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/theme.css

@@ -580,8 +580,8 @@ body.is-dragging * {
 .input {
   width: 100%;
   padding: var(--space-3) var(--space-4);
-  background: var(--ctp-surface0);
-  border: 1px solid var(--border);
+  background: var(--ctp-base);
+  border: 1px solid var(--ctp-overlay0);
   border-radius: var(--radius-md);
   color: var(--text-primary);
   font-family: var(--font-sans);