The player location's COOP/COEP add_header never fires: try_files
internally redirects /rom/<id>/ejs to /index.html, served by
"location /" — so SharedArrayBuffer cores (PSP/DS) fail with a
misleading "must be run over HTTPS" error.
Apply upstream RomM's own fix (docker nginx template): map
$request_uri — which survives the redirect — to header values for the
ejs and jsdos player paths, emit them from "location /", and drop the
dead player location. Also restore upstream's Cache-Control "no-cache"
on the SPA shell, without which a cached index.html hides the headers
and stale frontends survive RomM updates.
Widen the updater's migration gate so existing installs converge.
adotagarwal
7bc2815df7