fixing small issues in the project

components/configuration/ClockTab.tsx

@@ -40,7 +40,6 @@ const ClockTab: React.FC<ClockTabProps> = ({ config, onChange }) => {
           onChange={(e) => updateClock({ font: e.target.value as string })}
           options={[
             { value: 'Helvetica', label: 'Helvetica' },
-            { value: `'Orbitron', sans-serif`, label: 'Orbitron' },
             { value: 'monospace', label: 'Monospace' },
             { value: 'cursive', label: 'Cursive' },
           ]}

components/configuration/ServerWidgetTab.tsx

@@ -5,6 +5,7 @@ import { Config, Server } from '../../types';
 import RangeSlider from './RangeSlider';
 import { TrashIcon } from '../icons';
 import { createId } from '../utils/idUtils';
+import { parseServerAddress } from '../utils/urlUtils';
 
 interface ServerWidgetTabProps {
   config: Config;
@@ -21,6 +22,12 @@ const ServerWidgetTab: React.FC<ServerWidgetTabProps> = ({ config, onChange }) =
 
   const handleAddServer = () => {
     if (newServerName.trim() === '' || newServerAddress.trim() === '') return;
+    try {
+      parseServerAddress(newServerAddress);
+    } catch (error) {
+      alert(error instanceof Error && error.message.startsWith('Server') ? error.message : 'Please enter a valid server address, e.g. 192.168.1.10:8080 or https://example.com.');
+      return;
+    }
     const newServer: Server = {
       id: createId(),
       name: newServerName.trim(),

components/configuration/ThemeTab.tsx

@@ -121,7 +121,10 @@ const ThemeTab: React.FC<ThemeTabProps> = ({
             >
               <span className="truncate">{wallpaper.name}</span>
               <button
-                onClick={() => onDeleteWallpaper(wallpaper)}
+                onClick={() => {
+                  if (!wallpaper.url && !confirm(`Delete "${wallpaper.name}"? Uploaded wallpapers are not included in exports and cannot be recovered.`)) return;
+                  void onDeleteWallpaper(wallpaper);
+                }}
                 className="liquid-edit-action liquid-focus text-red-300 hover:text-red-100"
                 aria-label={`Delete ${wallpaper.name}`}
               >