rules:

• name: "Astro Frontmatter Rules" description: "Guidelines for writing valid Astro frontmatter in .astro files." content: |
  1. Always place frontmatter at the very top of the file.
  2. Use triple dashes (---) to open and close the block.
  3. Only one frontmatter block per .astro file.
  4. Use frontmatter for:
     • Imports
     • Declaring constants and variables
     • Exporting metadata with export const
     • Accessing Astro.props in components
     • Async data fetching (using await)
  5. Do NOT:
     • Use DOM APIs (document, window)
     • Add client-side scripts here

  6. Everything exported becomes available in the template: Example:

     export const title = "OSS Communities";

     <h1>{title}</h1>

  7. For components, destructure props from Astro.props:

     const { heading } = Astro.props;

  8. Keep heavy logic outside frontmatter (move to utility files).