feat(attendance): 주말+회사 휴무일 통합 처리

- monthlyComparisonModel: getCompanyHolidays 추가
- monthlyComparisonController: isHoliday에 company_holidays 포함 + holiday_name
- proxyInputModel: getDailyStatus에 is_holiday/holiday_name 추가
- proxy-input.js: 휴무일 배너 + both_missing 작업자 비활성화 (특근자는 활성 유지)
- 마이그레이션: 2026년 공휴일 16건 일괄 INSERT

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

system1-factory/api/controllers/monthlyComparisonController.js

@@ -22,10 +22,11 @@ function determineStatus(report, attendance, isHoliday) {
 
 // 날짜별 비교 데이터 생성
 async function buildComparisonData(userId, year, month) {
-  const [reports, attendances, confirmation] = await Promise.all([
+  const [reports, attendances, confirmation, holidays] = await Promise.all([
     Model.getWorkReports(userId, year, month),
     Model.getAttendanceRecords(userId, year, month),
-    Model.getConfirmation(userId, year, month)
+    Model.getConfirmation(userId, year, month),
+    Model.getCompanyHolidays(year, month)
   ]);
 
   // 날짜 맵 생성
@@ -57,7 +58,7 @@ async function buildComparisonData(userId, year, month) {
     const date = new Date(year, month - 1, day);
     const dateStr = `${year}-${String(month).padStart(2, '0')}-${String(day).padStart(2, '0')}`;
     const dayOfWeek = date.getDay();
-    const isHoliday = dayOfWeek === 0 || dayOfWeek === 6;
+    const isHoliday = dayOfWeek === 0 || dayOfWeek === 6 || holidays.dateSet.has(dateStr);
 
     const report = reportMap[dateStr] || null;
     const attend = attendMap[dateStr] || null;
@@ -89,6 +90,7 @@ async function buildComparisonData(userId, year, month) {
       date: dateStr,
       day_of_week: DAYS_KR[dayOfWeek],
       is_holiday: isHoliday,
+      holiday_name: holidays.nameMap[dateStr] || (dayOfWeek === 0 || dayOfWeek === 6 ? '주말' : null),
       work_report: report ? {
         total_hours: parseFloat(report.total_hours),
         entries: [{ project_name: report.project_names || '', work_type: report.work_type_names || '', hours: parseFloat(report.total_hours) }]