Solo games run entirely in the browser, so the server previously had no
idea who was playing right now (it only saw logins and finished games).
This adds lightweight presence reporting and an admin dashboard.
Presence (server):
- POST /api/presence (logged-in users): heartbeat while a solo game runs,
stores username, map (validated), difficulty, wave, since/lastSeen per
user; entries expire automatically after 90s without a heartbeat
- POST /api/presence/stop: explicit removal when the player exits
Admin API (ADMIN_USERS env, comma-separated usernames):
- GET /api/admin/overview: live solo players, multiplayer room summaries
(code, mode, map, players — the server already tracks rooms), and
global stats (accounts, rounds, crystals in circulation)
- GET /api/admin/users?limit=100: user list with stats, newest login first
- publicUser now carries an admin flag; non-admins get 403
Admin UI (src/components/AdminDashboard.vue, served at /admin):
- Login gate for guests/non-admins (guest profiles are detected via
isLoggedIn, not just user presence)
- KPI cards, live solo table (player, map, difficulty, wave, duration),
room table, and account table; auto-refresh every 5 seconds
- App.vue renders the dashboard for /admin instead of the game and runs
a screen watcher that starts/stops the solo presence heartbeat
Config: ADMIN_USERS documented in docker-compose.yml and README.
Tests: 6 new integration checks (admin flag, presence report/stop,
403 guard, overview contents, user list) — 37/37 green, build clean.
Verified end-to-end in the browser: guest gate, admin login, and a live
second player (map/difficulty/wave) appearing in the dashboard.
- Add CSP, frame and referrer headers for served static files
- Enforce WebSocket origin check to prevent cross-site hijacking
- Trust X-Forwarded-For only when the peer is from a private proxy network
- Limit concurrent connections (500 total / 20 per IP) and rooms (300)
- Add ALLOWED_ORIGINS env var for additional WebSocket origins
- Document reverse proxy setup (NPM/NPMplus) in README
- Add scripts/security-test.mjs to verify origin and limit behavior
- Add Dockerfile (multi-stage build, unprivileged user, healthcheck),
docker-compose.yml and .dockerignore
- Server now serves static dist/ frontend and WebSocket relay on a
single port (PORT, default 3001) with path-traversal protection,
immutable asset caching and SPA fallback
- Client connects via same origin in production; dedicated ws port is
only used for vite dev/preview
- Document Docker usage, env vars and manual production mode in README
