MPV/VLC launch and playlist auto-update from the Electron preload
and migrate Tauri invoke calls to use the exposed window.electron API.
- Add openInMpv, openInVlc and autoUpdatePlaylists to the preload API,
forwarding parameters to ipcRenderer for native handling.
- Replace tauri invoke('open_in_mpv') and invoke('open_in_vlc') calls
with window.electron.openInMpv / openInVlc in tauri.service to use the
unified Electron IPC surface.
- Replace file-based AUTO_UPDATE_PLAYLISTS handling with a call to
window.electron.autoUpdatePlaylists and remove legacy file parsing
code (now commented) so the main process owns playlist refresh logic.
- Import shared AUTO_UPDATE_PLAYLISTS/Playlist types into preload.
This centralizes native player launching and playlist updates through the
preload IPC bridge, simplifying web service code and moving file I/O to
the native/main layer for better security and separation of concerns.
4gray