Stemify iOS 1.1 and WebUI updates, repo restructure into desktop/ios/server/web

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

web/index.html

@@ -14,12 +14,14 @@
   <aside id="nav">
     <div class="brand">stemify</div>
     <form id="search"><input type="search" name="q" placeholder="Search" autocomplete="off"></form>
+    <a href="#/home" data-nav="home">Home</a>
     <a href="#/albums" data-nav="albums">Albums</a>
     <a href="#/artists" data-nav="artists">Artists</a>
     <a href="#/songs" data-nav="songs">Songs</a>
     <a href="#/genres" data-nav="genres">Genres</a>
     <a href="#/playlists" data-nav="playlists">Playlists</a>
     <a href="#/downloads" data-nav="downloads">Downloads</a>
+    <a href="#/radio" data-nav="radio">Web Radio</a>
     <div id="live" hidden></div>
     <a href="#/settings" data-nav="settings" class="settings-link">Settings</a>
   </aside>
@@ -36,7 +38,7 @@
       <button id="b-shuffle" class="side" title="Shuffle (S)"></button>
       <button id="b-prev" title="Previous"></button>
       <button id="b-play" class="play" title="Play (Space)"></button>
-      <button id="b-next" title="Next"></button>
+      <button id="b-next" title="Next (hold to skip the album)"></button>
       <button id="b-repeat" class="side" title="Repeat (R)"></button>
     </div>
     <div class="seek">