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>

tksafety/api/index.js

@@ -5,8 +5,10 @@ const dailyVisitRoutes = require('./routes/dailyVisitRoutes');
 const educationRoutes = require('./routes/educationRoutes');
 const visitRequestRoutes = require('./routes/visitRequestRoutes');
 const checklistRoutes = require('./routes/checklistRoutes');
+const riskRoutes = require('./routes/riskRoutes');
 const dailyVisitModel = require('./models/dailyVisitModel');
 const visitRequestModel = require('./models/visitRequestModel');
+const riskModel = require('./models/riskModel');
 const { requireAuth } = require('./middleware/auth');
 
 const app = express();
@@ -42,6 +44,7 @@ app.use('/api/daily-visits', dailyVisitRoutes);
 app.use('/api/education', educationRoutes);
 app.use('/api/visit-requests', visitRequestRoutes);
 app.use('/api/checklist', checklistRoutes);
+app.use('/api/risk', riskRoutes);
 
 // Partner search (autocomplete)
 app.get('/api/partners/search', requireAuth, async (req, res) => {
@@ -89,6 +92,7 @@ app.listen(PORT, async () => {
   // DB 마이그레이션 실행
   try {
     await visitRequestModel.runMigration();
+    await riskModel.runMigration();
   } catch (err) {
     console.error('Migration error:', err.message);
   }