Fix off-by-one in first presence message

server/index.ts

@@ -23,12 +23,12 @@ const server = Bun.serve<WebsocketData>({
     open(ws) {
       // register newly connected client and tell them how many other people are there
       console.log('Connection opened', ws.data.clientId)
-      clients.set(ws.data.clientId, ws)
       const enterNotice = JSON.stringify(<Message>{
         type: 'presence-information',
         others: clients.size,
       })
-      for (const [uuid, client] of clients.entries()) {
+      clients.set(ws.data.clientId, ws)
+      for (const client of clients.values()) {
         client.send(enterNotice, true)
       }
     },