refactor: add bottom border and spacing to AgentBento section

- Added horizontal border line with border-gray-800 styling
- Added transparent spacer div with py-6 padding and max-w-7xl container
- Applied vertical borders (left/right only) to spacer using border-t-0 border-b-0

src/pages/agents/AgentBento.tsx

@@ -161,6 +161,9 @@ export function AgentBento() {
           ))}
         </div>
       </div>
+      {/* ✅ Bottom horizontal line with spacing */}
+      <div className="w-full border-b  border-gray-800" />
+      <div className="max-w-7xl bg-transparent mx-auto py-6 border border-t-0 border-b-0 border-gray-800"></div>
     </section>
   );
 }