BarangaySystem/ai-docs/todo-completed/todo-c7f93cd561.md

• Add loading state guard to startNewSession and completeTransaction actions in resources/js/stores/pos.js to prevent race conditions.
• Update the "Confirm & Pay" button in resources/js/Pages/PosMain.vue to be disabled when posStore.loading is true and add a loading spinner.
• Modify the getPosSessions method in app/Http/Controllers/Market/PosController.php to exclude sessions with status active from the history records.
• Test the checkout flow to ensure that double-clicking the completion button does not trigger multiple new session initializations.
• Verify that the "empty transaction" is no longer visible in the POS History table upon completion of a sale.