NEXUS POS — PRODUCTION UPDATE PHASE 19.09.3
Runtime: 20260930.261
Cumulative from: Phase 19.08.8 / runtime 20260930.257

1. Back up the production Nexus files and database.
2. Upload/extract this ZIP over the existing Nexus application root.
3. This production update intentionally DOES NOT include config/database.php or production credentials.
4. No database migration is required.
5. Sign in to one Bookshop client, install/accept the new Nexus update once, then refresh/reopen the PWA.
6. Verify POS category collapse and the POS-style product browser in Restock, Stock Adjustment, Stock Movements, Stock Audit, Production and Reports.
7. Confirm the selected working shop remains locked for the login session exactly as before.
