refactor(gateway): gateway↔system1 분리 — gateway=문짝, system1-web=독립

gateway에서 system1 프록시 제거, 대시보드+로그인+공유JS만 담당.
system1-web에 /auth/, /ai-api/ 프록시 이관. tkds-web 제거(gateway 흡수).
notification-bell URL tkfb→tkds, system3 로그인 URL tkds/dashboard로 변경.

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

system1-factory/api/config/cors.js

@@ -13,12 +13,14 @@ const logger = require('../utils/logger');
  * 허용된 Origin 목록
  */
 const allowedOrigins = [
-  'https://tkfb.technicalkorea.net',      // Gateway (프로덕션)
+  'https://tkfb.technicalkorea.net',      // System 1 (공장관리)
+  'https://tkds.technicalkorea.net',      // Gateway/Dashboard
   'https://tkreport.technicalkorea.net',   // System 2
   'https://tkqc.technicalkorea.net',       // System 3
   'https://tkuser.technicalkorea.net',     // User Management
   'https://tkpurchase.technicalkorea.net', // Purchase Management
   'https://tksafety.technicalkorea.net',   // Safety Management
+  'https://tksupport.technicalkorea.net',  // Support Management
   'http://localhost:20000',   // 웹 UI (로컬)
   'http://localhost:30080',   // 웹 UI (Docker)
   'http://localhost:3005',    // API 서버