- add a content textarea (size huge) after description, with en and pl phrases
- add content to Category.Fillable
- export classes.CheckHTML and run it from FormBeforeCreate and FormBeforeUpdate:
unsafe category content answers 422 on content, blank content is stored as NULL
- add the nullable TEXT column golem15_journal_categories.content (migration 202610090001)
- map it as models.Category.Content and emit category content on every categories row
- document the categories row shape and the stored-as-is HTML semantics