[INIT-001] Initial project setup with Clean Architecture (feat)

- Implemented Clean Architecture with Domain, Application, Infrastructure, Presentation layers
- Added comprehensive project structure following SOLID principles
- Created Kubernetes deployment with Helm charts (HPA, PDB, NetworkPolicy)
- Configured ArgoCD for automated deployment (production + staging)
- Implemented CI/CD pipeline with GitHub Actions
- Added comprehensive documentation (handbook, architecture, coding standards)
- Configured PostgreSQL, Redis, Celery for backend services
- Created modern landing page with Persian fonts (Vazirmatn)
- Added Docker multi-stage build for production
- Configured development tools (pytest, black, flake8, mypy, isort)
- Added pre-commit hooks for code quality
- Implemented Makefile for common operations

.github/workflows/cd.yml

@@ -0,0 +1,193 @@
+name: CD - Build & Deploy
+
+on:
+  push:
+    branches: [ main ]
+    tags:
+      - 'v*'
+
+env:
+  REGISTRY: ghcr.io
+  IMAGE_NAME: ${{ github.repository }}
+
+jobs:
+  build-and-push:
+    runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      packages: write
+    
+    outputs:
+      image-tag: ${{ steps.meta.outputs.tags }}
+      image-version: ${{ steps.meta.outputs.version }}
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+    
+    - name: Set up Docker Buildx
+      uses: docker/setup-buildx-action@v2
+    
+    - name: Log in to Container Registry
+      uses: docker/login-action@v2
+      with:
+        registry: ${{ env.REGISTRY }}
+        username: ${{ github.actor }}
+        password: ${{ secrets.GITHUB_TOKEN }}
+    
+    - name: Extract metadata
+      id: meta
+      uses: docker/metadata-action@v4
+      with:
+        images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
+        tags: |
+          type=ref,event=branch
+          type=semver,pattern={{version}}
+          type=semver,pattern={{major}}.{{minor}}
+          type=sha,prefix={{branch}}-
+          type=raw,value=latest,enable={{is_default_branch}}
+    
+    - name: Build and push Docker image
+      uses: docker/build-push-action@v4
+      with:
+        context: .
+        push: true
+        tags: ${{ steps.meta.outputs.tags }}
+        labels: ${{ steps.meta.outputs.labels }}
+        cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache
+        cache-to: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:buildcache,mode=max
+        platforms: linux/amd64
+    
+    - name: Image digest
+      run: echo "Image pushed with digest ${{ steps.build.outputs.digest }}"
+
+  package-helm:
+    runs-on: ubuntu-latest
+    needs: build-and-push
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+    
+    - name: Install Helm
+      uses: azure/setup-helm@v3
+      with:
+        version: 'latest'
+    
+    - name: Package Helm chart
+      run: |
+        helm package helm/peikarband --destination .
+        helm repo index . --url https://github.com/${{ github.repository }}/releases/download/${{ github.ref_name }}
+    
+    - name: Upload Helm chart artifact
+      uses: actions/upload-artifact@v3
+      with:
+        name: helm-chart
+        path: |
+          *.tgz
+          index.yaml
+
+  deploy-staging:
+    runs-on: ubuntu-latest
+    needs: [build-and-push, package-helm]
+    if: github.ref == 'refs/heads/main'
+    environment:
+      name: staging
+      url: https://staging.peikarband.ir
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+    
+    - name: Install kubectl
+      uses: azure/setup-kubectl@v3
+    
+    - name: Install Helm
+      uses: azure/setup-helm@v3
+    
+    - name: Configure kubectl
+      run: |
+        echo "${{ secrets.KUBECONFIG_STAGING }}" | base64 -d > kubeconfig
+        export KUBECONFIG=kubeconfig
+    
+    - name: Deploy to Staging
+      run: |
+        export KUBECONFIG=kubeconfig
+        helm upgrade --install peikarband-staging ./helm/peikarband \
+          --namespace staging \
+          --create-namespace \
+          --set image.tag=${{ needs.build-and-push.outputs.image-version }} \
+          --set image.repository=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} \
+          --set ingress.hosts[0].host=staging.peikarband.ir \
+          --wait \
+          --timeout 5m
+
+  deploy-production:
+    runs-on: ubuntu-latest
+    needs: [build-and-push, package-helm]
+    if: startsWith(github.ref, 'refs/tags/v')
+    environment:
+      name: production
+      url: https://peikarband.ir
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+    
+    - name: Install kubectl
+      uses: azure/setup-kubectl@v3
+    
+    - name: Install Helm
+      uses: azure/setup-helm@v3
+    
+    - name: Configure kubectl
+      run: |
+        echo "${{ secrets.KUBECONFIG_PRODUCTION }}" | base64 -d > kubeconfig
+        export KUBECONFIG=kubeconfig
+    
+    - name: Deploy to Production
+      run: |
+        export KUBECONFIG=kubeconfig
+        helm upgrade --install peikarband-prod ./helm/peikarband \
+          --namespace production \
+          --create-namespace \
+          --set image.tag=${{ needs.build-and-push.outputs.image-version }} \
+          --set image.repository=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }} \
+          --set replicaCount=3 \
+          --set autoscaling.enabled=true \
+          --values helm/peikarband/values-production.yaml \
+          --wait \
+          --timeout 10m
+    
+    - name: Verify deployment
+      run: |
+        export KUBECONFIG=kubeconfig
+        kubectl rollout status deployment/peikarband-prod -n production
+        kubectl get pods -n production
+
+  release:
+    runs-on: ubuntu-latest
+    needs: [build-and-push, package-helm, deploy-production]
+    if: startsWith(github.ref, 'refs/tags/v')
+    permissions:
+      contents: write
+    
+    steps:
+    - name: Checkout code
+      uses: actions/checkout@v3
+    
+    - name: Download Helm chart
+      uses: actions/download-artifact@v3
+      with:
+        name: helm-chart
+    
+    - name: Create Release
+      uses: softprops/action-gh-release@v1
+      with:
+        files: |
+          *.tgz
+          index.yaml
+        generate_release_notes: true
+        draft: false
+        prerelease: false
+