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/daily-issue-api.js

@@ -34,8 +34,8 @@ export async function getWorkersByDate(date) {
     if (reports && reports.length > 0) {
       const workerMap = new Map();
       reports.forEach(r => {
-        if (!workerMap.has(r.worker_id)) {
-          workerMap.set(r.worker_id, { worker_id: r.worker_id, worker_name: r.worker_name });
+        if (!workerMap.has(r.user_id)) {
+          workerMap.set(r.user_id, { user_id: r.user_id, worker_name: r.worker_name });
         }
       });
       workers = Array.from(workerMap.values());