Init multiplayer

deploy/SETUP.md

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+# Production Setup
+
+## 1) Install systemd service
+
+```bash
+sudo cp /repos/music-jeopardy/deploy/systemd/music-jeopardy-realtime.service /etc/systemd/system/
+sudo systemctl daemon-reload
+sudo systemctl enable --now music-jeopardy-realtime.service
+sudo systemctl status music-jeopardy-realtime.service
+```
+
+## 2) Install nginx config
+
+```bash
+sudo cp /repos/music-jeopardy/deploy/nginx/jeopardy.toppit.net.conf /etc/nginx/sites-available/jeopardy.toppit.net
+sudo ln -sf /etc/nginx/sites-available/jeopardy.toppit.net /etc/nginx/sites-enabled/jeopardy.toppit.net
+sudo nginx -t
+sudo systemctl reload nginx
+```
+
+## 3) Verify
+
+1. Open `https://jeopardy.toppit.net`
+2. Create a session in the app (`Game ID`)
+3. Open a second browser/device and join by same `Game ID`

deploy/nginx/jeopardy.toppit.net.conf

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+server {
+    listen 443 ssl;
+    server_name jeopardy.toppit.net;
+
+    root /www/jeopardy;
+    index index.html;
+
+    # SPA routing for Vue Router / client-side routes
+    location / {
+        try_files $uri $uri/ /index.html;
+    }
+
+    # Realtime session API + websocket
+    location /realtime/ {
+        proxy_pass http://127.0.0.1:8787/;
+        proxy_http_version 1.1;
+        proxy_set_header Upgrade $http_upgrade;
+        proxy_set_header Connection "upgrade";
+        proxy_set_header Host $host;
+        proxy_set_header X-Real-IP $remote_addr;
+        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
+        proxy_set_header X-Forwarded-Proto $scheme;
+    }
+
+    ssl_certificate /etc/letsencrypt/live/jeopardy.toppit.net/fullchain.pem;
+    ssl_certificate_key /etc/letsencrypt/live/jeopardy.toppit.net/privkey.pem;
+}

deploy/systemd/music-jeopardy-realtime.service

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+[Unit]
+Description=Music Jeopardy Realtime Server
+After=network.target
+
+[Service]
+Type=simple
+User=www-data
+WorkingDirectory=/repos/music-jeopardy
+Environment=NODE_ENV=production
+Environment=REALTIME_PORT=8787
+ExecStart=/usr/bin/npm run realtime:server
+Restart=always
+RestartSec=2
+
+[Install]
+WantedBy=multi-user.target