fix: correct CI/CD workflow for single-repo backend structure

Fixed the deploy-preprod.yml workflow to match the actual project structure.

## Problem
The workflow was configured for a monorepo structure (apps/backend/, apps/frontend/)
but the project is actually a single backend repository with all code at the root.
This caused the CI/CD pipeline to fail as it couldn't find files in apps/backend/.

## Changes Made

### Backend Job (backend-build-test)
- Removed `working-directory: ./apps/backend` directive
- Changed `cache-dependency-path` from `apps/backend/package-lock.json` to `package-lock.json`
- Changed artifact upload path from `apps/backend/dist` to `dist`

### Docker Build (backend-docker)
- Changed Dockerfile path from `./apps/backend/Dockerfile` to `./Dockerfile`

### Frontend Jobs Removed
- Deleted `frontend-build-test` job (no frontend in this repo)
- Deleted `frontend-docker` job
- Removed frontend deployment steps from `deploy-preprod` job
- Removed frontend health checks and smoke tests
- Updated deployment notifications to only show backend

### Dependencies
- Updated `deploy-preprod` job to only depend on `backend-docker`
- Removed all references to `frontend-build-test` and `frontend-docker`

## Verification
✅ Local build successful: `npm run build`
✅ All 102 unit tests passing: `npm test`
✅ ESLint validation passes: `npm run lint`
✅ dist/ directory created (3.7MB)
✅ Workflow file validates without errors

This fix ensures the CI/CD pipeline will work correctly with the actual project structure.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

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

.github/workflows/deploy-preprod.yml

@@ -22,10 +22,6 @@ jobs:
     name: Backend - Build & Test
     runs-on: ubuntu-latest
 
-    defaults:
-      run:
-        working-directory: ./apps/backend
-
     steps:
       # Checkout code
       - name: Checkout Code
@@ -37,7 +33,7 @@ jobs:
         with:
           node-version: ${{ env.NODE_VERSION }}
           cache: 'npm'
-          cache-dependency-path: apps/backend/package-lock.json
+          cache-dependency-path: package-lock.json
 
       # Install dependencies
       - name: Install Dependencies
@@ -62,59 +58,9 @@ jobs:
         uses: actions/upload-artifact@v4
         with:
           name: backend-dist
-          path: apps/backend/dist
+          path: dist
           retention-days: 1
 
-  # ============================================================================
-  # JOB 2: Frontend - Build and Test
-  # ============================================================================
-  frontend-build-test:
-    name: Frontend - Build & Test
-    runs-on: ubuntu-latest
-
-    defaults:
-      run:
-        working-directory: ./apps/frontend
-
-    steps:
-      # Checkout code
-      - name: Checkout Code
-        uses: actions/checkout@v4
-
-      # Setup Node.js
-      - name: Set up Node.js ${{ env.NODE_VERSION }}
-        uses: actions/setup-node@v4
-        with:
-          node-version: ${{ env.NODE_VERSION }}
-          cache: 'npm'
-          cache-dependency-path: apps/frontend/package-lock.json
-
-      # Install dependencies
-      - name: Install Dependencies
-        run: npm ci
-
-      # Run linter (warnings allowed, only errors fail the build)
-      - name: Run ESLint
-        run: npm run lint -- --quiet || true
-
-      # Type check (temporarily disabled - too many errors to fix)
-      # - name: TypeScript Type Check
-      #   run: npm run type-check
-
-      # Build frontend
-      - name: Build Frontend
-        run: npm run build
-        env:
-          NEXT_PUBLIC_API_URL: https://api-preprod.xpeditis.com
-          NEXT_PUBLIC_WS_URL: wss://api-preprod.xpeditis.com
-
-      # Upload build artifacts
-      - name: Upload Frontend Build Artifacts
-        uses: actions/upload-artifact@v4
-        with:
-          name: frontend-build
-          path: apps/frontend/.next
-          retention-days: 1
 
   # ============================================================================
   # JOB 3: Backend - Docker Build & Push
@@ -159,7 +105,7 @@ jobs:
         uses: docker/build-push-action@v5
         with:
           context: .
-          file: ./apps/backend/Dockerfile
+          file: ./Dockerfile
           push: true
           tags: ${{ steps.meta.outputs.tags }}
           labels: ${{ steps.meta.outputs.labels }}
@@ -173,64 +119,6 @@ jobs:
         if: always()
         run: docker system prune -af
 
-  # ============================================================================
-  # JOB 4: Frontend - Docker Build & Push
-  # ============================================================================
-  frontend-docker:
-    name: Frontend - Docker Build & Push
-    runs-on: ubuntu-latest
-    needs: [frontend-build-test]
-
-    steps:
-      - name: Checkout Code
-        uses: actions/checkout@v4
-
-      # Setup QEMU for multi-platform builds
-      - name: Set up QEMU
-        uses: docker/setup-qemu-action@v3
-
-      # Setup Docker Buildx
-      - name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-
-      # Login to Scaleway Registry
-      - name: Login to Scaleway Registry
-        uses: docker/login-action@v3
-        with:
-          registry: rg.fr-par.scw.cloud/xpeditis
-          username: nologin
-          password: ${{ secrets.REGISTRY_TOKEN }}
-
-      # Extract metadata for Docker
-      - name: Extract Docker Metadata
-        id: meta
-        uses: docker/metadata-action@v5
-        with:
-          images: ${{ env.FRONTEND_IMAGE }}
-          tags: |
-            type=raw,value=preprod
-            type=sha,prefix=preprod-
-
-      # Build and push Docker image
-      - name: Build and Push Frontend Image
-        uses: docker/build-push-action@v5
-        with:
-          context: .
-          file: ./apps/frontend/Dockerfile
-          push: true
-          tags: ${{ steps.meta.outputs.tags }}
-          labels: ${{ steps.meta.outputs.labels }}
-          cache-from: type=registry,ref=${{ env.FRONTEND_IMAGE }}:buildcache
-          cache-to: type=registry,ref=${{ env.FRONTEND_IMAGE }}:buildcache,mode=max
-          build-args: |
-            NODE_ENV=production
-            NEXT_PUBLIC_API_URL=https://api-preprod.xpeditis.com
-            NEXT_PUBLIC_WS_URL=wss://api-preprod.xpeditis.com
-
-      # Cleanup
-      - name: Docker Cleanup
-        if: always()
-        run: docker system prune -af
 
   # ============================================================================
   # JOB 5: Deploy to PreProd Server (Portainer Webhook)
@@ -238,7 +126,7 @@ jobs:
   deploy-preprod:
     name: Deploy to PreProd Server
     runs-on: ubuntu-latest
-    needs: [backend-docker, frontend-docker]
+    needs: [backend-docker]
 
     steps:
       - name: Checkout Code
@@ -255,16 +143,6 @@ jobs:
       - name: Wait for Backend Deployment
         run: sleep 30
 
-      - name: Trigger Portainer Webhook - Frontend
-        run: |
-          curl -X POST \
-            -H "Content-Type: application/json" \
-            -d '{"service": "frontend", "image": "${{ env.FRONTEND_IMAGE }}:preprod", "timestamp": "'$(date -u +%Y-%m-%dT%H:%M:%SZ)'"}' \
-            ${{ secrets.PORTAINER_WEBHOOK_FRONTEND }}
-
-      - name: Wait for Frontend Deployment
-        run: sleep 30
-
       # Health check
       - name: Health Check - Backend API
         run: |
@@ -289,29 +167,6 @@ jobs:
           echo "❌ Backend API health check failed after $MAX_RETRIES attempts"
           exit 1
 
-      - name: Health Check - Frontend
-        run: |
-          MAX_RETRIES=10
-          RETRY_COUNT=0
-
-          echo "Waiting for frontend to be healthy..."
-
-          while [ $RETRY_COUNT -lt $MAX_RETRIES ]; do
-            HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" https://app-preprod.xpeditis.com || echo "000")
-
-            if [ "$HTTP_CODE" = "200" ]; then
-              echo "✅ Frontend is healthy (HTTP $HTTP_CODE)"
-              exit 0
-            fi
-
-            RETRY_COUNT=$((RETRY_COUNT + 1))
-            echo "⏳ Attempt $RETRY_COUNT/$MAX_RETRIES - Frontend returned HTTP $HTTP_CODE, retrying in 10s..."
-            sleep 10
-          done
-
-          echo "❌ Frontend health check failed after $MAX_RETRIES attempts"
-          exit 1
-
       # Send deployment notification
       - name: Send Deployment Notification
         if: always()
@@ -340,8 +195,7 @@ jobs:
                   \"description\": \"**Branch:** preprod\n**Commit:** [\`$COMMIT_SHORT\`](https://github.com/${{ github.repository }}/commit/$COMMIT_SHA)\n**Author:** $AUTHOR\n**Message:** $COMMIT_MSG\",
                   \"color\": $COLOR,
                   \"fields\": [
-                    {\"name\": \"Backend\", \"value\": \"https://api-preprod.xpeditis.com\", \"inline\": true},
-                    {\"name\": \"Frontend\", \"value\": \"https://app-preprod.xpeditis.com\", \"inline\": true}
+                    {\"name\": \"Backend API\", \"value\": \"https://api-preprod.xpeditis.com\", \"inline\": true}
                   ],
                   \"timestamp\": \"$(date -u +%Y-%m-%dT%H:%M:%SZ)\"
                 }]
@@ -398,25 +252,6 @@ jobs:
           fi
           echo "✅ Rate search endpoint OK (HTTP $HTTP_CODE)"
 
-      # Test Frontend
-      - name: Test Frontend - Homepage
-        run: |
-          HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" https://app-preprod.xpeditis.com)
-          if [ "$HTTP_CODE" != "200" ]; then
-            echo "❌ Frontend homepage failed (HTTP $HTTP_CODE)"
-            exit 1
-          fi
-          echo "✅ Frontend homepage OK"
-
-      - name: Test Frontend - Login Page
-        run: |
-          HTTP_CODE=$(curl -s -o /dev/null -w "%{http_code}" https://app-preprod.xpeditis.com/login)
-          if [ "$HTTP_CODE" != "200" ]; then
-            echo "❌ Frontend login page failed (HTTP $HTTP_CODE)"
-            exit 1
-          fi
-          echo "✅ Frontend login page OK"
-
       # Summary
       - name: Tests Summary
         run: |
@@ -424,6 +259,5 @@ jobs:
           echo "✅ All smoke tests passed successfully!"
           echo "================================================"
           echo "Backend API:  https://api-preprod.xpeditis.com"
-          echo "Frontend App: https://app-preprod.xpeditis.com"
           echo "Swagger Docs: https://api-preprod.xpeditis.com/api/docs"
           echo "================================================"