refactor: worker_id → user_id 전체 마이그레이션 (Phase 1-4)

sso_users.user_id를 단일 식별자로 통합. JWT에서 worker_id 제거,
department_id/is_production 추가. 백엔드 15개 모델, 11개 컨트롤러,
4개 서비스, 7개 라우트, 프론트엔드 32+ JS/11+ HTML 변환.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

system1-factory/web/pages/admin/attendance-report.html

@@ -271,7 +271,7 @@
           const select = document.getElementById('workerFilter');
           workers.forEach(worker => {
             const option = document.createElement('option');
-            option.value = worker.worker_id;
+            option.value = worker.user_id;
             option.textContent = worker.worker_name;
             select.appendChild(option);
           });
@@ -297,7 +297,7 @@
           params: {
             start_date: startDate,
             end_date: endDate,
-            worker_id: workerId || undefined
+            user_id: workerId || undefined
           }
         });
 
@@ -306,7 +306,7 @@
           params: {
             start_date: startDate,
             end_date: endDate,
-            worker_id: workerId || undefined
+            user_id: workerId || undefined
           }
         });
 
@@ -340,10 +340,10 @@
 
       // 출퇴근 기록 맵핑
       attendanceRecords.forEach(record => {
-        const key = `${record.attendance_date}_${record.worker_id}`;
+        const key = `${record.attendance_date}_${record.user_id}`;
         dateWorkerMap.set(key, {
           date: record.attendance_date,
-          worker_id: record.worker_id,
+          user_id: record.user_id,
           worker_name: record.worker_name,
           attendance: record,
           reports: []
@@ -352,13 +352,13 @@
 
       // 작업 보고서 맵핑
       workReports.forEach(report => {
-        const key = `${report.report_date}_${report.worker_id}`;
+        const key = `${report.report_date}_${report.user_id}`;
         if (dateWorkerMap.has(key)) {
           dateWorkerMap.get(key).reports.push(report);
         } else {
           dateWorkerMap.set(key, {
             date: report.report_date,
-            worker_id: report.worker_id,
+            user_id: report.user_id,
             worker_name: report.worker_name,
             attendance: null,
             reports: [report]