style: update Logo and Kit title styling in App Shell

components/layout/AppSidebar.tsx

@@ -111,10 +111,10 @@ export function AppSidebar() {
         <div className="flex h-16 items-center justify-between px-6 shrink-0 border-b border-border">
           <Link href="/" className="flex items-center gap-3 group overflow-hidden">
             <div className="shrink-0">
-              <Logo size={isCollapsed ? 32 : 32} />
+              <Logo size={isCollapsed ? 24 : 24} />
             </div>
             {!isCollapsed && (
-              <span className="font-bold text-xl bg-clip-text text-transparent bg-gradient-to-r from-purple-400 via-pink-400 to-cyan-400 group-hover:opacity-80 transition-opacity whitespace-nowrap">
+              <span className="font-bold text-xl bg-clip-text text-transparent bg-gradient-to-r from-purple-400 to-pink-400 group-hover:opacity-80 transition-opacity whitespace-nowrap">
                 Kit
               </span>
             )}