View counter

frontend.css

@@ -55,6 +55,10 @@ body {
 .header {
   flex-shrink: 0;
   margin-bottom: 28px;
+  display: flex;
+  align-items: center;
+  justify-content: space-between;
+  gap: 12px;
 }
 
 .logo {
@@ -67,6 +71,37 @@ body {
   width: auto;
 }
 
+.viewer-pill {
+  display: inline-flex;
+  align-items: center;
+  gap: 8px;
+  font-family: var(--mono);
+  font-size: 11px;
+  letter-spacing: 0.4px;
+  text-transform: uppercase;
+  color: var(--text-dim);
+  border: 1px solid var(--border);
+  background: rgba(255, 255, 255, 0.02);
+  border-radius: 999px;
+  padding: 6px 10px;
+  white-space: nowrap;
+}
+
+.viewer-pill__dot {
+  width: 7px;
+  height: 7px;
+  border-radius: 50%;
+  background: #22c55e;
+  box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.45);
+  animation: viewer-pulse 1.8s ease-out infinite;
+}
+
+@keyframes viewer-pulse {
+  0% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.45); }
+  70% { box-shadow: 0 0 0 7px rgba(34, 197, 94, 0); }
+  100% { box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
+}
+
 /* ── Arena ────────────────────────────────────────────────────── */
 
 .arena {

frontend.tsx

@@ -20,7 +20,7 @@ type RoundState = {
   scoreB?: number;
 };
 type GameState = { completed: RoundState[]; active: RoundState | null; scores: Record<string, number>; done: boolean };
-type ServerMessage = { type: "state"; data: GameState; totalRounds: number };
+type ServerMessage = { type: "state"; data: GameState; totalRounds: number; viewerCount: number };
 
 // ── Model colors & logos ─────────────────────────────────────────────────────
 
@@ -298,6 +298,7 @@ function ConnectingScreen() {
 function App() {
   const [state, setState] = useState<GameState | null>(null);
   const [totalRounds, setTotalRounds] = useState<number | null>(null);
+  const [viewerCount, setViewerCount] = useState(0);
   const [connected, setConnected] = useState(false);
 
   useEffect(() => {
@@ -318,6 +319,7 @@ function App() {
         if (msg.type === "state") {
           setState(msg.data);
           setTotalRounds(msg.totalRounds);
+          setViewerCount(msg.viewerCount);
         }
       };
     }
@@ -343,6 +345,10 @@ function App() {
             <a href="/" className="logo">
               <img src="/assets/logo.svg" alt="Qwipslop" />
             </a>
+            <div className="viewer-pill" aria-live="polite">
+              <span className="viewer-pill__dot" />
+              {viewerCount} viewer{viewerCount === 1 ? "" : "s"} watching
+            </div>
           </header>
 
           {state.done ? (

server.ts

@@ -36,7 +36,10 @@ if (allRounds.length > 0) {
       }
     }
   }
-  initialCompleted = [allRounds[allRounds.length - 1]];
+  const lastRound = allRounds[allRounds.length - 1];
+  if (lastRound) {
+    initialCompleted = [lastRound];
+  }
 }
 
 const gameState: GameState = {
@@ -52,7 +55,12 @@ const gameState: GameState = {
 const clients = new Set<ServerWebSocket<unknown>>();
 
 function broadcast() {
-  const msg = JSON.stringify({ type: "state", data: gameState, totalRounds: runs });
+  const msg = JSON.stringify({
+    type: "state",
+    data: gameState,
+    totalRounds: runs,
+    viewerCount: clients.size,
+  });
   for (const ws of clients) {
     ws.send(msg);
   }
@@ -111,13 +119,14 @@ const server = Bun.serve({
   websocket: {
     open(ws) {
       clients.add(ws);
-      ws.send(JSON.stringify({ type: "state", data: gameState, totalRounds: runs }));
+      broadcast();
     },
     message(_ws, _message) {
       // Spectator-only, no client messages handled
     },
     close(ws) {
       clients.delete(ws);
+      broadcast();
     },
   },
   development: process.env.NODE_ENV === "production" ? false : {