Fix cache-control headers to enable CDN caching of static assets

[Copilot]

Cloudflare was revalidating all JavaScript, CSS, and image files on every request because nginx was not sending cache-control headers.

Changes

Updated nginx configurations for production and staging:

Before:

map $sent_http_content_type $expires {
    "text/html"                 epoch;
    "text/html; charset=utf-8"  epoch;
    default                     off;  # No cache headers sent
}

After:

map $sent_http_content_type $expires {
    "text/html"                 epoch;
    "text/html; charset=utf-8"  epoch;
    default                     1y;
}

map $sent_http_content_type $cache_control {
    "text/html"                 "no-cache, no-store, must-revalidate";
    "text/html; charset=utf-8"  "no-cache, no-store, must-revalidate";
    default                     "public, max-age=31536000, immutable";
}

Static assets (JS/CSS/images) now cache for 1 year with immutable flag. HTML remains uncached. Safe because Nuxt generates content-hashed filenames (app.abc123.js).

Files Modified

• provisioning/production/files/nginx/production.conf
• provisioning/staging/files/nginx/staging.conf

Warning

Firewall rules blocked me from connecting to one or more addresses (expand for details)

I tried to connect to the following addresses, but was blocked by firewall rules:

• iojs.org
  • Triggering command: /usr/bin/curl curl --fail --compressed -q -L -s REDACTED -o - (dns block)

If you need me to access, download, or install something from one of these locations, you can either:

• Configure Actions setup steps to set up my environment, which run before the firewall is enabled
• Add the appropriate URLs or hosts to the custom allowlist in this repository's Copilot coding agent settings (admins only)

Original prompt

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This section details on the original issue you should resolve

<issue_title>Cache-control is preventing cloudflare from caching scripts</issue_title>
<issue_description>For some reason all javascript files are being served directly from origin as cloudflare has to revalidate them every request. This defeats the whole purpose of a CDN. This feels like it's still in "dev" mode where it's never caching anything.</issue_description>

Comments on the Issue (you are @copilot in this section)

• Fixes Cache-control is preventing cloudflare from caching scripts #744

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