- the /_journal/api/v1 post writes convert default and translated content
in the write transaction and answer an additive notices key
- journal:import-posts converts and prints the converted count
(ImportFromDirConfig, ImportStats.H1Converted)
- a category's pillar text saved in the admin answers
editor.h1_converted_category
- every GET /categories row reports content_h1_to_h2 (additive key)
- 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
