feat: add footer with project name, GitHub, portfolio, and LinkedIn links

Co-Authored-By: Claude Sonnet 4.6 <[email protected]>

Author: Syntax-Error-1337

client/src/ui/layout/ShellLayout.tsx

@@ -17,6 +17,36 @@ export const ShellLayout: React.FC<ShellLayoutProps> = ({ children }) => {
     <div className={clsx('flex flex-col h-screen w-screen overflow-hidden', `theme-${mode}`)}>
       <TopNav />
       <main className="flex-1 relative bg-intel-bg">{children}</main>
+      <footer className="flex items-center justify-center gap-3 px-4 py-1 bg-black/60 border-t border-white/10 text-[10px] text-white/40 shrink-0">
+        <span className="font-semibold tracking-widest text-white/60 uppercase">RADAR</span>
+        <span className="text-white/20">·</span>
+        <a
+          href="https://github.com/Syntax-Error-1337/radar"
+          target="_blank"
+          rel="noopener noreferrer"
+          className="hover:text-white/70 transition-colors"
+        >
+          GitHub
+        </a>
+        <span className="text-white/20">·</span>
+        <a
+          href="https://himanshu.pro/"
+          target="_blank"
+          rel="noopener noreferrer"
+          className="hover:text-white/70 transition-colors"
+        >
+          Portfolio
+        </a>
+        <span className="text-white/20">·</span>
+        <a
+          href="https://www.linkedin.com/in/bugbounty/"
+          target="_blank"
+          rel="noopener noreferrer"
+          className="hover:text-white/70 transition-colors"
+        >
+          LinkedIn
+        </a>
+      </footer>
     </div>
   );
 };