fix(monthly-comparison): 근태 인라인 수정 — vacation_type_id 응답 추가 + 조퇴 옵션

- API 응답에 attendance_type_id, vacation_type_id, vacation_days 포함
- 드롭다운에 조퇴(id=10) 옵션 추가
- onVacTypeChange에 조퇴→2시간 매핑

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

system1-factory/api/controllers/monthlyComparisonController.js

@@ -98,7 +98,10 @@ async function buildComparisonData(userId, year, month) {
       attendance: attend ? {
         total_work_hours: parseFloat(attend.total_work_hours),
         attendance_type: attend.attendance_type_name || '',
-        vacation_type: attend.vacation_type_name || null
+        attendance_type_id: attend.attendance_type_id || null,
+        vacation_type: attend.vacation_type_name || null,
+        vacation_type_id: attend.vacation_type_id || null,
+        vacation_days: attend.vacation_days ? parseFloat(attend.vacation_days) : null
       } : null,
       status,
       hours_diff: hoursDiff