Fixed: customer search keeps your latest results

If you search again while an earlier customer search is still loading, the earlier result can no longer replace your latest results or customer count. Errors from superseded searches also stop appearing after a newer search succeeds. The customer summary count now updates alongside the list when you search or refresh. Opening customer details also keeps your latest selection: delayed replies cannot replace it or reopen details after you leave, go back or edit. Customer details also load their independent history sections together, reducing the wait for the full record. A save finishing in the background also keeps a newer customer editor open, protecting the draft you are currently working on. Adding a customer now also preserves a new draft typed while the request is pending, and delayed completion keeps your current editor or page in place. Delayed customer refresh, search and clear-search actions also leave a newer page or editor untouched. Adding a custom field now keeps unsaved customer details and any newer field draft in place, while making the new field available immediately. Removing a custom field also preserves other unsaved customer details, and your allowance and Add field controls update immediately as slots fill or become available. A customer deletion finishing in the background also keeps a newer page or editor intact. Import completion preserves a newer file selection and your current view, keeps the report available when you return, and prevents an older upload from replacing the latest report. Completed imports also show their report if the customer list cannot refresh, with a clear prompt to refresh the list. Errors from an older upload no longer interrupt a newer import or another page.