Add Settings > Учебный каталог, off by default and available on ordinary writable profiles. Load ready example boxes, photos, TTKs and linked sample inventory additively; preserve own data, saved orders and edited examples when hiding or re-enabling. Respect company/profile scope, read-only permissions, failed downloads and tenant changes. Preserve the opened recipe guide across real catalog refreshes on iPhone. Integrated feature checks and full pull-request QA passed. Standard main QA and exact-asset production UI verification remain in place.
