chore(release): v1.42.1

Critical Windows bug-fix release.

Fixed
- Mini player no longer hangs the app on Windows (see 71fbc717): the
  second WebView2 is now pre-built in .setup() so the first open is a
  pure show/hide instead of a creation + minimize race. Windows is
  back on native window decorations for the mini and skips the main-
  window minimize/unminimize dance around show/hide.
- Mini player re-emits mini:ready on window focus so the snapshot from
  main arrives reliably on first open even when pre-create finished
  before main's bridge attached its listener.

Added
- "Preload mini player" toggle in Settings → General for Linux + macOS
  so those platforms can opt into the instant-open behaviour that
  Windows already has as a hang workaround.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

src-tauri/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "psysonic"
-version = "1.42.0"
+version = "1.42.1"
 description = "Psysonic Desktop Music Player"
 authors = []
 license = ""