Add in-app account deletion

docs/APP_STORE_CONNECT.md

@@ -139,6 +139,13 @@ WHAT TO TEST
 • Invoices — list includes draft, sent, and paid examples.
 • Settings — profile, theme, optional app lock (PIN / Face ID).
 
+ACCOUNT DELETION
+Settings → Delete account offers permanent in-app account deletion without contacting support.
+After a destructive confirmation, the server removes the account record, sessions, access keys,
+invoices, clients, businesses, recurring invoices, expenses and receipts, time entries, templates,
+audit records, and uploaded files. The app then removes the local account and returns to sign-in.
+The supplied demo account is shared, so please test deletion last if deletion verification is required.
+
 APP LOCK
 Optional. Enable in Settings → App Lock. Face ID uses on-device biometrics only; no biometric data is sent to our servers.
 
@@ -276,6 +283,7 @@ Prerequisites:
 - [ ] TestFlight smoke test on device (login, timer, invoices, app lock)
 - [ ] Live Activity tested on physical iPhone
 - [ ] App Privacy answers match actual data flows
+- [ ] In-app account deletion succeeds from Settings and returns to sign-in
 - [ ] Screenshots uploaded for required device sizes
 - [ ] Review notes include demo credentials and server URL
 - [ ] Export compliance answered