Block invalid catalog_items writes at the API level (points currency allowlist, non-negative prices, positive amount, limited stack >= sold count, unique sibling order numbers) and auto-assign unique order numbers on bulk create. Add a catalog-maintenance scan + transactional repair that fixes pre-existing rows: resets unsupported points_type, clamps negative costs, sets amount to 1, raises limited_stack, renumbers duplicate orders and deletes offers with missing page/item references. Surface the issue count and a fix button in the admin maintenance panel. Also: add enabled/retired flag to clone sources, classify poster and currency furniture in item-kind, and remove the obsolete update-Nitrov3.sh.
Draft SQL from pnpm db:generate (drizzle-kit). Never apply these automatically — copy reviewed statements into drizzle/migrations/ as numbered CMS migrations, then pnpm db:migrate.