[ai] fixed web server issues, still some quirky behaviour. More robust.

web/index.html

@@ -75,9 +75,7 @@
           <h2>Playlist</h2>
           <button class="action-btn small" onclick="location.reload()">Refresh</button>
         </div>
-        <div class="playlist-container">
-          %DIRECTORY%
-        </div>
+        <div class="playlist-container" id="playlistContainer"></div>
 
         <div class="manager-toggle">
           <button id="toggleFileManagerButton" class="action-btn" onclick="toggleFileManager()">Toggle Manager</button>
@@ -106,7 +104,7 @@
 
           <h4>Edit RFID Mapping</h4>
           <p class="hint">Hint: Use a folder or filename, not the absolute file path!</p>
-          <div class="mapping-list">%MAPPING%</div>
+          <div class="mapping-list" id="mappingList"></div>
 
           <form id="editMappingForm" class="form form-grid">
             <div>