chore: remove debug logging and refine UI polish for overlay components

client/app/dashboard/page.tsx

@@ -239,8 +239,9 @@ function useOverlaySelection() {
         // Heartbeat - connection is alive
       });
 
-      globalSSEConnection.onerror = () => {
-        console.error('[Dashboard] SSE error');
+      globalSSEConnection.onerror = (error) => {
+        console.error('[Dashboard] SSE connection error - will auto-reconnect', error);
+        // EventSource automatically reconnects, no action needed
       };
     }
 

client/app/globals.css

@@ -918,7 +918,7 @@ main {
 .overlay__card {
   background: #1f1f1f;
   border: 1px solid #3a3a3a;
-  border-radius: 8px;
+  border-radius: 16px;
   padding: 1rem 1.5rem;
   display: flex;
   flex-direction: column;
@@ -927,6 +927,7 @@ main {
   max-width: 95vw;
   animation: fadeIn 0.4s ease-out;
   box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
+  overflow: hidden;
 }
 
 .overlay__card--fadeOut {

client/app/overlay/page.tsx

@@ -128,11 +128,7 @@ export default function OverlayPage() {
             </>
           )}
         </div>
-      ) : (
-        <div className="overlay__placeholder">
-          <span>{connected ? 'Awaiting selection…' : 'Reconnecting…'}</span>
-        </div>
-      )}
+      ) : null}
     </main>
   );
 }