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/routes/admin/users.ts

@@ -2,7 +2,7 @@ import { FastifyInstance } from "fastify";
 import prisma from "../../config/database";
 import { requirePermission } from "../../middleware/auth";
 import { logAudit } from "../../services/audit";
-import { success, error, parseId } from "../../utils/response";
+import { success, error, parseId, paginated } from "../../utils/response";
 import { parsePagination, buildPaginationMeta } from "../../utils/pagination";
 import { parseBody } from "../../schemas/common";
 import { CreateUserSchema, UpdateUserSchema } from "../../schemas/users.schema";
@@ -25,15 +25,11 @@ export default async function usersRoutes(
       const params = parsePagination(request.query as Record<string, unknown>);
       const result = await listUsers(params);
 
-      return reply.send({
-        success: true,
-        data: result.users,
-        pagination: buildPaginationMeta(
-          result.total,
-          result.page,
-          result.limit,
-        ),
-      });
+      return paginated(
+        reply,
+        result.users,
+        buildPaginationMeta(result.total, result.page, result.limit),
+      );
     },
   );