if (data.success) {
        const allAttendance = Array.isArray(data.data) ? data.data : [];
        const uniqueAttendance = dedupeAttendanceByEmployeeId(allAttendance);
        const initialCreditedDays = buildCreditedDaysByEmployee(allAttendance);

        setAttendanceData(uniqueAttendance);
        setCreditedDays(initialCreditedDays);
        setSummaryCounts(buildSummaryCounts(uniqueAttendance));
        writeCache(ATTENDANCE_CACHE_KEY, { attendanceData: uniqueAttendance, creditedDays: initialCreditedDays });
        return uniqueAttendance;