {
+  border-color: var(--accent);
+  box-shadow: 0 0 0 3px var(--accent-dim);
+}
+
+.live-search-leading-icon {
+  flex-shrink: 0;
+  display: flex;
+  align-items: center;
+  margin-left: 12px;
+  color: var(--text-muted);
+  pointer-events: none;
+}
+
+.live-search-scope-badge {
+  flex-shrink: 0;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  width: 22px;
+  height: 22px;
+  margin-left: 6px;
+  border-radius: var(--radius-sm);
+  color: var(--accent);
+  background: color-mix(in srgb, var(--accent) 14%, transparent);
+  border: 1px solid color-mix(in srgb, var(--accent) 28%, transparent);
+  cursor: pointer;
+  user-select: none;
+}
+
+.live-search-scope-badge--ghost {
+  opacity: 0.42;
+  border-style: dashed;
+  cursor: pointer;
+  transition: opacity var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
+}
+
+.live-search-scope-badge--ghost:hover {
+  opacity: 0.9;
+  background: color-mix(in srgb, var(--accent) 12%, transparent);
+  border-color: color-mix(in srgb, var(--accent) 40%, transparent);
 }
 
 .live-search-field {
-  padding-left: 36px !important;
+  padding: var(--space-3) var(--space-4) !important;
+  padding-left: 8px !important;
   padding-right: 58px !important;
+  border: none !important;
+  background: transparent !important;
+  box-shadow: none !important;
   border-radius: var(--radius-full) !important;
+  flex: 1;
+  min-width: 0;
 }
 
-.live-search-clear {
-  position: absolute;
-  right: 8px;
-  font-size: 18px;
-  color: var(--text-muted);
-  line-height: 1;
-  transition: color var(--transition-fast);
-}
-
-.live-search-clear:hover {
-  color: var(--text-primary);
+.live-search-field:focus {
+  border-color: transparent !important;
+  box-shadow: none !important;
 }
 
 .live-search-adv-btn {
@@ -249,4 +305,3 @@
   color: var(--text-muted);
   font-size: 13px;
 }
-