feat: UI polish, DnD fix, navigation, and installer improvements (v1.0.10)

- Fix queue DnD on macOS/Windows: delay ref cleanup in onDragEnd so onDropQueue
  reads correct source/destination before dragend clears them
- Active track highlighting in album tracklist (pulsing accent bg + play icon)
- Marquee scrolling for long titles in Fullscreen Player
- Clickable artist/album in Player Bar and Queue now-playing strip
- Tracklist: format column moved after duration, auto width, kHz/filesize removed
- Settings dropdowns: visible border (base bg + overlay0 border)
- Sidebar: fixed responsive width via clamp(), removed drag-to-resize
- Favorites icon: HandMetal → Star in Random Mix page
- Linux app menu category set to Multimedia (AudioVideo)
- Windows MSI: stable upgradeCode for in-place upgrades
- Bundle: category/description fields at correct config level
- About: Claude Code credit, fixed German MIT licence wording

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/styles/components.css

@@ -567,7 +567,7 @@
 .tracklist { padding: 0 var(--space-6) var(--space-6); }
 .tracklist-header {
   display: grid;
-  grid-template-columns: 36px minmax(100px, 3fr) minmax(90px, 1.5fr) 70px 80px 60px;
+  grid-template-columns: 36px minmax(100px, 3fr) 70px 80px 60px auto;
   gap: var(--space-3);
   padding: var(--space-2) var(--space-3);
   font-size: 11px;
@@ -579,12 +579,12 @@
   margin-bottom: var(--space-2);
 }
 .tracklist-header.tracklist-va {
-  grid-template-columns: 36px minmax(100px, 2fr) minmax(80px, 1.2fr) minmax(90px, 1.5fr) 70px 80px 60px;
+  grid-template-columns: 36px minmax(100px, 2fr) minmax(80px, 1.2fr) 70px 80px 60px auto;
 }
 
 .track-row {
   display: grid;
-  grid-template-columns: 36px minmax(100px, 3fr) minmax(90px, 1.5fr) 70px 80px 60px;
+  grid-template-columns: 36px minmax(100px, 3fr) 70px 80px 60px auto;
   gap: var(--space-3);
   align-items: start;
   padding: var(--space-2) var(--space-3);
@@ -593,37 +593,46 @@
   transition: background var(--transition-fast);
 }
 .track-row.track-row-va {
-  grid-template-columns: 36px minmax(100px, 2fr) minmax(80px, 1.2fr) minmax(90px, 1.5fr) 70px 80px 60px;
+  grid-template-columns: 36px minmax(100px, 2fr) minmax(80px, 1.2fr) 70px 80px 60px auto;
 }
 
 .tracklist-total {
   display: grid;
-  grid-template-columns: 36px minmax(100px, 3fr) minmax(90px, 1.5fr) 70px 80px 60px;
+  grid-template-columns: 36px minmax(100px, 3fr) 70px 80px 60px auto;
+  gap: var(--space-3);
   border-top: 1px solid var(--border-subtle);
-  padding: var(--space-3) var(--space-4);
+  padding: var(--space-2) var(--space-3);
   margin-top: var(--space-1);
 }
 .tracklist-total.tracklist-va {
-  grid-template-columns: 36px minmax(100px, 2fr) minmax(80px, 1.2fr) minmax(90px, 1.5fr) 70px 80px 60px;
+  grid-template-columns: 36px minmax(100px, 2fr) minmax(80px, 1.2fr) 70px 80px 60px auto;
 }
 .tracklist-total-label {
-  grid-column: 1 / -2;
+  grid-column: 1 / 5;
   text-align: right;
   font-size: 12px;
   font-weight: 600;
   color: var(--text-muted);
   text-transform: uppercase;
   letter-spacing: 0.06em;
-  padding-right: var(--space-3);
 }
 .tracklist-total-value {
+  grid-column: 5 / 6;
   text-align: right;
   font-size: 13px;
   font-weight: 600;
   color: var(--text-secondary);
   font-variant-numeric: tabular-nums;
 }
+.tracklist-total.tracklist-va .tracklist-total-label { grid-column: 1 / 6; }
+.tracklist-total.tracklist-va .tracklist-total-value { grid-column: 6 / 7; }
 .track-row:hover { background: var(--bg-hover); }
+.track-row.active { background: var(--accent-dim); animation: track-pulse 2.5s ease-in-out infinite; }
+.track-row.active:hover { background: var(--accent-dim); animation: none; }
+@keyframes track-pulse {
+  0%, 100% { background: var(--accent-dim); }
+  50% { background: transparent; }
+}
 .track-row > * { padding-top: 6px; padding-bottom: 6px; }
 
 /* CD / Disc separator */
@@ -1070,7 +1079,7 @@
   text-align: center;
   width: 100%;
 }
-.fs-title {
+.fs-title-wrap {
   font-family: var(--font-display);
   font-size: clamp(20px, 3vw, 32px);
   font-weight: 800;
@@ -1079,7 +1088,14 @@
   line-height: 1.15;
   white-space: nowrap;
   overflow: hidden;
-  text-overflow: ellipsis;
+}
+.fs-title-marquee {
+  display: inline-block;
+  animation: marquee-scroll 14s linear infinite alternate;
+}
+@keyframes marquee-scroll {
+  0%, 15%  { transform: translateX(0); }
+  85%, 100% { transform: translateX(var(--scroll-amount, 0px)); }
 }
 .fs-album {
   font-size: 14px;