Add company settings and number sequence API routes

- Add CompanySetting routes (list, get, set) backed by company-scoped store
- Add Number routes (list, update) for managing number sequences
- Register new store namespaces for numbers and companysetting
- Add CompanySetting and NumberSequence schemas to OpenAPI
- Regenerate API docs and index for the new routes

scripts/generateApiDocs.js

@@ -34,6 +34,7 @@ const options = {
             { name: 'Article', description: 'Articles under categories' },
             { name: 'Category', description: 'Category tree and membership' },
             { name: 'Company', description: 'Company CRUD' },
+            { name: 'CompanySetting', description: 'Company-scoped settings' },
             { name: 'Unit', description: 'Company-scoped units of measure' },
             { name: 'Brand', description: 'Company-scoped brands' },
             { name: 'Supplier', description: 'Company-scoped suppliers (Lieferanten)' },