增加插件，自定义座右铭

src/components/Clock.tsx

@@ -4,9 +4,10 @@ import { useTranslation } from '../i18n';
 interface ClockProps {
   showSeconds?: boolean;
   use24HourFormat?: boolean;
+  motto?: string;
 }
 
-const Clock: React.FC<ClockProps> = ({ showSeconds = true, use24HourFormat = true }) => {
+const Clock: React.FC<ClockProps> = ({ showSeconds = true, use24HourFormat = true, motto = '同是天涯沦落人，相逢何必曾相识' }) => {
   const [time, setTime] = useState(new Date());
   const { language } = useTranslation();
 
@@ -83,8 +84,8 @@ const Clock: React.FC<ClockProps> = ({ showSeconds = true, use24HourFormat = tru
       </div>
 
       {/* Motto */}
-      <div className="mt-4 text-lg md:text-xl font-light text-white/70 tracking-widest uppercase">
-        同是天涯沦落人，相逢何必曾相识
+      <div className="mt-4 text-lg md:text-xl font-light text-white/70 tracking-widest uppercase text-center max-w-2xl">
+        {motto}
       </div>
     </div>
   );

src/components/ThemeSettings.tsx

@@ -49,6 +49,10 @@ const ThemeSettings: React.FC<ThemeSettingsProps> = ({ settings, onUpdateSetting
     onUpdateSettings({ ...settings, language: lang });
   };
 
+  const handleMottoChange = (e: React.ChangeEvent<HTMLInputElement>) => {
+    onUpdateSettings({ ...settings, motto: e.target.value });
+  };
+
   return (
     <div className="space-y-5">
       {/* Language Selection */}
@@ -103,6 +107,18 @@ const ThemeSettings: React.FC<ThemeSettingsProps> = ({ settings, onUpdateSetting
         </div>
       </div>
 
+      {/* Motto Input */}
+      <div className="space-y-2">
+        <span className="text-xs font-semibold text-white/50 uppercase tracking-wider block">{t.motto}</span>
+        <input
+          type="text"
+          value={settings.motto || ''}
+          onChange={handleMottoChange}
+          className="w-full bg-white/10 border border-white/10 rounded-lg px-3 py-2 text-sm text-white focus:border-white/30 focus:outline-none transition-colors"
+          placeholder={t.enterMotto}
+        />
+      </div>
+
       {/* Toggle settings */}
       <div className="space-y-3">
         <div className="flex items-center justify-between">