The first version of vhost.d/<host>_location nested four `location { … }`
blocks (for /_astro/, images, /sw.js, /llms.txt) inside the proxy's
generated `location / { … }` to set Cache-Control. nginx accepts the
syntax, but a nested location with no `proxy_pass` directive falls through
to filesystem root and 404s the asset — which is why CSS / JS / images
were missing on the live site even though the HTML loaded fine.
Astro already emits sensible Cache-Control on hashed _astro bundles, so
we don't need the proxy to set them. Removed all four nested blocks; the
vhost.d files now only carry proxy headers, gzip, and security headers,
all of which are valid inside a location {} block without proxy_pass.
Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>
9b7fd15ca1