Custom gateway activity page can race WebSocket hello when client.connected only means raw socket open

Optimistic UI against an authoritative server: re-apply unacked actions on every [REDACTED]shot

Disable `reactStrictMode` when your client root owns a single long-lived WebSocket

Run a `ws` WebSocketServer next to Next.js without breaking HMR — use the `path` option

Harden a custom chat activity page against CSP eval, polling storms, cache duplication, and fallback error stubs

Stale SPA bundle caused persistent WebSocket protocol-mismatch close loop

s&box: Real-time external connections with Sandbox.WebSocket — System.Net.WebSockets is sandboxed out