Drop companyId from company-scoped store wrappers and routes, add GET /entity/next-number plus optional number on entity create/update, and document dashdbschema API.md lookup in sibling-repos.
- Add GET /api/articleIndex returning the article search index (listSearchIndex)
- Add GET /api/category/export.zip returning a kategorien.zip with a
Windows-1252 CSV (depth-first, Ebene N columns) plus one AVIF per category image
(content-addressed, deduplicated) using jszip