NEXUS POS Phase 19.10.11 — Bookshop Paystack POS Sandbox
Runtime 20261021.283 | Requires previous runtime 20261021.282

1. Back up files, operational client databases and storage/security keys.
2. Upload the incremental LOCALHOST UPDATE ZIP through Super Admin -> Updates,
   or overlay its contents onto the active Nexus application after backup.
3. Open Bookshop -> Settings -> M-Pesa / Paystack, select a shop, confirm its
   test credentials and check its TEST webhook URL.
4. In Bookshop POS, create a small KSh 1-100 test cart, open Collect Payment,
   and click Test M-Pesa STK. No actual sale will be posted.
5. Check status, history, duplicate requests and different shop accounts.

No manual migrations. Do not enable or attempt LIVE payments through this build.
