QianKong - Stage Control

This update introduces a redesigned hosting interface and improved music control experience: • Redesigned hosting interface with clearer sections for event info, script, and playlist music • New independent playlist management. Playlists and event segments are maintained separately and do not interfere with each other • Host scripts can now be resized directly with a two-finger gesture for easier live reading • The hosting layout can be adjusted by dragging, allowing flexible space allocation between the script and music panels • Event info, script, and music panels can each be shown or hidden independently for different hosting scenarios • Upgraded music controls with customizable button order and selectable primary button • Improved playlist switching, track navigation, and loop playback behavior • Refined music data handling for better reliability after importing, deleting, and editing playlist tracks • Fixed known issues and improved overall stability