refactor: fix all Low findings from FLAWS_REPORT audit

- Auth: TOTP params from config, JWT error logging, audit log failure
  logging, replaced_by_hash validation on token rotation
- Invoices: remove dead VAT code, consistent PDF permissions,
  WebP magic-byte detection, deduped exchange-rate fetches
- Orders/Offers: multipart limit from config, use paginated() helper,
  payment method from DB in PDF
- Projects: verify project exists before creating note
- Attendance: action_type enum validation, consistent local-time
  shift_date construction, holiday attendance in work fund,
  trips.view permission on last-km query
- Users: paginated() helper usage, remove duplicate dashboard keys,
  parallel currency conversion, single hashToken implementation
- Frontend: memoized customInput, reliable print onload, modal prop
  standardization (isOpen), ConfirmModal type icons, id===0 key
  fallback, Login useCallback, CompanySettings ConfirmModal,
  Attendance timeout cleanup, Dashboard memoization, beforeunload
  dirty-state warnings on Invoice/Offer/Order detail
- Schema: invoice_alert_log timestamp, config/env comment on
  Date.prototype.toJSON override
- Utils: exchange-rate inflight dedup

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>

src/admin/components/BulkAttendanceModal.tsx

@@ -17,7 +17,7 @@ interface BulkAttendanceUser {
 }
 
 interface BulkAttendanceModalProps {
-  show: boolean;
+  isOpen: boolean;
   onClose: () => void;
   form: BulkAttendanceForm;
   setForm: (form: BulkAttendanceForm) => void;
@@ -29,7 +29,7 @@ interface BulkAttendanceModalProps {
 }
 
 export default function BulkAttendanceModal({
-  show,
+  isOpen,
   onClose,
   form,
   setForm,
@@ -39,11 +39,11 @@ export default function BulkAttendanceModal({
   toggleUser,
   toggleAllUsers,
 }: BulkAttendanceModalProps) {
-  useModalLock(show);
+  useModalLock(isOpen);
 
   return (
     <AnimatePresence>
-      {show && (
+      {isOpen && (
         <motion.div
           className="admin-modal-overlay"
           initial={{ opacity: 0 }}