What’s fixed

• bin/ci passes in a site whose content is files. Nibble’s own tests read the site’s content/ while running against their fixture schemas, so every page in it was measured against a blueprint that schema had never heard of and the suite fell over. Tests now read content of their own.
• A page naming a blueprint the schema has not got is reported, not raised. nibble:build names it the way it names a missing id:, so one page cannot take the whole index down.

Changed

• A release records the moment it was cut, not just the day. A bare date carries no time zone, so anything reading the feed as UTC could date a release the day either side of the one it was cut on. The feed carries released_at alongside date, which stays the calendar day a site shows.