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## Custom search metadata for faceting

search, frontmatter

You can now attach your own key-value metadata to a page with the `search-metadata` frontmatter object. Fern copies the block onto every Algolia record for that page and declares each key for faceting, so a custom search integration can group and filter results by your own taxonomy.

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## Per-deployment values in self-hosted docs

self-hosted, customization

A self-hosted container can now resolve environment variables in the pages it serves, on each request. A `${VAR}` whose name is listed in `FERN_RUNTIME_ENV_VARS` is deferred past generation instead of being substituted with its build-time value, so one image serves deployments that differ only in those values.

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