Release v0.5.4

[k3mpaxl]

Version 0.5.4 for the tag v0.5.4, which publishes k3mpaxl/factgraph:0.5.4 (amd64 and arm64).

Since v0.5.3

• Logs (k3mpaxl/FactGraph#8):
  • board IDs no longer appear in server logs (/boards/<board>);
  • logs show the client's real IP behind App Service (FORWARDED_ALLOW_IPS);
  • a browser that closes before hello no longer causes a traceback.
• Relay (k3mpaxl/FactGraph#9):
  • per-browser queues;
  • a heartbeat that frees vanished connections in the App Service WebSocket limit;
  • send backpressure;
  • a 120 s pong timeout;
  • a hint when a board is open in several tabs of one browser.

The version is updated in app/main.py (FastAPI and MCP), web/package.json and its lockfile, deploy/publish-multiarch.sh and the README.

After deploying, pin k3mpaxl/factgraph:0.5.4 in App Service and restart once. The restart also frees the vanished connections still counted against the WebSocket limit.

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