Add Linux App Store Web Portal with Kubernetes deployment

- React-style static web portal with Tailwind CSS
- OS detection (Debian/Ubuntu, Fedora, Arch, Generic)
- Dynamic install commands (apt://, appstream://, flatpak)
- 9 pre-configured applications
- Kubernetes: 2 replicas, LoadBalancer service, Nginx ingress
- GitLab Container Registry (git.giaco.net/capitano/webapplinux)
- Namespace: linuxwebapp
- Added Dockerfile, nginx.conf, deploy.sh, docker-compose.yml
- Updated README.md with deployment instructions

deploy.sh

@@ -0,0 +1,18 @@
+#!/bin/bash
+set -e
+
+REGISTRY="git.giaco.net"
+IMAGE_NAME="capitano/webapplinux"
+TAG="latest"
+
+echo "Building image..."
+docker build -t $REGISTRY/$IMAGE_NAME:$TAG /home/capitano/kubernetes/infrastructure/webapplinux/
+
+echo "Pushing to registry..."
+docker push $REGISTRY/$IMAGE_NAME:$TAG
+
+echo "Deploying to Kubernetes..."
+kubectl apply -f k8s/namespace.yaml 2>/dev/null || true
+kubectl apply -f k8s/
+
+echo "Check status with: kubectl get pods -n linuxwebapp"