Fix missing window globals after Vite migration

switchNavMode, stopPreview, npToggleStar, loadRandom were imported
but not exposed to window — causing onclick ReferenceErrors in HTML.
Added npSeek stub (was empty function in original app.js).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/main.js

@@ -8,11 +8,13 @@ import {
   initProgressScrub, updateProgress, updatePreviewProgress, stopPreview,
   toggleRadioMode, starCurrent, downloadCurrent, renderQueue, playPreview,
   toggleStar, dlSongLocal, _applyRadioBtn, _restoreLastPlayed, setPlayIcon,
+  npToggleStar,
 } from './player.js';
 import {
   navigate, _navGoBack, _navLoad, loadHomeData, onLocalSearch, onMobileSearch,
   onGlobalSearch, s_goArtist, s_goAlbum, playerBarGoArtist, playerBarGoAlbum,
   searchSimilarArtist, searchAndPreview, loadItunesAlbum, expandArtistBio,
+  loadRandom,
 } from './views.js';
 import {
   openNowPlaying, closeNowPlaying, switchNpTab, npGoArtist, npGoAlbum,
@@ -146,13 +148,16 @@ Object.assign(window, {
   // Player
   playQueue, togglePlay, prevSong, nextSong, toggleShuffle, toggleRepeat,
   toggleQueue, setVolume, seekTo, starCurrent, downloadCurrent, playPreview,
-  toggleStar, dlSongLocal, toggleRadioMode,
+  toggleStar, dlSongLocal, toggleRadioMode, stopPreview, npToggleStar,
   // Now Playing
   openNowPlaying, closeNowPlaying, switchNpTab, npGoArtist, npGoAlbum,
   openNpMenu, closeNpMenu,
+  npSeek: () => {},
   // UI / Modals
   openSettings, closeSettings, saveSettings, checkBackend,
-  openSidebar, closeSidebar, showCtxMenu,
+  openSidebar, closeSidebar, switchNavMode, showCtxMenu,
+  // Views
+  loadRandom,
   openPlModal, closePlModal, addSongsToPlaylist, createAndAddPlaylist, createPlaylistPrompt,
   showSongInfo, closeInfoModal,
   openDlModal, closeDlModal, selectDlType, executeDownload,