Changing the store currency after selling starts mixes up books and reports

Why this happens

Because stored amounts are bare numbers read against the store's current currency on some screens, so switching currency makes an old EGP amount suddenly read as USD with no real conversion behind it.

What Vareons does about it

The post-first-order lock blocks casual switching from the UI, the immutable per-order currency snapshot keeps reports, invoices, and marketing tracking in their original currency, and every currency change is written to the CurrencyChangeLog for audit.

• store.currency.lock-after-first-order — Currency lock after first order: Available
• store.currency.order-snapshot — Immutable order currency snapshot: Available
• store.currency.gateways-convert-at-pay — Gateway currency conversion at pay time: Available

Limitations

The lock does not replace choosing the right currency before the first order; review the gateways you will charge with, since some convert locally and may present a different amount than the shopper saw at checkout.