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/js/admin-settings.js

@@ -794,14 +794,14 @@ document.addEventListener('DOMContentLoaded', () => {
 
 // ========== 작업자 연결 기능 ========== //
 let departments = [];
-let selectedWorkerId = null;
+let selectedUserId = null;
 
 // 연결된 작업자 정보 표시 업데이트
 function updateLinkedWorkerDisplay(user) {
   const linkedWorkerInfo = document.getElementById('linkedWorkerInfo');
   if (!linkedWorkerInfo) return;
 
-  if (user.worker_id && user.worker_name) {
+  if (user.user_id && user.worker_name) {
     linkedWorkerInfo.innerHTML = `
       <span class="worker-badge">
         <span class="worker-name">👤 ${user.worker_name}</span>
@@ -820,7 +820,7 @@ async function openWorkerSelectModal() {
     return;
   }
 
-  selectedWorkerId = currentEditingUser.worker_id || null;
+  selectedUserId = currentEditingUser.user_id || null;
 
   // 부서 목록 로드
   await loadDepartmentsForSelect();
@@ -833,7 +833,7 @@ window.openWorkerSelectModal = openWorkerSelectModal;
 // 작업자 선택 모달 닫기
 function closeWorkerSelectModal() {
   document.getElementById('workerSelectModal').style.display = 'none';
-  selectedWorkerId = null;
+  selectedUserId = null;
 }
 window.closeWorkerSelectModal = closeWorkerSelectModal;
 
@@ -906,18 +906,18 @@ function renderWorkerListForSelect(workers) {
   }
 
   // 이미 다른 계정에 연결된 작업자 확인을 위해 users 배열 사용
-  const linkedWorkerIds = users
-    .filter(u => u.worker_id && u.user_id !== currentEditingUser?.user_id)
-    .map(u => u.worker_id);
+  const linkedUserIds = users
+    .filter(u => u.user_id && u.user_id !== currentEditingUser?.user_id)
+    .map(u => u.user_id);
 
   container.innerHTML = workers.map(worker => {
-    const isSelected = selectedWorkerId === worker.worker_id;
-    const isLinkedToOther = linkedWorkerIds.includes(worker.worker_id);
-    const linkedUser = isLinkedToOther ? users.find(u => u.worker_id === worker.worker_id) : null;
+    const isSelected = selectedUserId === worker.user_id;
+    const isLinkedToOther = linkedUserIds.includes(worker.user_id);
+    const linkedUser = isLinkedToOther ? users.find(u => u.user_id === worker.user_id) : null;
 
     return `
       <div class="worker-select-item ${isSelected ? 'selected' : ''} ${isLinkedToOther ? 'disabled' : ''}"
-           onclick="${isLinkedToOther ? '' : `selectWorker(${worker.worker_id}, '${worker.worker_name}')`}">
+           onclick="${isLinkedToOther ? '' : `selectWorker(${worker.user_id}, '${worker.worker_name}')`}">
         <div class="worker-avatar">${worker.worker_name.charAt(0)}</div>
         <div class="worker-info">
           <div class="worker-name">${worker.worker_name}</div>
@@ -941,8 +941,8 @@ function getJobTypeName(jobType) {
 }
 
 // 작업자 선택
-async function selectWorker(workerId, workerName) {
-  selectedWorkerId = workerId;
+async function selectWorker(userId, workerName) {
+  selectedUserId = userId;
 
   // UI 업데이트
   document.querySelectorAll('.worker-select-item').forEach(item => {
@@ -950,7 +950,7 @@ async function selectWorker(workerId, workerName) {
     item.querySelector('.select-indicator').textContent = '';
   });
 
-  const selectedItem = document.querySelector(`.worker-select-item[onclick*="${workerId}"]`);
+  const selectedItem = document.querySelector(`.worker-select-item[onclick*="${userId}"]`);
   if (selectedItem) {
     selectedItem.classList.add('selected');
     selectedItem.querySelector('.select-indicator').textContent = '✓';
@@ -959,12 +959,12 @@ async function selectWorker(workerId, workerName) {
   // 서버에 저장
   try {
     const response = await window.apiCall(`/users/${currentEditingUser.user_id}`, 'PUT', {
-      worker_id: workerId
+      user_id: userId
     });
 
     if (response.success) {
       // currentEditingUser 업데이트
-      currentEditingUser.worker_id = workerId;
+      currentEditingUser.user_id = userId;
       currentEditingUser.worker_name = workerName;
 
       // 부서 정보도 업데이트
@@ -1003,7 +1003,7 @@ async function unlinkWorker() {
     return;
   }
 
-  if (!currentEditingUser.worker_id) {
+  if (!currentEditingUser.user_id) {
     showToast('연결된 작업자가 없습니다.', 'warning');
     closeWorkerSelectModal();
     return;
@@ -1015,19 +1015,19 @@ async function unlinkWorker() {
 
   try {
     const response = await window.apiCall(`/users/${currentEditingUser.user_id}`, 'PUT', {
-      worker_id: null
+      user_id: null
     });
 
     if (response.success) {
       // currentEditingUser 업데이트
-      currentEditingUser.worker_id = null;
+      currentEditingUser.user_id = null;
       currentEditingUser.worker_name = null;
       currentEditingUser.department_name = null;
 
       // users 배열 업데이트
       const userIndex = users.findIndex(u => u.user_id === currentEditingUser.user_id);
       if (userIndex !== -1) {
-        users[userIndex] = { ...users[userIndex], worker_id: null, worker_name: null, department_name: null };
+        users[userIndex] = { ...users[userIndex], user_id: null, worker_name: null, department_name: null };
       }
 
       // 표시 업데이트