The live host nginx config (/etc/nginx/sites-enabled/overlord) was not
tracked in git, leading to drift. This commit checks in a source-of-truth
copy under nginx/overlord.conf with a deploy procedure documented at the
top of the file.
Includes the proxy_read_timeout/proxy_send_timeout 1d settings for both
WebSocket location blocks (/websocket/ and /). Without these, nginx's
default 60s timeout drops idle plugin connections in a reconnect loop —
the symptom users saw was "WebSocket error … State: Aborted" every
~60s on idle characters.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
