Tags aren't auto-updating

Tags in foodstuffs/recipes just return a static list.

Look for files related to foodstuffs, recipes, and tags in the codebase. The issue mentions tags return a static list, so find where tags are fetched or generated. Check if there's a database or data source for tags that should be updated. Running the application and testing the tag functionality will help understand the current behavior.

索引モデルが issue の本文から書いたものです。