Deezy v0.2.19

Fixed

• Concurrent download file collisions – Downloads now reserve temporary and final filenames atomically, preventing simultaneous tracks with the same destination name from overwriting or interfering with each other.
• Cross-filesystem finalization – Added a no-clobber copy fallback for filesystems that do not support hard links, including cleanup of incomplete destination files when finalization fails.
• Download activity tracking – Kept the queue manager authoritative for active download counts so progress events cannot introduce incorrect or negative counts.
• Cancellation cleanup – Download cancellation registrations are now removed on every completion path, and duplicate active track IDs are rejected safely.
• Shutdown history persistence – Pending debounced download-history updates are flushed before the application exits, including tray-initiated exits.
• Number input CSS warning – Added the standard appearance property alongside -moz-appearance in the tag editor.

Changed

• Async runtime responsiveness – Moved blocking file writing, metadata tagging, settings, history, theme, and credential-store operations away from Tokio worker threads where appropriate.
• Frontend IPC typing – Replaced remaining untyped settings and tray payloads with shared TypeScript interfaces, including settings updates, folder structures, and tray state.
• Focused module structure – Split the large command handler, Deezer client, and search view files into smaller modules organized by responsibility without changing their public behavior.