Fix JSON-LD Course schema validation by adding missing offers and hasCourseInstance fields

[Copilot]

Problem

The JSON-LD Course schema was failing validation with 2 critical errors:

• Missing required offers field
• Missing required hasCourseInstance field

This was causing schema.org validation failures for the course structured data, potentially impacting SEO and search engine understanding of the educational content.

Solution

Added the missing required fields to the Course JSON-LD schema in astro.config.mjs:

Added offers field

"offers": {
  "@type": "Offer",
  "price": "0",
  "priceCurrency": "EUR", 
  "availability": "https://schema.org/InStock",
  "url": "https://t128n.github.io/open-fidup"
}

Added hasCourseInstance field

"hasCourseInstance": {
  "@type": "CourseInstance",
  "courseMode": "online",
  "courseWorkload": "PT12H",
  "instructor": {
    "@type": "Person",
    "name": "Torben Haack"
  }
}

Validation

• ✅ Project builds successfully
• ✅ TypeScript type checking passes (0 errors)
• ✅ Generated HTML contains valid JSON-LD with both required fields
• ✅ Schema correctly reflects that this is a free online course

The changes are minimal and surgical - only 16 lines added to fix the specific schema validation issues while maintaining all existing functionality.

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:

• https://api.github.com/repos/t128n/open-fidup/contributors
  • Triggering command: node /home/REDACTED/work/open-fidup/open-fidup/node_modules/.bin/astro build (http block)
• telemetry.astro.build
  • Triggering command: node /home/REDACTED/work/open-fidup/open-fidup/node_modules/.bin/astro build (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)

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[t128n]

Looks good to me