fix: use nextform.png logo across all components

apps/admin/src/components/ui/Sidebar.tsx

@@ -68,12 +68,17 @@ export function Sidebar() {
         <aside className="w-64 bg-gradient-to-b from-slate-900 via-slate-900 to-slate-950 text-white h-screen fixed left-0 top-0 flex flex-col border-r border-slate-800/50 shadow-2xl">
             {/* Logo Section */}
             <div className="p-6 border-b border-slate-800/50">
-                <div className="flex items-center justify-center">
+                <div className="flex items-center gap-3 justify-center">
                     <img 
-                        src="/nextform-logo.svg" 
+                        src="/nextform.png" 
                         alt="NextForm" 
-                        className="h-14 w-14"
+                        className="h-10 w-10"
                     />
+                    <div>
+                        <h1 className="text-lg font-black bg-gradient-to-r from-blue-400 via-cyan-400 to-blue-300 bg-clip-text text-transparent">
+                            NextForm
+                        </h1>
+                    </div>
                 </div>
             </div>