[app] Tab color match

ui/desktop/src/components/Tabs.tsx

@@ -49,7 +49,7 @@ export default function Tabs({ chats, selectedChatId, setSelectedChatId, setChat
           >
             <path 
               d="M25 11C25 4.92487 29.9249 0 36 0H114C120.075 0 125 4.92487 125 11V13C125 19.0751 129.925 24 136 24H146.5H0H14C20.0751 24 25 19.0751 25 13V11Z" 
-              fill={selectedChatId === chat.id ? '#E4F6FA' : 'rgba(254, 254, 254, 0.80);'}
+              fill={selectedChatId === chat.id ? 'rgba(226, 245, 251, 1)' : 'rgba(254, 254, 254, 0.80);'}
             />
           </svg>
           <div className="relative z-10 flex items-center justify-center tab-type text-center w-full">

ui/desktop/tailwind.config.ts

@@ -26,7 +26,6 @@ export default {
       colors: {
         background: 'var(--background)',
         foreground: 'var(--foreground)',
-        tab: '#E9F7FA',
 
         'splash-pills': 'rgba(255, 255, 255, 0.60)',
         'splash-pills-text': 'rgba(0, 0, 0, 0.60)',