feat(tksafety): 위험성평가 모듈 Phase 1 구현 — DB·API·Excel·프론트엔드

5개 테이블(risk_projects/processes/items/mitigations/templates) + 마스터 시딩,
프로젝트·항목·감소대책 CRUD API, ExcelJS 평가표 내보내기,
프로젝트 목록·평가 수행 페이지, 사진 업로드(multer), 네비게이션·CSS 추가.

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

docker-compose.yml

@@ -354,6 +354,8 @@ services:
       - DB_NAME=${MYSQL_DATABASE:-hyungi}
       - SSO_JWT_SECRET=${SSO_JWT_SECRET}
       - INTERNAL_SERVICE_KEY=${INTERNAL_SERVICE_KEY}
+    volumes:
+      - tksafety_uploads:/usr/src/app/uploads
     depends_on:
       mariadb:
         condition: service_healthy
@@ -368,6 +370,8 @@ services:
     restart: unless-stopped
     ports:
       - "30580:80"
+    volumes:
+      - tksafety_uploads:/usr/share/nginx/html/uploads
     depends_on:
       - tksafety-api
     networks:
@@ -488,6 +492,7 @@ volumes:
   system1_logs:
   system2_uploads:
   system2_logs:
+  tksafety_uploads:
   system3_uploads:
     external: true
     name: tkqc-package_uploads