Three bugs rega found on a laptop run of the container (2026-09-29):
- /pb/_/ never rendered. admin.mjs proxied with fetch(), which returns the body decompressed,
but forwarded PocketBase's Content-Encoding: gzip and Content-Length, so the browser tried to
gunzip plain HTML. The proxy now drops both headers (for /pb and /api-prod).
- PocketBase's own redirects left the mount: /pb/_ went to /_/, and /pb/_/index.html to
http://127.0.0.1:8090/_/ (the internal address). Root-relative and upstream-absolute
locations are put back under the mount: /pb/_/.
- The research host's /embed-test set no MAP_APP_API_URL, so the maps asked that static host's
own /api (404s; dashboard-plus-grid drew 489 nodes, not 1,399). The page now sets it from the
manifest's runtime.apiBaseUrl before any bundle loads, as every generated page does.
Checked both ways against an upstream that answers like PocketBase (gzipped HTML, redirects
to /_/). The old proxy sends a gzip label on a plain body and /_/ locations; the new one
sends a decodable body and /pb/_/.
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