Multi-File Upload, Dateinamen in History, kein Auto-Scroll bei Attachment-Klick

wwwroot/index.html

@@ -124,7 +124,7 @@
     <div id="chat"></div>
     <div id="filePreview" class="file-preview" hidden></div>
     <div class="input-area">
-      <input type="file" id="fileInput" accept="image/jpeg,image/png,image/gif,image/webp,application/pdf" hidden>
+      <input type="file" id="fileInput" accept="image/jpeg,image/png,image/gif,image/webp,application/pdf" multiple hidden>
       <button id="fileBtn" class="file-btn" title="Datei anhängen">📎</button>
       <textarea id="input" placeholder="Nachricht eingeben... (Ctrl+Enter)" rows="2"></textarea>
       <button id="send">Senden</button>