chore: تنظیم Nexus برای NuGet و Docker offline

- Dockerfile: استفاده از Nexus Docker (194.5.195.53:32082)
- NuGet.config: استفاده از Nexus NuGet با HTTP و allowInsecureConnections
- workflow: حذف kubectl dependency، اضافه کردن 32082 به insecure-registries
- csproj: تغییر push آدرس به Nexus foursat-nuget-hosted

.gitea/workflows/prod-deploy.yml

@@ -24,7 +24,9 @@ jobs:
       - name: Install dependencies
         run: |
           apk add --no-cache git curl
-          curl -LO "https://dl.k8s.io/release/$(curl -L -s https://dl.k8s.io/release/stable.txt)/bin/linux/amd64/kubectl"
+          # Install kubectl with fixed version
+          KUBECTL_VERSION="v1.31.0"
+          curl -LO "https://dl.k8s.io/release/${KUBECTL_VERSION}/bin/linux/amd64/kubectl"
           chmod +x kubectl
           mv kubectl /usr/local/bin/
 
@@ -33,7 +35,7 @@ jobs:
           mkdir -p /etc/docker
           cat > /etc/docker/daemon.json << 'DAEMON'
           {
-            "insecure-registries": ["194.5.195.53:30080", "gitea-svc:3000"]
+            "insecure-registries": ["194.5.195.53:30080", "194.5.195.53:32082", "gitea-svc:3000"]
           }
           DAEMON
           mkdir -p ~/.docker