feat(auth): add 2FA with OTP, backup codes and trusted devices

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

src/modules/reports/views/CashView.vue

@@ -428,7 +428,10 @@ const handleLogout = async () => {
 
 // Handle server switched event from drawer menu
 const handleServerSwitched = async (newServerId) => {
-  // Server switch already completed in MobileDrawerMenu modal
+  // Clear selected company and period FIRST to prevent stale data from old server
+  companyStore.clearSelectedCompany();
+  periodStore.reset();
+
   // Reload data for the new server
   await companyStore.loadCompanies();
   if (companyStore.selectedCompany?.id_firma) {